EN： This sentence uses a mixed conditional structure (specifically, past condition with a present result). The 'if' clause uses the past perfect tense ('had saved') to refer to an unreal past situation, while the main clause uses 'would + base verb' ('would have') to describe the hypothetical present result.
中文： 此句使用了「混合條件句」（具體而言，是過去假設影響現在結果的句型）。「if 引導的條件子句」使用過去完成式（had saved）來表示與過去事實相反的假設，而「主句」則使用「would + 原形動詞」（would have）來描述該假設在現在所產生的虛擬結果。
If he had taken the map, he would not be lost now.
如果他當時有帶地圖，他現在就不會迷路了。
EN： The use of 'enough' as a pronoun. In this context, 'enough' functions as a pronoun meaning 'sufficient water', avoiding repetition of the noun 'water'.
中文： 代名詞「enough」的用法。在此語境中，「enough」作為代名詞，意思是「足夠的水」，用以避免重複提及名詞「water」。
We don't need to buy more bread; we have enough.
我們不需要買更多麵包；我們已經有足夠的了。
EN： In modern environmental discourse, mixed conditionals are frequently used to express regret about past ecological inaction and its ongoing consequences in the present. It highlights a growing global awareness of sustainability and resource conservation.
中文： 在現代環保議題的討論中，混合條件句常用於對過去未能採取環保行動表示遺憾，並指出該行為對現在造成的持續性後果。這反映了全球對於永續發展和資源保育日益增強的意識。
EN： The verb 'wish' followed by the past perfect tense (had + past participle) is used to express regret about a past situation. It indicates a desire for a past event to have been different, which is an unreal or counterfactual past condition.
中文： 動詞「wish」（希望/但願）後面接過去完成式（had + 過去分詞），用於表達對過去事情的遺憾。這表示希望過去的某個狀況在當時有所不同，屬於與過去事實相反的假設語氣。
I wish I had taken that job offer last year.
我真希望我去年有接受那份工作機會。
EN： The word 'coding' is a gerund (verb + -ing) functioning as the direct object of the verb 'studied'. It refers to the activity of writing computer programs.
中文： 單字「coding」是動名詞（動詞 + -ing），在此句中擔任動詞「studied」的直接受詞，指的是編寫電腦程式（程式設計）的活動。
EN： In modern tech-driven societies, 'coding' has transitioned from a niche academic skill to a highly valued general literacy. Expressing regret about not learning to code earlier is a very common sentiment among professionals in various fields who now realize its utility in automation and data analysis.
中文： 在現代科技主導的社會中，「程式設計」（coding）已從少數人的專業技能轉變為極具價值的通用素養。在各行各業的專業人士中，意識到程式設計在自動化和數據分析中的實用性後，對於「沒有早點學程式」感到遺憾是非常普遍的社會現象。
EN： The phrase 'If only' is used to express a strong wish or regret. When referring to a hypothetical or counterfactual situation in the present, it is followed by the past subjunctive (e.g., 'were' instead of 'are').
中文： 「If only」（要是……該有多好）用於表達強烈的願望或遺憾。當表示與現在事實相反的假設時，後面須接虛擬語氣過去式（例如使用 'were' 而非 'are'）。
If only I were taller, I could reach the top shelf.
要是我再高一點，就能夠到最上面的架子了。
EN： Mixed or second conditional structure: 'If only + past subjunctive, subject + could/would + base verb'. This structure is used to discuss hypothetical present situations and their potential outcomes.
中文： 第二類條件句結構：「If only + 過去式虛擬動詞，主詞 + could/would + 原形動詞」。此結構用於討論與現在事實相反的假設情境及其可能產生的結果。
If only we had a map, we could find the way.
要是我們有地圖，就能找到路了。
EN： The conjunction 'as if' (or 'as though') is used to describe a situation that may not be true or is contrary to fact. When expressing an imaginary or untrue situation in the present, we use the past subjunctive (simple past tense) in the 'as if' clause.
中文： 連接詞「as if」（或 as though）用於描述可能不真實或與事實相反的情況。當表示與現在事實相反的虛擬/想像情況時，「as if」引導的從屬子句中須使用過去式虛擬語氣（即動詞過去式）。
She talks as if she owned the company.
她說話的語氣好像整間公司是她開的一樣。
EN： The simple present tense 'acts' in the main clause establishes the time of the action. Even though the main verb is in the present, the following 'as if' clause uses the past tense 'knew' to indicate a hypothetical state occurring at the same time.
中文： 主句中的現在簡單式動詞「acts」確立了動作的時間點。儘管主句動詞為現在式，後續的「as if」子句仍使用過去式動詞「knew」來表示與現在時間點同時發生的假設狀態。
He behaves as if he were a king.
他的舉止就像他是一位國王一樣。
EN： The subjunctive structure 'It is high time + subject + past simple verb' is used to express that something should have been done already, conveying a sense of urgency or mild criticism.
中文： 虛擬語氣結構「It is high time + 主詞 + 過去式動詞」用於表示某事早就該做了，帶有緊迫感或輕微的責備意味。
It is high time we started the meeting.
