EN： The modal verb 'can' is used here to express possibility, indicating that something is capable of happening in certain circumstances.
中文： 情态动词“can”在此处用于表示“可能性”，说明某事在特定情况下是有可能发生的。
Accidents can occur if you are not careful.
如果你不小心，就可能会发生事故。
EN： The phrase 'at any time' and 'in any place' use the determiner 'any' to emphasize that there are no exceptions or specific limits to when or where something happens.
中文： 短语“at any time”和“in any place”使用了限定词“any”，用以强调某事发生的时间或地点没有任何例外或限制。
You can call me at any time.
你可以在任何时间给我打电话。
EN： Adverbial Clause of Time: The sentence starts with a subordinate clause introduced by 'When', which sets the condition or timing for the main action.
中文： 时间状语从句：句子以 'When' 引导的从属从句开头，用于设定主句动作发生的条件或时间点。
When the bell rings, the students leave the classroom.
当铃声响起时，学生们离开了教室。
EN： Passive Voice: 'is injured' uses the structure 'be + past participle' to show that the subject receives the action rather than performing it.
中文： 被动语态：'is injured' 使用了“be 动词 + 过去分词”的结构，说明主语是动作的承受者（受了伤）而非发出者。
The window was broken during the storm.
窗户在暴风雨中被弄坏了。
EN： In many English-speaking countries, the 'Golden Hour' or the first few minutes of an emergency are emphasized in public health education to encourage bystanders to act quickly before professional help arrives.
中文： 在許多英語系國家，公共衛生教育非常強調「黃金時間」或急救最初的幾分鐘，旨在鼓勵旁觀者在專業救援到達前迅速採取行動。
EN： Gerund as Subject: A gerund is the '-ing' form of a verb that functions as a noun. In this sentence, 'Knowing basic first aid' acts as the subject of the sentence.
中文： 动名词作主语：动名词是动词的 -ing 形式，功能相当于名词。在本句中，“Knowing basic first aid”（掌握基础急救知识）充当整个句子的主语。
Learning a new language opens up many opportunities.
学习一门新语言会带来很多机会。
EN： Help + Object + (to) Verb: The verb 'help' can be followed by an object and then either a bare infinitive (verb without 'to') or a full infinitive (with 'to'). Both 'help you save' and 'help you to save' are correct.
中文： Help 的用法：动词 help 后面接宾语后，既可以接不带 to 的动词原形，也可以接动词不定式（to + 动词）。“help you save”与“help you to save”均为正确表达。
She helped me finish my homework.
她辅导我完成了作业。
EN： In many English-speaking countries, first aid training is highly encouraged and often required for certain jobs (like teaching or coaching). There are also 'Good Samaritan' laws that protect people who provide reasonable assistance to those who are injured or ill.
中文： 在許多英語系國家，非常鼓勵民眾接受急救訓練，某些職業（如教師或教練）通常會強制要求。此外，還有「好撒馬利亞人法」（Good Samaritan laws），旨在保護那些對傷病者提供合理援助的施救者，免於因疏忽而承擔法律責任。
EN： Gerund as Subject: A gerund (verb + -ing) functions as a noun and can be the subject of a sentence. It represents an action or a state.
中文： 动名词作主语：动名词（动词-ing 形式）具有名词的功能，可以作句子的主语，用来表示一项动作或状态。
Learning first aid is very useful.
学习急救知识是非常有用的。
EN： Adjective Clause (Relative Clause): The phrase '(that) you can do' is an adjective clause modifying 'the most important thing'. In this case, the relative pronoun 'that' is omitted because it is the object of the verb 'do'.
中文： 定语从句（关系从句）：短语“(that) you can do”是一个定语从句，用来修饰“the most important thing”。在这种情况下，关系代词“that”由于在从句中作动词“do”的宾语，因此被省略了。
This is the best movie I have ever seen.
这是我看过最好看的电影。
EN： In many English-speaking cultures, 'Keep Calm and Carry On' is a famous slogan that reflects the cultural value placed on emotional control during crises.
中文： 在許多英語系國家的文化中，「保持冷靜，繼續前行」(Keep Calm and Carry On) 是一個著名的標語，反映了在危機中保持情緒控制的文化價值觀。
EN： The sentence uses a Relative Clause (Adjective Clause) starting with 'that'. This clause 'that everyone should know' modifies the noun phrase 'essential first aid skills' to provide more specific information.
中文： 本句使用了由 'that' 引导的定语从句（关系从句）。该从句 'that everyone should know' 用于修饰名词短语 'essential first aid skills'（必备急救技能），以提供更具体的说明。
He bought a book that everyone is talking about.
