EN： The passive voice is used when the focus is on the action or the receiver of the action, rather than the doer. It is formed using 'be' + past participle (V3). In this sentence, 'was invented' is the past passive voice, indicating that the invention of the telephone happened in the past.
中文： 被动语态（Passive Voice）用于当焦点放在动作本身或动作的接受者，而非执行者时。其结构为“be 动词 + 过去分词 (V3)”。在本句中，“was invented”是过去简单式的被动语态，表示电话在过去某个时间点被发明。
The light bulb was invented by Edison.
电灯泡是由爱迪生发明的。
EN： The phrase 'long ago' is an adverbial phrase of time used to refer to a period far back in the past. It is commonly used with the past simple tense.
中文： “long ago”是一个表示时间的副词短语，用来指代很久以前的过去。它通常与过去简单式连用。
Dinosaurs lived on Earth long ago.
恐龙在很久以前生活在地球上。
EN： The invention of the telephone is traditionally credited to Alexander Graham Bell in 1876. This historical milestone revolutionized global communication, paving the way for the modern connected world.
中文： 電話的發明傳統上歸功於亞歷山大·格拉漢姆·貝爾（Alexander Graham Bell）於 1876 年的發明。這一歷史性的里程碑徹底改變了全球通訊，為現代互聯世界奠定了基礎。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'is made' is the present simple passive form.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，“is made”是现在简单式的被动语态形式。
The house is painted every year.
这栋房子每年都会被粉刷。
EN： The prepositional phrase 'made from' is used when the original raw material undergoes a chemical or physical transformation and is no longer easily recognizable in the final product (e.g., wood becoming paper). This contrasts with 'made of', which is used when the basic material remains recognizable (e.g., a table made of wood).
中文： 介词短语“made from”用于原料经历了化学或物理变化，且在成品中不再容易辨认的情况（例如：木头制成纸张）。这与“made of”不同，“made of”用于原料在成品中依然清晰可辨的情况（例如：木头制成的桌子）。
Cheese is made from milk.
奶酪是由牛奶制成的。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'was designed' is the past passive form, showing that the bridge received the action of designing.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，“was designed”是过去被动式，表示这座桥接受了“设计”这个动作。
The book was written by a local author.
这本书是由一位当地作家写的。
EN： The preposition 'by' is used in passive sentences to introduce the agent (the person or thing that performs the action).
中文： 介词“by”在被动语态句子中用来引出行为者（执行该动作的人或事物）。
The cake was made by my sister.
这个蛋糕是我姐姐做的。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'is made' is the present simple passive form.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，“is made”是现在简单式的被动语态形式。
This book is written in simple English.
这本书是用简单的英文写成的。
EN： The prepositional phrase 'made from' is used when the original raw material undergoes a chemical or physical change to become the final product, making it unrecognizable in its original form.
中文： 介词短语“made from”（由……制成）用于原料在制作过程中经历了化学或物理变化，导致在成品中无法辨认出其原始形态的情况。
Paper is made from wood.
纸是由木头制成的。
EN： The passive voice is used when the focus is on the action or the receiver of the action, rather than the doer. It is formed using 'be' + past participle (V3). In this sentence, 'was built' is the past simple passive form.
中文： 被动语态（Passive Voice）用于当焦点在于动作本身或动作的接受者，而非执行者时。其结构为“be 动词 + 过去分词 (V3)”。在本句中，“was built”是过去简单式的被动语态形式。
The telephone was invented long ago.
电话是在很久以前被发明的。
EN： The phrase 'over a century ago' uses 'over' to mean 'more than', and 'ago' to indicate a specific point in the past relative to the present. It is commonly used with the past simple tense.
中文： 短语“over a century ago”中，“over”表示“超过（more than）”，而“ago”则用来表示相对于现在的过去某个特定时间点。此结构通常与过去简单式连用。
The school was founded over a decade ago.
这所学校是在十多年前创立的。
EN： The Present Simple Passive Voice is used to describe facts, general truths, or regular actions where the focus is on the action or the receiver of the action, rather than the doer. It is formed using 'am/is/are' followed by the past participle (V3) of the main verb.
中文： 现在简单时的被动语态（Present Simple Passive Voice）用于描述事实、普遍真理或规律发生的动作，此时焦点在于动作本身或接受动作的人事物，而非执行者。其结构为「am/is/are + 过去分词 (V3)」。
Many books are printed in this city.
许多书是在这座城市印刷的。
EN： The demonstrative adjective 'these' is used before plural nouns ('toys') to point to things that are close to the speaker in distance or time.
中文： 指示形容词「these」（这些）用于复数名词（如 toys）之前，用来指代在空间或时间上距离说话者较近的人事物。
These shirts were sewn by local workers.
这些衬衫是由当地的工人们缝制的。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'was invented' is the past passive form, indicating that the action happened in the past.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，“was invented”是过去被动式，表示该动作发生在过去。
The telephone was invented by Alexander Graham Bell.
电话是由亚历山大·格拉汉姆·贝尔发明的。
EN： The preposition 'by' is used in passive sentences to introduce the agent—the person or thing that performs the action.
中文： 介词“by”在被动语态句子中用来引介施动者（即执行该动作的人或事物）。
This beautiful song was written by a young artist.
这首优美的歌曲是由一位年轻艺术家创作的。
EN： Thomas Edison is historically credited with inventing the practical incandescent light bulb, a milestone of the Industrial Revolution that fundamentally changed modern society and work patterns.