我們早就該開始開會了。
EN： The phrasal verb 'clean up' means to make a place completely clean and tidy, often used in environmental contexts.
中文： 片語動詞「clean up」意為徹底清理或收拾乾淨，常用於環保相關情境中。
They volunteered to clean up the local park.
他們自願去清理當地的公園。
EN： Environmental protection, especially ocean conservation and reducing plastic waste, is a highly discussed global topic. The phrase 'It is high time' reflects a growing sense of urgency among activists and the general public regarding climate action.
中文： 環境保護（特別是海洋保育與減少塑料垃圾）是全球高度關注的議題。使用「It is high time」這個句型，反映了環保人士及社會大眾對於氣候行動日益迫切的危機感。
EN： This sentence uses an inverted conditional structure (also known as 'Had I known' structure) where 'if' is omitted and the auxiliary verb 'had' is placed before the subject. This is a formal way to express a past unreal condition (Third Conditional).
中文： 此句使用了倒裝條件句結構（亦稱為「Had I known」結構），省略了連接詞「if」，並將助動詞「had」提至主詞之前。這是一種表達過去非事實假設（第三類條件句）的正式書面用法。
Had we known about the traffic, we would have taken the train.
要是我們當時知道路況，我們就會搭火車了。
EN： This is a mixed conditional sentence. The condition ('Had they planned better') refers to the past, while the result ('the trip would succeed') refers to a general or present state of success, though in a standard third conditional it would be 'would have succeeded' to refer to a past result.
中文： 這是一個混合條件句。條件部分（「Had they planned better」）指的是過去，而結果部分（「the trip would succeed」）則常指現在或一般性的結果。若要表達過去已完成的結果，標準第三類條件句會使用「would have succeeded」。
If you had taken my advice, you would be rich now.
如果你當時聽了我的建議，你現在就很有錢了。
EN： In English, using inversion (starting with 'Had they...') instead of 'If they had...' elevates the register of the sentence, making it sound more formal, literary, or dramatic. It is commonly used in written English, speeches, or formal debates.
中文： 在英文中，使用倒裝句（以「Had they...」開頭）而非標準的「If they had...」會提升句子的語體層次，使其聽起來更正式、具文學感或戲劇張力。這種用法常見於書面英文、演講或正式辯論中。
EN： Second Conditional (Hypothetical Present/Future): Used to talk about imaginary, unlikely, or impossible situations in the present or future. The structure is 'If + subject + past simple (were for all subjects), subject + would + base verb'.
中文： 與現在事實相反的假設（第二類條件句）：用於描述在現在或未來想像、不太可能發生或不可能發生的情況。結構為「If + 主詞 + 過去式動詞（不論主詞人稱一律用 were），主詞 + would + 原形動詞」。
If I were a scientist, I would study clean energy first.
如果我是科學家，我會先研究乾淨能源。
EN： The subjunctive 'were' with 'I': In formal English and conditional sentences, 'were' is used instead of 'was' after 'I', 'he', 'she', or 'it' to indicate that the situation is hypothetical.
中文： 主詞 I 搭配虛擬語氣 were：在正式英文與條件句中，在 I、he、she 或 it 之後使用 were 而非 was，用以表示該情況為假設、非真實的。
If she were here, she would know what to do.
如果她在這裡，她就會知道該怎麼做。
EN： In English-speaking professional environments, giving direct advice can sometimes sound too bossy. Using the phrase 'If I were you, I would...' is a polite, indirect way to offer a strong recommendation or alternative solution without sounding demanding.
中文： 在英語系國家的職場環境中，直接給予建議有時會顯得過於強勢。使用「If I were you, I would...（如果我是你，我會……）」是一種禮貌且委婉的方式，既能提出強烈的建議或替代方案，又不會顯得頤指氣使。
EN： The verb 'wish' is used with a past tense verb (subjunctive mood) to express a desire for a situation in the present or future that is contrary to reality or unlikely to happen.
中文： 動詞「wish」（希望）後面接過去式動詞（虛擬語氣），用來表示對現在或未來與事實相反、或實現可能性極低的願望。
I wish I had a car.
我希望我有一輛車（但實際上現在沒有）。
EN： The term 'clean energy' refers to renewable energy sources that do not pollute the atmosphere when used, such as solar or wind power.
中文： 「clean energy」（清潔能源）是指在使用時不會污染大氣的再生能源，例如太陽能或風力發電。
EN： In modern urban planning and environmental discussions, the transition to 'clean energy' (like solar, wind, or hydro power) is a major topic of public interest, reflecting a growing global awareness of climate change.
中文： 在現代都市規劃與環保議題中，轉型使用「清潔能源」（如太陽能、風能或水力發電）是公眾關注的焦點，這反映了全球對氣候變遷日益增長的關注。
EN： This sentence uses a mixed conditional (Type 3 + Type 2). The 'if' clause uses the past perfect tense ('had missed') to describe an unreal past condition, while the main clause uses 'would' + base verb ('would be') to describe the present result of that hypothetical past event.
中文： 此句使用了混合條件句（第三類 + 第二類）。「if」引導的從句使用過去完成式（had missed）來描述與過去事實相反的假設，而主句則使用「would」+ 原形動詞（would be）來描述該假設對現在所產生的結果。
If I had won the lottery yesterday, I would be rich now.