他买了一本大家都在讨论的书。
EN： The Future Tense with 'will' is used here to express a promise or a statement about what the reader is going to encounter in the upcoming text.
中文： 此处使用由 'will' 引导的一般将来时，用于表达承诺或说明读者在接下来的文本中将会看到的内容。
In the next chapter, you will see how the story ends.
在下一章中，你将看到故事是如何结尾的。
EN： In many English-speaking countries, basic first aid knowledge is highly encouraged and often taught in schools or workplaces. Being a 'Good Samaritan' (helping others in distress) is a valued social trait.
中文： 在許多英語系國家，政府高度鼓勵民眾具備基本急救知識，且學校或職場通常會提供相關培訓。成為「好撒馬利亞人」（Good Samaritan，指樂於助人的人）是被高度認可的社會特質。
EN： The use of 'if' as a conjunction to introduce a noun clause (indirect question). In this context, it means 'whether' and follows the verb 'check' to express uncertainty or a condition to be verified.
中文： 使用 'if' 作为连词引导名词性从句（间接疑问句）。在此语境下，它的意思是“是否”，接在动词 'check' 之后，用于表达不确定性或需要核实的情况。
Please check if the door is locked.
请检查一下门是否锁好了。
EN： The use of an infinitive phrase ('to check...') as a subject complement. This structure (Subject + be verb + to-infinitive) is used to define or explain the subject.
中文： 使用不定式短语（'to check...'）作主语补足语（表语）。这种“主语 + be 动词 + 不定式”的结构用于定义或解释主语的内容。
My goal is to finish the project by Friday.
我的目标是在周五前完成这项项目。
EN： In first aid training worldwide (such as Red Cross or AHA), 'Scene Safety' is always emphasized as the absolute first priority. This is to prevent the rescuer from becoming a second victim.
中文： 在全球的急救訓練（如紅十字會或美國心臟協會）中，「現場安全」始終被強調為絕對的首要任務。這是為了防止施救者成為第二個受害者。
EN： The modal verb 'should' combined with the frequency adverb 'never' expresses a strong recommendation or moral obligation against an action. 'Never' is placed between the modal verb and the main verb.
中文： 情态动词 'should' 与频度副词 'never' 连用，表示强烈的建议或道德义务。'never' 通常置于情态动词与主动词之间。
You should never leave your luggage unattended at the airport.
你不应该把行李独自留在机场无人看管。
EN： The conjunction 'while' can be followed by a present participle (-ing form) to indicate two actions happening at the same time. This is a reduced adverbial clause where the subject and 'be' verb are omitted.
中文： 连词 'while' 后面可以接现在分词（-ing 形式），用于表示两个动作同时发生。这是一种简化的状语从句，省略了主语和 be 动词。
Please be careful while crossing the street.
过马路时请小心。
EN： In Western first aid training (like Red Cross or AHA), the very first rule is 'Scene Safety.' Rescuers are taught that they cannot help others if they become victims themselves. This reflects a practical approach to emergency management.
中文： 在西方急救訓練（如紅十字會或美國心臟協會）中，首要規則就是「現場安全」。施救者被教導，如果自己也成了受害者，就無法幫助他人。這反映了緊急情況管理中的實用主義原則。
EN： The conjunction 'Once' is used to indicate that as soon as one event happens, another event will follow. It often introduces a time clause.
中文： 连词 'Once' 用于表示一旦某事发生，另一件事就会紧接着发生。它通常引导时间状语从句。
Once you finish your homework, you can watch TV.
一旦你完成作业，就可以看电视了。
EN： The word 'if' is used here as a subordinator to introduce an indirect question or a noun clause, meaning 'whether'.
中文： 这里的 'if' 用作从属连词，引导间接疑问句或名词性从句，意思是“是否”。
I don't know if he will come to the party.
我不知道他是否会来参加聚会。
EN： In many Western countries, 'Scene Safety' is the absolute first priority taught in first aid (like Red Cross or AHA courses). You are advised not to become a second victim by rushing into a dangerous situation.
中文： 在許多西方國家的急救課程中（如紅十字會或美國心臟協會），「現場安全」是絕對的首要任務。急救員被告知不要冒然進入危險環境，以免成為第二個受害者。
EN： Imperative Mood: This sentence uses the imperative mood to give instructions or commands. It starts directly with the base form of the verb (Talk, tap), omitting the subject 'you'.