如果我昨天中了彩券，我現在就是個富翁了。
EN： The verb 'miss' in this context means to avoid hitting, reaching, or contacting something. It describes the storm passing by without causing harm to the speakers.
中文： 在此語境中，動詞「miss」表示避開、未擊中或未波及。它描述了暴風雨與說話者擦身而過，沒有造成傷害。
The bullet missed the target by a few inches.
子彈偏離目標幾英吋，沒有擊中。
EN： The conjunction 'as if' (or 'as though') is used to describe a situation that may not be true, but is being compared to reality. When referring to a past event or an imaginary past situation, we use the past perfect tense (had + past participle) after 'as if'.
中文： 連接詞「as if」（或 as though）用於描述一個可能並非真實，但被拿來與現實作比較的情況。當指涉過去發生的事件或想像中的過去狀況時，「as if」後面會使用過去完成式（had + 過去分詞）。
He looks as if he had seen a ghost.
他看起來就像是見了鬼似的。
EN： The use of the past perfect 'had seen' after 'as if' indicates a counterfactual or hypothetical situation in the past relative to the time of speaking. It emphasizes that she did not actually see the future, but her behavior suggests she did.
中文： 在「as if」之後使用過去完成式「had seen」，表示相對於說話當下，過去一個與事實相反或假設性的狀況。這強調了她實際上並沒有看見未來，但她的行為舉止卻顯得她好像看見了一樣。
She spoke as if she had known the secret all along.
她說話的語氣彷彿她早就知道這個秘密似的。
EN： The phrase 'If only' is used to express a strong wish or regret. When referring to a present or future situation that is hypothetical or unlikely, we use the past simple tense (subjunctive mood) after 'If only'.
中文： 「If only」（要是……該有多好）用於表達強烈的願望或遺憾。當用來表示與現在或未來事實相反的假設情況時，後面接過去簡單式（虛擬語氣）。
If only I had a car, I could drive to work.
要是我有車，我就可以開車去上班了。
EN： In conditional sentences expressing hypothetical situations (second conditional), the main clause uses modal verbs like 'could', 'would', or 'might' followed by the base verb to indicate potential outcomes.
中文： 在表示與現在事實相反的假設條件句（第二類條件句）中，主句使用情態助動詞（如 could、would 或 might）加上原型動詞，用來表示可能發生的結果。
If we had enough money, we could buy that house.
如果我們有足夠的錢，我們就能買下那棟房子。
EN： In professional and academic settings, expressing hypothetical scenarios using 'If only' or 'could' is a polite way to suggest improvements or acknowledge limitations without sounding overly critical or demanding.
中文： 在職場或學術環境中，使用「If only」或「could」來表達假設情境，是一種禮貌的建議方式。這能指出改進空間或承認局限性，而不會顯得過於苛刻或強求。
EN： The subjunctive construction 'It is time + subject + past tense verb' is used to express that something should be done now, and is often overdue. Although the verb is in the past tense (e.g., 'took'), it refers to a present or future action.
中文： 虛擬語氣句型「It is time + 主詞 + 過去式動詞」用來表示某事現在該做，且往往有「早就該做而拖延至今」的含意。雖然動詞使用過去式（例如 'took'），但實際上指的是現在或未來的行動。
It is time we went home.
我們該回家了。
EN： The phrase 'take [something] seriously' means to treat a matter with the respect, attention, or concern it deserves, rather than dismissing it lightly.
中文： 片語「take [something] seriously」意為「認真對待某事」，指給予某個議題應有的尊重、關注或重視，而非輕率對待。
You should take his advice seriously.
你應該認真對待他的建議。
EN： Climate change is a highly discussed global issue. Using the subjunctive 'It is time...' reflects a growing sense of urgency and collective responsibility in English-speaking societies regarding environmental action.
中文： 氣候變遷是全球高度關注的議題。使用虛擬語氣「It is time...」反映了英語系國家社會對於環境保護行動日益增長的緊迫感與集體責任感。
EN： The verb 'imagine' can be followed by a noun clause starting with a question word (here, 'how different') acting as its direct object. This is known as an indirect question, which follows statement word order (subject + verb) rather than question word order.
中文： 動詞「imagine」（想像）後面可以接由疑問詞（此處為「how different」）引導的名詞子句作為直接受詞。這被稱為間接問句，其語序須使用陳述句語序（主詞 + 動詞），而非疑問句語序。
She wonders how successful the project will be.
她想知道這個企劃會有多成功。
EN： The modal verb 'could' is used here to express possibility or potential in a hypothetical or reflective scenario, indicating how the world has the potential to be different.
中文： 情態動詞「could」在此處用於表達假設或反思情境中的可能性或潛力，指出世界有變得不同的潛力。
EN： This sentence uses a mixed conditional structure (Type 3 + Type 2). The 'if' clause refers to an unreal past condition ('had acted', past perfect), while the main clause refers to an unreal present result ('would be', would + base verb) with the time marker 'now'.
中文： 此句使用了「混合條件句」（第三類 + 第二類）。if 引導的從屬子句表示與過去事實相反的假設（使用過去完成式 had acted），而主要子句則表示該假設對現在造成的影響或結果（使用 would + 原形動詞 would be），並帶有時間副詞 now（現在）。
If he had taken the map, he would not be lost now.
如果他當時有帶地圖，他現在就不會迷路了。
EN： The comparative adverb 'sooner' is the comparative form of 'soon', meaning 'at an earlier time' or 'more quickly'. It is used here to modify the verb 'acted' to indicate a more timely intervention.
中文： 比較級副詞 'sooner' 是 'soon'（很快、及早）的比較級形式，意思是「更早」或「更迅速」。在此處用來修飾動詞 'acted'，表示比實際行動的時間還要更早採取行動。
The doctor advised her to start the treatment sooner.
醫生建議她儘早開始治療。
EN： This sentence reflects the global urgency and collective responsibility regarding climate change. The use of 'we' emphasizes shared human responsibility rather than pointing fingers at specific individuals or nations.
中文： 這句話反映了全球對於氣候變遷的緊迫感與共同責任。句中「我們 (we)」的使用，強調了全人類應共同承擔的責任，而非將責任歸咎於特定個人或國家。
EN： The verb 'wish' is followed by a clause in the subjunctive mood (past tense) to express a desire for a situation in the present or future that is contrary to reality or unlikely to happen. Here, 'understood' (simple past) is used to show that currently, not enough people understand this power.
中文： 動詞「wish」（希望/但願）後面接的子句須使用虛擬語氣（過去式），用來表示與現在或未來事實相反、或難以實現的願望。在此處，使用過去式動詞「understood」表示目前實際上理解這種力量的人還不夠多。
I wish I knew how to solve this problem.
但願我知道該如何解決這個問題。
EN： The noun phrase 'the power of small habits' uses the preposition 'of' to show possession or association, linking the abstract noun 'power' with its source 'small habits'.
中文： 名詞片語「the power of small habits」利用介係詞「of」來表示所有關係或關聯，將抽象名詞「power」（力量）與其來源「small habits」（微小的習慣）連結起來。
We must never underestimate the power of teamwork.
我們絕不能低估團隊合作的力量。
EN： The phrase 'If only' is used to express a strong wish or regret. When referring to a hypothetical present situation (contrary to present reality), it is followed by the past simple tense (e.g., 'used').
中文： 「If only」（要是……該有多好）用於表達強烈的願望或遺憾。當用來表示與現在事實相反的假設情況時，後面須接過去簡單動詞（例如本句中的 'used'）。
If only I had more free time, I would travel the world.
要是我的空閒時間多一點，我就會去環遊世界。
EN： This sentence uses a mixed or second conditional structure ('If only... used..., we would save...'). The past tense in the 'if' clause and 'would + base verb' in the main clause describe an imaginary or unlikely situation in the present.
中文： 本句採用了第二類條件句結構（'If only... used..., we would save...'）。條件子句使用過去式動詞，主句使用「would + 原形動詞」，用來描述與現在事實相反或極不可能發生的假設情境。
If we lived closer to the office, we would walk to work.
如果我們住得離辦公室近一點，我們就會走路去上班。
EN： In modern environmental discourse, the transition to renewable energy sources like solar power is a major topic. The use of 'If only' reflects a common public sentiment of urgency and slight frustration regarding the slow pace of global green energy adoption.
中文： 在現代環保論述中，向太陽能等再生能源轉型是一個重大議題。句中「If only」的使用，反映了社會大眾對於全球綠色能源普及速度較慢，所產生的一種迫切與些許無奈的普遍社會心聲。
EN： The conjunction 'as if' (or 'as though') is used to describe a situation that is not true or real, but is imagined. When expressing an unreal or hypothetical present situation, the past subjunctive (using 'were' for all subjects) is used.
中文： 連接詞「as if」（或 as though）用於描述一個並非真實存在，而是想像出來的情境。當用來表達與現在事實相反的假設時，會使用過去式虛擬語氣（不論主詞為何，Be 動詞皆使用「were」）。
He acts as if he were the boss of this company.
他的言行舉止就好像他是這家公司的老闆一樣（事實上他不是）。
EN： The adverb 'sometimes' is a frequency adverb meaning 'occasionally'. It can be placed at the beginning of a sentence, before the main verb, or at the end of a sentence to add emphasis or variety to sentence structure.
中文： 副詞「sometimes」是頻率副詞，意思是「有時候」。它可以放在句首、主動詞之前或句尾，用來加強語氣或使句型產生變化。
Sometimes we need to take a break to recharge.
有時候我們需要休息一下來重新充電。
EN： This sentence uses a mixed conditional structure. The condition ('Had we invested...') refers to an unreal past action (Third Conditional), while the result ('...many problems would be solved') refers to an ongoing or present state (Second Conditional). It shows how a past action or lack thereof affects the present.
中文： 此句使用了「混合條件句」（Mixed Conditional）。條件子句（Had we invested...）表示與過去事實相反的假設（第三類條件句），而結果子句（...many problems would be solved）則表示對現在狀況的影響（第二類條件句）。這用來表達過去的行為或不作為如何影響現在的局勢。
If I had taken that job, I would be living in Tokyo now.