中文： 祈使句：本句使用祈使语气来给出指令或建议。句子直接以动词原形（Talk, tap）开头，省略了主语“you”。
Open the window and let some fresh air in.
打开窗户，让新鲜空气进进来。
EN： Compound Predicate: The sentence uses the conjunction 'and' to connect two verbs (Talk and tap) that share the same implied subject.
中文： 复合谓语：句子使用连词“and”连接两个动词（Talk 和 tap），这两个动词共用同一个省略的主语。
Sit down and relax for a moment.
坐下来休息一下。
EN： In emergency first aid, 'gently tapping' is a standard way to check for responsiveness without causing further injury. It is important to avoid shaking the person, especially if a neck or spinal injury is suspected.
中文： 在緊急救護中，「輕輕拍打」是確認傷者意識的標準方法，以避免造成進一步傷害。特別是在懷疑有頸部或脊椎受傷時，絕對要避免搖晃傷者。
EN： First Conditional: Used to talk about things which might happen in the future. The structure is 'If + present simple, will/should/can + verb'.
中文： 第一类条件句：用于描述将来可能发生的情况及其结果。结构为“If + 一般现在时，will/should/can + 动词原形”。
If it rains tomorrow, we will stay at home.
如果明天下雨，我们就会待在家里的。
EN： Modal Verb 'Should': Used to give advice or indicate what is the right thing to do.
中文： 情态动词 'Should'：用于提出建议或说明应当做的正确事情。
You should eat more vegetables for your health.
为了你的健康，你应当多吃蔬菜。
EN： In many English-speaking countries, the emergency number is 911 (USA/Canada) or 999 (UK). When calling, the operator will ask 'Emergency, which service?' and you should specify 'Ambulance'.
中文： 在許多英語系國家，緊急電話是 911（美加）或 999（英國）。撥打時，接線員會問「緊急情況，需要哪種服務？」，此時你應明確回答「Ambulance」（救護車）。
EN： Adverbial Clause of Time: The sentence starts with a 'When' clause, which sets the timeframe for the main action. In such clauses, we use the present simple tense to refer to future or general situations.
中文： 时间状语从句：句子以 'When' 引导的从句开头，为主要动作设定了时间背景。在这类从句中，我们使用一般现在时来表示将来或普遍情况。
When you arrive at the station, please call me.
你到达车站时，请给我打电话。
EN： Imperative Mood: The main clause uses verbs like 'speak' and 'give' without a subject. This is the imperative mood, used to give instructions, commands, or advice.
中文： 祈使句：主句使用了 'speak' 和 'give' 等动词且省略了主语。这是祈使句用法，用于给出指示、命令或建议。
Listen carefully and take notes during the meeting.
开会期间请认真听讲并做笔记。
EN： In many English-speaking countries, the emergency number is 911 (USA/Canada) or 999 (UK). When calling, the dispatcher will prioritize your location to ensure help can be sent even if the call is disconnected.
中文： 在許多英語系國家，緊急電話是 911（美加）或 999（英國）。撥打時，調度員會優先詢問你的位置，以確保即使通話中斷也能派遣救援。
EN： Indirect Questions: When a question is used as an object within a sentence, the word order changes from 'question form' (verb-subject) to 'statement form' (subject-verb). For example, 'How many people are injured?' becomes '...how many people are injured.'
中文： 间接疑问句：当疑问句在句中作宾语时，语序会从“疑问语序”（动词+主语）调整为“陈述语序”（主语+动词）。例如，“有多少人受伤？”在句中会变成“……有多少人受伤”。
I don't know where he lives.
我不知道他住在哪儿。
EN： Present Perfect Tense: Formed with 'have/has + past participle', it is used here to describe an event that happened at an unspecified time in the past but is relevant to the current situation.
中文： 现在完成时：由“have/has + 过去分词”构成，此处用于描述过去发生但对现在产生影响的事件，且未明确指明具体时间。
The police have arrived at the scene.
警察已经到达现场了。
EN： In many English-speaking countries, emergency dispatchers are trained to keep you on the phone. Providing clear, concise information about the number of victims helps them prioritize resources (like sending multiple ambulances).
中文： 在許多英語系國家，緊急調度員受過訓練會讓你保持通話。提供關於受害者人數的清晰簡潔資訊，能幫助他們優先分配資源（例如派遣多輛救護車）。
EN： The structure 'One of the + superlative adjective + plural noun' is used to pick one item from a group of items that share a specific quality. Note that the noun must be plural, but the verb remains singular because the subject is 'One'.