如果我當時接受了那份工作，我現在就會住在東京了。
EN： In formal English, the conjunction 'if' can be omitted in conditional clauses containing 'had', 'were', or 'should'. When 'if' is omitted, subject-auxiliary inversion occurs. Thus, 'If we had invested' becomes 'Had we invested'.
中文： 在正式英文中，若條件子句中含有助動詞 had、were 或 should，可以省略連接詞 if。省略 if 時，主詞與助動詞必須倒裝。因此，「If we had invested」會變成「Had we invested」。
Had they arrived earlier, they would have caught the train.
要是他們早點到，就能趕上火車了。
EN： Second Conditional (Hypothetical Present/Future): Used to talk about imaginary, unlikely, or impossible situations in the present or future. The structure is 'If + subject + past simple (were for all subjects), subject + would + base verb'.
中文： 與現在事實相反的假設（第二類條件句）：用於描述在現在或未來想像、不太可能發生或不可能發生的情況。結構為「If + 主詞 + 過去式動詞（不論主詞人稱一律可用 were），主詞 + would + 原形動詞」。
If I were you, I would accept the job offer.
如果我是你，我就會接受那份工作錄取通知。
EN： The use of 'were' instead of 'was' in conditional clauses (subjunctive mood) is the standard formal usage for all grammatical persons when expressing hypothetical situations.
中文： 在條件子句中（虛擬語氣），不論主詞是第幾人稱，使用「were」而非「was」是表達假設情況時的標準正式用法。
EN： In modern environmental discourse, 'clean energy' (such as solar and wind power) is a highly discussed topic globally. Expressing personal aspirations to contribute to scientific solutions reflects a common contemporary value of environmental responsibility.
中文： 在現代環境議題的討論中，「乾淨能源」（如太陽能和風力發電）是全球高度關注的焦點。表達自己希望為科學解決方案做出貢獻，反映了當代社會對於環境保護責任的共同價值觀。
EN： The subjunctive structure 'It is high time + subject + past tense verb' is used to express that something should have been done already, and there is a strong sense of urgency or mild criticism. Even though the past tense is used, the meaning refers to the present or immediate future.
中文： 虛擬語氣結構「It is high time + 主詞 + 過去式動詞」用於表示某事早就該做而未做，帶有強烈的緊迫感或輕微的責備意味。雖然動詞使用過去式，但表達的是現在或即將到來的時間點。
It is high time we started working on the project.
我們早就該開始著手進行這個專案了。
EN： The verb 'treat' is used with the preposition 'with' to describe the manner or attitude with which someone or something is handled (e.g., 'treat with care', 'treat with respect').
中文： 動詞「treat」（對待）常與介係詞「with」連用，用來描述對待某人或某事物的態度或方式（例如：以關懷對待、以尊重對待）。
You should treat others with kindness.
你應該以善良的態度對待他人。
EN： The phrase 'It is high time' is a common idiomatic expression in English-speaking countries used in advocacy, environmentalism, and social movements to rally people around an urgent cause, emphasizing that action is overdue.
中文： 「It is high time」是英語國家中非常常見的慣用語，常用於倡議、環保運動和社會運動中，用來號召人們關注緊迫的議題，強調採取行動的時間早就該到了。
EN： The verb 'wish' followed by a clause in the simple past tense ('taught') is used to express a regret or a desire for a present or future situation to be different from reality. This is a form of the subjunctive mood.
中文： 動詞 'wish' 後面接過去簡單式子句（如 'taught'），用於表達對現在或未來狀況與事實相反的願望或遺憾。這是一種虛擬語氣的用法。
I wish I had more free time to travel.
我希望我有更多空閒時間去旅行。
EN： The infinitive structure 'teach someone to do something' is used to show the action that is being instructed. In this sentence, 'to' is followed by two coordinated verbs: 'question' and 'explore'.
中文： 不定詞結構 'teach someone to do something'（教導某人做某事）用於表示所教授的動作。在本句中，'to' 後面接了兩個對等的動詞：'question'（質疑）與 'explore'（探索）。
My parents taught me to respect others.
我父母教導我要尊重他人。
EN： This sentence reflects a modern educational philosophy in Western cultures, which highly values critical thinking and active inquiry over rote memorization. Encouraging students to 'question' authority or established facts is seen as a key component of intellectual growth.
中文： 這句話反映了西方文化中現代教育哲學的觀點，即高度重視「批判性思考」與「主動探究」，而非死記硬背。鼓勵學生去「質疑」權威或既定事實，被視為智力成長的關鍵要素。
EN： The phrase 'If only' is used to express a strong wish or regret. When referring to a hypothetical or unlikely present situation, it is followed by the past simple tense (subjunctive mood).
中文： 「If only」用於表達強烈的願望或遺憾。當用來表示與現在事實相反或極不可能發生的假設情況時，後面須接過去簡單式（虛擬語氣）。
If only I had more free time, I would travel the world.