中文： 结构“One of the + 形容词最高级 + 复数名词”用于从一组具有特定特征的事物中挑选出一个。请注意，名词必须用复数形式，但谓语动词要用单数，因为主语是“One”（其中之一）。
One of the tallest buildings is in Taipei.
最高的大楼之一在台北。
EN： Superlative adjectives (e.g., 'the most important') are used to compare three or more things. For long adjectives, we use 'the most' before the word.
中文： 形容词最高级（例如 the most important）用于三者或三者以上的比较。对于多音节形容词，我们在词前加“the most”。
This is the most difficult task of the day.
这是今天最困难的任务。
EN： In many English-speaking countries, CPR is a standard skill taught in schools or workplaces. 'Good Samaritan laws' often protect people who perform CPR in good faith during an emergency.
中文： 在許多英語系國家，CPR 是學校或職場中教授的標準技能。「好撒馬利亞人法」(Good Samaritan laws) 通常會保護那些在緊急情況下出於善意進行 CPR 的施救者。
EN： The phrasal verb 'stand for' is used to indicate what an abbreviation or symbol represents.
中文： 短语动词“stand for”用于表达缩写或符号所代表的全称或含义。
UN stands for the United Nations.
UN 代表联合国。
EN： The present perfect tense (has stopped) is used here to describe an action that has recently happened and has a direct result in the present.
中文： 现在完成时 (has stopped) 在此处用于描述最近发生且对现在有直接影响的动作。
The rain has stopped, so we can go out now.
雨已经停了，所以我们现在可以出去了。
EN： In many English-speaking countries, CPR training is a common requirement for teachers, coaches, and workplace safety officers. The term 'cardiopulmonary' combines 'cardio' (heart) and 'pulmonary' (lungs).
中文： 在許多英語系國家，CPR 訓練是教師、教練和職場安全人員的常見要求。術語「cardiopulmonary」結合了「cardio」（心臟）和「pulmonary」（肺部）兩個詞根。
EN： The sentence begins with an 'Infinitive Phrase' (To + verb) used as an adverb of purpose. It explains 'why' the action in the main clause is being performed.
中文： 句子以“不定式短语”（To + 动词）开头，用作目的状语。它解释了为什么要执行主句中的动作。
To stay healthy, you should exercise every day.
为了保持健康，你应当每天锻炼。
EN： The main clause is an 'Imperative Sentence'. In English, imperatives are used to give instructions or commands. They start with the base form of the verb and the subject 'you' is implied but omitted.
中文： 主句是一个“祈使句”。在英语中，祈使句用于给出指示或命令。它们以动词原形开头，主语“you”被省略。
Open the window to let some fresh air in.
打开窗户，让新鲜空气进来。
EN： In many Western countries, 'Good Samaritan laws' protect people who provide reasonable assistance to those who are injured or ill, encouraging bystanders to perform CPR without fear of legal repercussions.
中文： 在許多西方國家，「好撒馬利亞人法」（Good Samaritan laws）保護那些為傷病者提供合理援助的人，鼓勵旁觀者進行心肺復甦術，而不必擔心法律後果。
EN： Imperative Mood: This sentence uses the imperative mood, which is used to give commands, instructions, or advice. It starts with the base form of the verb (Put) and omits the subject 'you'.
中文： 祈使句：本句使用了祈使语气，用于下达命令、指示或提出建议。句子以动词原形 (Put) 开头，省略了主语 'you'。
Place the bandage over the wound.
将绷带敷在伤口上。
EN： Prepositional Phrases of Place: The sentence uses two prepositional phrases ('on the center' and 'of their chest') to provide specific spatial information about where the action should occur.
中文： 地点介词短语：本句使用了两个介词短语（'on the center' 和 'of their chest'），用于提供有关动作发生位置的具体空间信息。
Stand in the middle of the room.
站在房间的中间。
EN： In first aid contexts, 'heel of the hand' is a technical term referring to the padded part of the palm near the wrist, which provides the most force during CPR.
中文： 在急救情境中，'heel of the hand'（手掌根部）是一個專業術語，指靠近手腕處有肉的部位，這是在進行心肺復甦術 (CPR) 時能提供最大力量的地方。
EN： Imperative Mood: The sentence starts with verbs (Push) without a subject to give a direct command or instruction. This is common in manuals and emergency procedures.
中文： 祈使句：句子以动词（Push）开头且省略了主语，用于给出直接的指令或说明。这在操作手册和紧急规程中非常常见。
Stay calm and call for help.
保持冷静并呼救。
EN： Adverbs of Manner: 'Hard' and 'fast' function as adverbs here, describing how the action (push) should be performed.
中文： 方式副词：'Hard'（用力地）与 'fast'（快速地）在此处用作副词，修饰并说明动作（按压）应该如何执行。
Run fast to catch the bus.
跑快点，以便赶上公交车。
EN： The recommended CPR rate (100-120 bpm) matches the beat of popular songs like 'Stayin' Alive' by the Bee Gees, which is often used in first aid training to help people maintain the correct rhythm.
中文： 建議的 CPR 按壓速率（每分鐘 100-120 次）與 Bee Gees 的名曲《Stayin' Alive》節奏吻合。在急救訓練中，常建議學員腦中想著這首歌的節奏來維持正確的按壓速率。
EN： The Present Perfect Passive (have/has been + past participle) is used to describe an action that happened at an unspecified time in the past where the subject receives the action.
中文： 现在完成时的被动语态（have/has been + 过去分词）用于描述过去某个不确定时间点发生的动作，且主语是动作的承受者。
The students have been taught how to use the fire extinguisher.
学生们已经接受过如何使用灭火器的培训。
EN： The First Conditional (If + present simple, can/will + base verb) is used to talk about possibilities in the present or future that are likely to happen.
中文： 第一类条件句（If + 一般现在时，can/will + 动词原形）用于讨论在现在或将来极有可能发生的情况。
If you finish your homework, you can watch TV.
如果你完成作业，你就可以看电视。
EN： In many Western countries, 'Good Samaritan laws' protect people who provide reasonable assistance to those who are injured or ill, encouraging bystanders to help without fear of being sued.
中文： 在許多西方國家，設有「好撒馬利亞人法」（Good Samaritan laws），旨在保護那些對傷病者提供合理援助的人，鼓勵旁觀者施救而無需擔心法律訴訟。
EN： Passive Voice with Modal Verbs: The structure 'modal verb + be + past participle' (should be continued) is used when the focus is on the action being performed rather than who is doing it.
中文： 含情态动词的被动语态：结构为“情态动词 + be + 过去分词”(should be continued)，用于强调动作本身而非动作的发出者。
The medicine must be taken after meals.
这药必须在饭后服用。
EN： Subordinating Conjunction 'until': This conjunction connects a main clause to a time clause, indicating that an action continues up to a specific point in time.
中文： 从属连词 'until'：此连词将主句与时间状语从句连接，表示某个动作一直持续到特定时间点为止。
Wait here until I come back.
在这里等着，直到我回来。
EN： In many English-speaking countries, the 'Good Samaritan law' protects people who provide reasonable assistance to those who are injured or in peril, encouraging bystanders to perform CPR without fear of being sued.
中文： 在許多英語系國家，設有「好撒馬利亞人法」(Good Samaritan law)，旨在保護那些對傷者提供合理援助的人，鼓勵旁觀者在緊急情況下施行 CPR 而不必擔心法律訴訟。
EN： Gerunds as Subject Complements: In this sentence, 'treating' and 'applying' are gerunds (verb + -ing) acting as nouns. They follow the linking verb 'is' to define or describe the subject 'skill'.
中文： 动名词作表语：在本句中，“treating”和“applying”是动名词（verb + -ing），其功能相当于名词。它们接系动词“is”之后，用于界定或描述主语“skill”。
My favorite hobby is playing basketball.
我最喜欢的兴趣爱好是打篮球。
EN： Parallel Structure: When connecting two ideas with 'and', both should use the same grammatical form. Here, both 'treating' and 'applying' are gerunds, creating a balanced and clear sentence.
中文： 平行结构：当使用“and”连接两个概念时，两者应使用相同的语法形式。这里“treating”和“applying”均为动名词，使句子结构对称且清晰。
She enjoys swimming and running in the morning.
她喜欢在早上游泳和跑步。
EN： In many English-speaking countries, basic first aid knowledge is considered a civic responsibility. Schools and workplaces often require or encourage individuals to take certified courses from organizations like the Red Cross.
中文： 在許多英語系國家，具備基本的急救知識被視為一種公民責任。學校和職場通常會要求或鼓勵個人參加紅十字會等機構提供的認證課程。
EN： The sentence uses a First Conditional structure (If + present simple, ... should/will + verb) to describe a real possibility and a recommended action. It also contains a relative clause 'that is bleeding' to modify the noun 'cut'.