要是我有更多空閒時間，我 就會去環遊世界。
EN： The second conditional structure ('If... past simple, ... would + base verb') is used to talk about imaginary or hypothetical situations in the present or future and their unreal results.
中文： 第二類條件句結構（If + 過去簡單式，... would + 原形動詞）用於描述在現在或未來想像、假設的情況，以及其非真實的結果。
If they started earlier, they would finish on time.
如果他們早點開始，他們就會準時完成。
EN： Inversion in conditional sentences (Conditional Inversion) is used to make the sentence more formal. When 'if' is omitted in a third conditional clause (past unreal), the auxiliary verb 'had' is placed before the subject.
中文： 條件句中的倒裝（Conditional Inversion）用於使句子更為正式。當省略虛擬語氣條件句（與過去事實相反）中的 'if' 時，助動詞 'had' 必須提至主詞之前。
Had I known about the meeting, I would have attended.
要是我早知道有這場會議，我一定會出席。
EN： Mixed conditional sentences are used to express a hypothetical past condition and its present result. Here, 'Had each of us done...' refers to a past action, while 'the world would change' refers to a general or present result.
中文： 混合條件句（Mixed Conditionals）用於表示假設的過去狀況對現在造成的影響。在此句中，「Had each of us done...」指的是過去未發生的動作，而「the world would change」則指現在或常態性的結果。
Had we taken the map, we would not be lost now.
要是我們當時帶了地圖，現在就不會迷路了。
EN： The subjunctive structure 'It is time + subject + past simple verb' is used to express that something should have been done already, or that it is high time to do it. Although the verb is in the past tense (e.g., 'turned'), it refers to a present or future action.
中文： 虛擬語氣結構「It is time + 主詞 + 過去式動詞」用於表示某事早就該做了，或是現在正是做這件事的時候。雖然動詞使用過去式（例如 'turned'），但其指涉的是現在或未來的行動。
It is time we started working on the project.
是時候我們該開始著手進行這個專案了。
EN： The phrasal verb 'turn A into B' means to transform or change something from one state, form, or substance into another.
中文： 片語動詞「turn A into B」意為將某事物從一種狀態、形式或物質轉化或改變為另一種。
She turned her hobby into a successful business.
她將自己的興趣轉化為一門成功的事業。
EN： The use of 'would' in this question is part of a hypothetical conditional structure (second conditional). It is used to ask about an imaginary or unlikely situation in the present or future, rather than a real plan.
中文： 在此問句中，'would' 的使用屬於假設語氣（第二類條件句）。它用來詢問在現在或未來想像中、或不太可能發生的虛擬情況，而非實際的計畫。
What would you do if you won the lottery?
如果你中樂透，你會做什麼？
EN： A vocative comma is used to set off the name of the person being directly addressed ('Emma') at the end of the sentence. This helps clarify that the speaker is talking directly to that person.
中文： 呼格逗號（vocative comma）用於將句子末尾直接稱呼的人名（「艾瑪」）隔開。這有助於明確表示說話者正在直接對該對象說話。
How are you feeling, John?
你感覺怎麼樣，約翰？
EN： In English-speaking cultures, addressing someone by their first name (like 'Emma') at the end of a question is a common way to make the conversation feel more personal, warm, and direct. It invites the specific person to share their thoughts in a friendly manner.
中文： 在英語系國家中，在問句末尾直接稱呼對方的名字（如「艾瑪」）是一種常見的社交方式，能讓對話顯得更具個人色彩、溫暖且直接。這能友好地邀請該特定對象分享他們的想法。
EN： Second Conditional (Hypothetical Present/Future): Used to talk about imaginary, unlikely, or impossible situations in the present or future. The structure is 'If + Subject + Past Simple, Subject + would + base verb'.
中文： 第二類條件句（與現在/未來事實相反的假設）：用於描述在現在或未來想像、不太可能發生或不可能發生的情況。句型結構為「If + 主詞 + 過去簡單動詞，主詞 + would + 原形動詞」。
If I had more time, I would learn how to play the piano.
如果我有更多時間，我就會去學彈鋼琴。
EN： The use of 'would' for hypothetical results: 'Would' is a modal verb used here to express the imagined result of an unreal condition.
中文： 使用助動詞「would」表示假設結果：「would」在此作為情態助動詞，用來表達虛擬條件下所產生的想像結果。
EN： In modern discourse, 'clean energy' (such as solar and wind power) is a highly discussed topic globally. Expressing hypothetical scenarios using the second conditional is a common way for speakers to share their vision or ideals for a better society without sounding overly demanding.
中文： 在現代社會議題中，「乾淨能源」（如太陽能和風力發電）是全球高度討論的話題。使用第二類條件句（虛擬語氣）來表達假設情境，是說話者分享對美好社會願景或理想的常用方式，聽起來既有建設性又不會顯得過於強求。
EN： The verb 'wish' followed by the past perfect tense (had + past participle) is used to express regret about a past situation. It indicates a desire for a past event to have happened differently, though it cannot be changed now.
中文： 動詞「wish」後面接過去完成式（had + 過去分詞），用於表達對過去事情的遺憾。這表示希望過去的某個狀況能有所不同，但實際上已無法改變。
I wish I had bought that book yesterday.