中文： 本句使用了第一类条件句结构（If + 一般现在时，... should/will + 动词原形）来描述真实的可能性与建议采取的行动。此外，句中还包含定语从句“that is bleeding”，用来修饰名词“cut”（伤口）。
If you see a fire, you should call the fire department immediately.
如果你看到火灾，应该立即拨打火警电话。
EN： The relative pronoun 'that' introduces a defining relative clause, identifying exactly which 'cut' is being referred to (the one that is bleeding).
中文： 关系代词“that”引导一个限定性定语从句，用于明确指出所指的是哪一种“伤口”（正在流血的那一个）。
The book that is on the table belongs to me.
桌上的那本书是我的。
EN： In Western first aid training, 'BSI' (Body Substance Isolation) is a key concept. Washing hands and wearing gloves is emphasized to protect both the rescuer and the victim from cross-contamination and bloodborne pathogens.
中文： 在西方急救訓練中，「身體物質隔離」(BSI) 是一個核心概念。強調洗手和戴手套是為了保護施救者和傷者，避免交叉感染和血液傳染病。
EN： The sentence uses the Imperative Mood (starting with the base verb 'press') to give a direct instruction or command. The adverb 'firmly' modifies the verb to describe how the action should be performed.
中文： 本句使用了祈使语气（以动词原形 press 开头）来给出直接的指示或命令。副词 firmly 修饰动词，用于说明动作应当如何执行。
Hold the handle firmly while turning the key.
转动钥匙时请紧紧握住把手。
EN： The phrase 'to stop the bleeding' is an Infinitive of Purpose. It explains 'why' the action (pressing the cloth) is being done.
中文： 短语 'to stop the bleeding' 是不定式作目的状语的用法。它解释了为什么要执行该动作（按压布料）。
He used a bandage to cover the cut.
他用绷带包扎了伤口。
EN： In many English-speaking countries, first aid training emphasizes 'direct pressure' as the primary method to control bleeding. Using a 'clean cloth' is a standard instruction to prevent infection while providing immediate care.
中文： 在許多英語系國家，急救訓練強調「直接加壓」是控制出血的首要方法。使用「乾淨的布」是標準指令，旨在提供即時護理的同時防止感染。
EN： The conjunction 'Once' is used to indicate that as soon as one event happens, another will occur. It is often used with the Present Perfect tense (has slowed down) to emphasize the completion of the first action before the second action begins.
中文： 连词“Once”（一旦）用于表示某件事一发生，另一件事随即发生。常与现在完成时 (has slowed down) 连用，以强调在第二个动作开始之前，第一个动作必须先完成。
Once you have finished your homework, you can watch TV.
一旦你完成了作业，就可以看电视了。
EN： Imperative Mood: The main clause 'clean the wound' uses the base form of the verb to give a command or instruction. In English, the subject 'you' is understood and omitted in imperative sentences.
中文： 祈使句：主句“clean the wound”使用动词原形来发布命令或指令。在英语中，祈使句的主语“you”通常省略。
Close the door quietly when you leave.
离开时请轻轻关上门。
EN： In first aid instructions, using clear and direct language (the imperative mood) is standard practice to ensure that the steps are easy to follow during a stressful emergency.
中文： 在急救指令中，使用清晰且直接的語言（祈使句）是標準做法，以確保在緊張的緊急情況下，步驟易於遵循。
EN： The sentence uses the 'Imperative Mood', which is used to give commands, instructions, or advice. It starts directly with a base verb (apply) and the subject 'you' is implied but omitted.
中文： 本句使用了“祈使句”(Imperative Mood)，用于下达命令、指示或提出建议。句子直接以动词原形 (apply) 开头，省略了主语 "you"。
Wash your hands before eating.
吃饭前要洗手。
EN： The 'to-infinitive' (to protect) is used here as an adverbial of purpose, explaining 'why' the action of applying a bandage is performed.
中文： “动词不定式”(to-infinitive，即 to + 动词原形) 在此处用作目的状语，解释“为什么”要包扎绷带。
He exercised every day to stay healthy.
他每天锻炼以保持健康。
EN： In many English-speaking countries, basic first aid knowledge is highly encouraged and often taught in schools or workplaces. The phrase 'protect from infection' reflects a common medical priority in Western first aid: preventing secondary complications after the initial injury.
中文： 在許多英語系國家，基本的急救知識受到高度重視，且經常在學校或職場中教授。「保護免於感染」(protect from infection) 反映了西方急救中的一個常見醫療重點：預防初始受傷後的二次併發症。
EN： First Conditional (Real Condition): Used to talk about things which might happen in the future. The 'if' clause uses the Present Simple, and the main clause uses the Present Simple (for general truths) or 'will' (for specific future results).
中文： 第一类条件句（真实条件句）：用于描述未来可能发生的情况。'if' 引导的条件从句使用一般现在时，主句则使用一般现在时（表示客观真理）或 'will'（表示特定未来的结果）。
If you feel dizzy, you should sit down immediately.
如果你感到头晕，应该立即坐下。
EN： Compound Subjects/Clauses with 'or': The conjunction 'or' is used to connect two alternative conditions. In this sentence, it connects two different situations that would both lead to the same result.
中文： 带 'or' 的复合主语或从句：连词 'or' 用于连接两个可供选择的条件。在本句中，它连接了两种不同的情况，而这两种情况都会引发相同的后果。
If the pain continues or the fever gets worse, call a doctor.
如果疼痛持续或发烧加重，请打电话给医生。
EN： In many English-speaking countries, 'medical help' in an emergency context often implies calling emergency services (like 911 or 999) or going to an 'Emergency Room' (ER) or 'Accident and Emergency' (A&E) department.
中文： 在許多英語系國家，緊急情況下的「醫療協助」（medical help）通常意指撥打緊急服務電話（如 911 或 999），或前往醫院的「急診室」（ER 或 A&E）。
EN： Gerund as Subject: A gerund (verb + -ing) functions as a noun and can be the subject of a sentence. It is treated as a singular noun.
中文： 动名词作主语：动名词（动词-ing 形式）具有名词的功能，可以作句子的主语。在语法上通常被视为单数。
Reading books helps improve your vocabulary.
阅读书籍有助于扩大你的词汇量。
EN： Modal Verb 'Could': Used here to express possibility or potential impact in a specific situation.
中文： 情态动词 'Could'：在此处用于表示在特定情况下的可能性或潜在影响。
Taking a map could prevent you from getting lost.
带上地图可以防止你迷路。
EN： In many English-speaking countries, basic first aid knowledge is highly encouraged and often taught in schools or workplaces. The phrase 'make a real difference' emphasizes the civic responsibility and the impact an individual can have in a crisis.
中文： 在許多英語系國家，基本的急救知識受到高度重視，通常在學校或工作場所中教授。'make a real difference' 這個片語強調了公民責任以及個人在危機中能產生的影響力。
EN： Relative Clauses (Adjective Clauses): The word 'that' introduces a clause that describes the noun 'courses'. It functions as the subject of the clause 'that are designed for beginners'.
中文： 定语从句：单词 'that' 引导一个从句来修饰名词 'courses'（课程）。在 'that are designed for beginners' 这个从句中，'that' 作主语。
I like books that have happy endings.
我喜欢有圆满结局的书。
EN： Passive Voice: The structure 'be + past participle' (are designed) indicates that the subject (courses) receives the action rather than performing it.
中文： 被动语态：结构为“be + 过去分词”(are designed)，表示主语（课程）是动作的承受者，而非发出者。
This smartphone is designed for elderly people.
这款智能手机是专为老年人设计的。
EN： In many English-speaking countries, first aid certification is a common requirement for certain jobs (like teaching or coaching) and is highly valued as a civic responsibility.
中文： 在許多英語系國家，取得急救證照是某些職業（如教學或教練）的常見要求，且被視為一種重要的公民責任。
EN： The structure 'how to + base verb' is a noun phrase used as an object. It indicates the method or way of performing an action.
中文： “how to + 动词原形”结构是一个名词短语，用作宾语。它表示执行某个动作的方法或方式。
She showed me how to use the new software.
她向我演示了如何使用这款新软件。
EN： The prepositional phrase 'from A to B' is used to show a range or scope between two points, in this case, the severity of injuries.
中文： 介词短语“from A to B”用于表示两点之间的范围或程度，在句中是指受伤严重程度的范围。
The store sells everything from toys to electronics.
这家店销售从玩具到电子产品的所有商品。
EN： In many English-speaking countries, first aid training is highly encouraged and often required for certain jobs (like teaching or coaching). The 'Good Samaritan' laws in these regions often protect people who provide reasonable assistance to those who are injured or ill.
中文： 在許多英語系國家，急救訓練受到高度鼓勵，且某些職業（如教師或教練）通常要求具備相關證照。這些地區的「好撒馬利亞人法」(Good Samaritan laws) 通常會保護那些對傷病者提供合理援助的人，免受法律追訴。
EN： The sentence uses 'that' as a conjunction to introduce a noun clause (object clause). This clause functions as the object of the imperative verb 'Remember', specifying what should be remembered.