我真希望我昨天有買那本書。
EN： The word 'sooner' is the comparative form of the adverb 'soon'. In this context, it means 'at an earlier time' or 'more quickly' than what actually occurred.
中文： 單字「sooner」是副詞「soon」的比較級。在此語境中，它表示比實際發生的時間「更早」或「更快」。
If we leave sooner, we can avoid the traffic.
如果我們早點出發，就能避開塞車。
EN： In English-speaking cultures, expressing regret with 'I wish I had...' is a common way to show self-reflection and humility. It is often used in professional or academic settings to discuss lessons learned and how to improve future planning without sounding overly defensive.
中文： 在英語系國家中，使用「I wish I had...」來表達遺憾是一種常見的自我反省與展現謙遜的方式。在職場或學術環境中，這常用於討論吸取的教訓以及如何改善未來的規劃，而不會顯得過於防衛或推卸責任。
EN： The structure 'If only + Subject + Past Simple' is used to express a strong wish or regret about a present situation. It indicates that the current situation is different from what we want it to be (subjunctive mood).
中文： 「If only + 主詞 + 過去簡單式」的結構用於表達對現狀的強烈願望或遺憾。它表示目前的實際情況與我們所期望的不同（虛擬語氣）。
If only I had more free time, I would travel the world.
要是我有更多空閒時間就好了，我就能去環遊世界。
EN： The modal verb 'could' is used in the main clause of a conditional sentence (second conditional) to express hypothetical ability or possibility in the present or future.
中文： 助動詞「could」用於條件句（與現在事實相反的假設）的主句中，用來表示在現在或未來假設情況下的能力或可能性。
If we lived closer, we could meet up more often.
如果我們住得近一點，我們就能更常碰面。
EN： The conjunction 'as if' (or 'as though') is used to describe a hypothetical or unreal situation. When referring to an unlikely or contrary-to-fact present situation, we use the subjunctive past tense (e.g., 'were' instead of 'is/was').
中文： 連接詞「as if」（或 as though）用於描述假設或與事實不符的情況。當指代與現在事實相反或極不可能發生的情況時，後面子句須使用虛擬語氣過去式（例如用「were」代替「is/was」）。
She talks as if she knew the secret.
她說話的樣子好像她知道這個秘密一樣（事實上她不知道）。
EN： In subjunctive mood clauses following 'as if' or 'if', 'were' is traditionally used for all subjects (I, you, he, she, it, they) instead of 'was' to emphasize the hypothetical nature of the statement.
中文： 在「as if」或「if」引導的虛擬語氣子句中，傳統語法上不論主詞是第幾人稱（我、你、他、她、它、他們），均使用「were」而非「was」，以強調該陳述的假設性質。
He acts as if he were the boss.
他表現得好像他自己是老闆一樣。
EN： In modern workplace culture, 'as if the deadline were tomorrow' describes a high-stress, fast-paced approach to project management, often associated with agile environments or high-pressure startups.
中文： 在現代職場文化中，「彷彿截止日期就是明天」描述了一種高壓、快節奏的專案管理方式，這通常與敏捷開發環境或高壓的新創公司文化息息相關。
EN： This sentence uses a mixed conditional structure. The condition ('Had we begun earlier') refers to an unreal past event, while the result ('we would be done now') refers to an unreal present state. The conditional clause uses inversion (omitting 'if' and placing the auxiliary verb 'had' before the subject) to make the tone more formal.
中文： 此句使用了混合條件句結構。條件子句（Had we begun earlier）指的是與過去事實相反的假設，而結果子句（we would be done now）則指與現在事實相反的狀態。條件子句中省略了 'if' 並將助動詞 'had' 移至主詞前面，形成倒裝句，使語氣顯得更為正式。
Had he taken the map, he would not be lost now.
要是他那時帶了地圖，現在就不會迷路了。
EN： The phrase 'be done' is commonly used in spoken English as an adjective meaning 'finished' or 'completed'. Combined with 'would', it expresses a hypothetical completed state in the present.
中文： 片語 'be done' 在英語口語中常用作形容詞，意思是「完成」或「結束」。與 'would' 連用時，表示在現在時間點假設已完成的狀態。
I will be done with my homework soon.
我很快就會寫完功課了。
EN： Using inversion in conditional sentences (like 'Had we...' instead of 'If we had...') is a hallmark of formal, written English or professional spoken contexts. It adds a touch of sophistication and urgency to the statement.
中文： 在條件句中使用倒裝結構（例如用 'Had we...' 代替 'If we had...'）是正式書面英語或專業口語表達的特徵。它能為陳述增添一種高雅且帶有緊迫感的語氣。
EN： The subjunctive structure 'It is high time + subject + past simple verb' is used to express that something should have been done already, and there is a strong sense of urgency or slight criticism.
中文： 虛擬語氣結構「It is high time + 主詞 + 過去式動詞」用於表示某事早就該做而未做，帶有強烈的緊迫感或輕微的責備意味。
It is high time we started the meeting.
我們早就該開始開會了。
EN： The comparative adjective 'bolder' is formed by adding '-er' to the base adjective 'bold'. It is used to compare the level of bravery or innovation of the new idea against previous ones.