中文： 本句使用 'that' 作为连词来引导名词性从句（宾语从句）。该从句作祈使句动词 'Remember' 的宾语，具体说明应该记住的内容。
I believe that everyone can learn first aid.
我相信每个人都能学会急救。
EN： The 'to + verb' (infinitive) structure here expresses purpose. It explains 'why' you would be a doctor or take action—in this case, 'to help someone'.
中文： 这里的 'to + 动词'（动词不定式）结构用来表示目的。它解释了为什么要成为医生或采取行动——在本例中是“为了帮助某人”。
He ran fast to catch the bus.
他跑得很快以便赶上公交车。
EN： In many English-speaking countries, 'Good Samaritan laws' protect people who provide reasonable assistance to those who are injured or ill. This sentence reflects the cultural encouragement for ordinary citizens to act in emergencies without fear of legal repercussions for not being a professional.
中文： 在許多英語系國家，「好撒馬利亞人法」(Good Samaritan laws) 保護那些為傷病者提供合理援助的人。這句話反映了鼓勵普通公民在緊急情況下採取行動的文化，而不必擔心因為自己不是專業人士而承擔法律責任。
EN： The use of 'like' as a preposition to introduce examples. It is followed by gerunds (verb-ing) when describing actions.
中文： 使用 'like' 作为介词来举例。当接动作时，后面需跟动名词 (V-ing)。
Healthy habits, like exercising daily or eating vegetables, are good for you.
健康的生活习惯，比如每天运动或吃蔬菜，对你的身体很有好处。
EN： The modal verb 'can' expresses possibility or ability. Here it indicates the potential outcome of an action.
中文： 情态动词 'can' 用于表达可能性或能力。在这里它表示某个行动可能产生的后果。
Regular practice can improve your English skills significantly.
规律的练习可以显著提高你的英语水平。
EN： In many English-speaking countries, calling an ambulance (911 in the US, 999 in the UK, 000 in Australia) is the first and most critical step in an emergency. There are also 'Good Samaritan' laws that protect people who give reasonable assistance to those who are injured or ill.
中文： 在許多英語系國家，撥打急救電話（美國為 911，英國為 999，澳洲為 000）是緊急情況下第一步也是最關鍵的一步。此外，還有「好撒馬利亞人法」(Good Samaritan laws)，旨在保護那些對傷病者提供合理援助的施救者。
EN： The modal verb 'should' is used to give advice or express an obligation. It is followed by the base form of the verb (take).
中文： 情态动词 'should' 用于提出建议或表达义务。其后接动词原形 (take)。
You should drink more water every day.
你每天应该多喝水。
EN： The phrase 'take the time to [verb]' means to spend the necessary amount of time to complete an action, often implying that the action is worthwhile.
中文： 短语 'take the time to [动词]' 意思是花必要的具体时间去做某事，通常暗示做这件事是值得的。
He took the time to explain the rules to me.
他抽出时间向我解释了规则。
EN： In many Western cultures, there is a strong emphasis on civic duty and the 'Good Samaritan' principle, where individuals are encouraged to learn basic medical skills to help others in public spaces before professional help arrives.
中文： 在許多西方文化中，非常強調公民責任和「好撒馬利亞人」原則，鼓勵個人學習基本的醫療技能，以便在專業救援到達前，在公共場所幫助他人。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 突发且危险的情况，需要立即采取行动。
在本文中： 绝对必要或极其重要的。
在本文中： 清醒的，有意识的。
在本文中： 立刻，毫不延误地。
在本文中： 使人恢复呼吸或心跳的急救行为（复苏）。
在本文中： 执行或进行某项任务或动作。
在本文中： 伤口被细菌或病毒感染。
在本文中： 为了特定目的而成立的组织或机构。
片语包含类型标示、双语定义、用法说明和例句。
Emergency care or treatment given to an ill or injured person before regular medical aid can be obtained.
急救
To demand or request something, especially publicly or in an emergency.
呼叫；要求
To remain quiet and relaxed, especially in a difficult or frightening situation.
保持冷静
To have a significant effect on a person or situation.
产生影响；起到作用
The part of the palm that is closest to the wrist.
手掌根部
The act of blowing air into the mouth or nose of a person who has stopped breathing.
人工呼吸
The act of putting a medical dressing or covering onto a wound.
包扎绷带
Public organizations that respond to emergencies, such as the police, fire department, and ambulance services.
紧急救援服务（如 119/110 系统）