中文： 比較級形容詞「bolder」（更膽大的）是在原級形容詞「bold」後面加上「-er」構成。用於將新想法的膽識或創新程度與先前的想法進行比較。
We need a bolder strategy to win the market.
我們需要一個更膽大的策略來贏得市場。
EN： In Western business and creative cultures, expressing the need for a 'bolder idea' is highly valued. It shows initiative, a willingness to take calculated risks, and a desire to break away from conventional, safe solutions to achieve breakthrough results.
中文： 在西方商業與創意文化中，表達需要「更膽大的想法」是非常受到重視的。這展現了主動性、承擔合理風險的意願，以及渴望打破常規、安全妥協的方案以取得突破性成果的決心。
EN： Second Conditional (Hypothetical Present/Future): Used to describe imaginary, unlikely, or impossible situations in the present or future. The 'if' clause uses the past subjunctive (were), and the main clause uses 'would' + base verb.
中文： 與現在事實相反的假設語氣（第二類條件句）：用於表示與現在或未來事實相反、或極不可能發生的假設情況。條件子句（if 子句）使用過去式動詞（be 動詞一律用 were），主要子句則使用「would / should / could / might + 原形動詞」。
If I had more time, I would learn how to play the piano.
如果我有更多時間，我會去學彈鋼琴。
EN： Subjunctive 'were' for all subjects: In formal English and conditional structures, 'were' is used instead of 'was' for singular subjects (I, he, she, it) to emphasize the hypothetical nature of the statement.
中文： 虛擬語氣中單數主詞搭配 'were'：在正式英文與假設語氣中，不論主詞是第幾人稱單數（如 I, he, she, it），be 動詞一律使用 'were' 而非 'was'，以強調該情況純屬假設而非事實。
If she were here, she would know what to do.
如果她在這裡，她就會知道該怎麼做。
EN： The verb 'wish' is followed by a clause in the past subjunctive (using a past tense verb like 'shared') to express a desire for a present or future situation to be different from reality. This is often called a 'present wish'.
中文： 動詞「wish」（希望）後面接子句時，子句中的動詞需使用過去虛擬語氣（如過去式動詞「shared」），用來表示對「與現在或未來事實相反」的願望或期待。
I wish I knew the answer to this question.
我希望我知道這個問題的答案（但實際上我不知道）。
EN： The adverbial phrase 'more often' is the comparative form of 'often', used to describe an action happening with greater frequency.
中文： 副詞片語「more often」是「often」（經常）的比較級形式，用來描述某個動作以更高的頻率發生。
EN： In Western workplace culture, open communication and sharing ideas are highly valued. Using 'I wish...' is a polite, non-confrontational way to suggest improvement or express a desire for change without directly criticizing team members.
中文： 在西方職場文化中，開放式溝通與分享想法受到高度重視。使用「I wish...」（我希望...）是一種禮貌且不具衝突性的方式，用來提出改進建議或表達改變的期望，而不會直接批評團隊成員。
EN： The phrase 'What if...?' is used to propose a hypothetical situation or suggest a course of action. When followed by a past tense verb (e.g., 'turned'), it expresses a hypothetical or imaginary situation in the present or future (subjunctive mood).
中文： 「What if...?」（如果……會怎麼樣？）用於提出假設的情況或建議。當後面接過去式動詞（例如「turned」）時，表示對現在或未來狀況的虛擬假設（虛擬語氣）。
What if we started our own business next year?
如果我們明年自己創業會怎麼樣？
EN： The phrasal verb 'turn A into B' means to transform or change something (A) into a different form or state (B).
中文： 片語動詞「turn A into B」意為將某物（A）轉化或改變為不同的形式或狀態（B）。
She turned her hobby into a successful career.
她把自己的愛好轉化成了成功的事業。
EN： The phrase 'What if' is a powerful rhetorical tool in English, often used in brainstorming sessions, inspirational speeches, and visionary discussions to encourage creative thinking and challenge the status quo.
中文： 「What if」在英語中是一個強而有力的修辭工具，常用於腦力激盪會議、勵志演講和前瞻性討論中，用以激發創造性思維並挑戰現狀。
重要單字附有 IPA 發音、定義、例句和互動式測驗。
在本文中： 穩定的，不易受氣候變化等劇烈波動影響的狀態
在本文中： 投入（資金、時間或精力）於研究或某項事業中
在本文中： 探索、探究，指深入研究或思考問題
在本文中： 截止日期，最後限期
在本文中： 更大膽的，更具開創性或冒險精神的（原形為 bold）
在本文中： 資助，為…提供資金
在本文中： 想像，在腦海中構想
在本文中： 氣候變遷，指全球氣候模式的長期改變
片語包含類型標示、雙語定義、用法說明和例句。
Energy that does not pollute the atmosphere when used, as opposed to coal and oil.
清潔能源，綠色能源
Used to say that something should have been done before now or should be done immediately.
正是時候…，早就該…
To regard someone or something as important and worthy of attention or respect.
認真對待，重視
To change or develop into something different.
轉化為，變成