中文： 湯瑪斯·愛迪生在歷史上被歸功於發明了實用的白熾電燈泡，這是工業革命的一個里程碑，從根本上改變了現代社會和工作模式。
EN： The passive voice is used when the focus is on the action or the receiver of the action, rather than the doer. It is formed using 'be + past participle' (is grown). Here, 'rice' is the receiver of the action 'grow'.
中文： 被动语态（Passive Voice）用于当焦点在于动作本身或动作的接受者，而非执行者时。其结构为“be 动词 + 过去分词”（is grown）。在此句中，“rice”（稻米）是动作“grow”（种植）的接受者。
Wheat is grown in many European countries.
许多欧洲国家都种植小麦。
EN： The preposition 'in' is used before large geographical areas such as countries, continents, or regions (e.g., 'in many parts of Asia').
中文： 介词“in”用于国家、洲或区域等大型地理区域之前（例如“in many parts of Asia”，在亚洲的许多地方）。
Pandas live in certain parts of China.
大熊猫生活在中国的一些地区。
EN： Rice is the primary staple food for more than half of the world's population, particularly in Asia, where its cultivation has shaped the landscape, economy, and social structures for thousands of years.
中文： 稻米是世界上超過一半人口（尤其是在亞洲）的主要糧食作物。數千年來，稻作農業形塑了亞洲的自然景觀、經濟模式以及社會結構。
EN： The passive voice is used when the focus is on the action or the receiver of the action, rather than the doer. It is formed using 'be' + past participle (V3). In this sentence, 'was created' is the past simple passive voice.
中文： 被动语态（Passive Voice）用于当焦点放在动作本身或动作的接受者，而非执行者时。其结构为“be 动词 + 过去分词 (V3)”。在本句中，“was created”是过去简单式的被动语态。
The temple was built in the 18th century.
这座寺庙建于 18 世纪。
EN： The phrase 'hundreds of' is used to express an indefinite large number, meaning several hundred. It is always followed by a plural noun (e.g., 'hundreds of years', 'hundreds of people').
中文： 短语“hundreds of”（数以百计的）用于表达不确定的大数量，意为数百个。后面必须接复数名词（例如：“数百年前”、“数百人”）。
Hundreds of birds fly south for the winter.
数以百计的鸟类飞往南方过冬。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'is made' is the present simple passive form, indicating a general fact.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，「is made」是现在简单时的被动形式，用来表示一个普遍的事实。
Paper is made from wood.
纸是由木头制成的。
EN： The prepositional phrase 'made from' is used when the original raw material undergoes a chemical or physical transformation, changing its form completely so that it is no longer recognizable in the final product.
中文： 介词短语「made from」（由……制成）用于原料经历了化学或物理变化，完全改变了其原始形态，在成品中已无法辨认的情况。
Cheese is made from milk.
奶酪是由牛奶制成的。
EN： The passive voice is used when the focus is on the action or the receiver of the action (this song), rather than the doer. It is formed with 'be' + past participle (written). The agent (the doer) is introduced with the preposition 'by'.
中文： 被动语态（Passive Voice）用于当焦点在于动作本身或接受动作的人事物（这首歌），而非执行者时。其结构为“be 动词 + 过去分词（written）”。执行者则由介词“by”引导。
The novel was written by a famous author.
这部小说是由一位著名的作家写的。
EN： The past participle 'written' is the irregular past participle form of the verb 'write' (write - wrote - written). It is used here after the auxiliary verb 'was' to form the past simple passive.
中文： 过去分词“written”是动词“write”的不规则过去分词形式（write - wrote - written）。在此处接在助动词“was”之后，用以构成一般过去时的被动语态。
The letter was written in English.
这封信是用英文写的。
EN： The Present Simple Passive Voice is used to describe general truths, facts, or regular occurrences where the focus is on the action or the receiver of the action, rather than who performs it. It is formed using 'am/is/are + past participle (V3)'.
中文： 现在简单式的被动语态（Present Simple Passive Voice）用于描述普遍真理、事实或定期发生的事件。此时焦点在于动作本身或接受动作的对象，而非执行者。其结构为“am/is/are + 过去分词 (V3)”。
Many books are printed in this city.
许多书是在这座城市印刷的。
EN： The adverbial phrase 'every year' is used to express frequency, indicating that an action happens repeatedly on an annual basis. It is typically placed at the end of the sentence.
中文： 副词短语“every year”（每年）用于表示频率，指出某个动作每年都会重复发生。通常放在句尾。
EN： The sentence features a defining relative clause (adjective clause) 'we use every day' that modifies the noun phrase 'Many things'. The relative pronoun 'that' or 'which' is omitted because it functions as the direct object of the verb 'use'.
中文： 本句包含一个关系从句（形容词从句）「we use every day」，用来修饰名词短语「Many things」。这里省略了关系代词「that」或「which」，因为它在从句中担任动词「use」的直接宾语。
The books we read in childhood shape our minds.
我们童年时阅读的书籍塑造了我们的思想。
EN： The main verb of the sentence is in the present simple passive voice ('are made'). The passive voice is used here because the focus is on the action and the things being made, rather than who makes them.
中文： 本句的主要动词采用现在简单式的被动语态（are made）。这里使用被动语态是因为焦点在于动作本身以及被制造的事物，而非制造它们的人是谁。
These smartphones are designed in California.
这些智能手机是在加州设计的。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. Here, 'is made' focuses on the process of paper production.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在此处，'is made' 将焦点放在纸张制作的过程上。
This book was written by a famous author.
这本书是由一位著名的作家所撰写的。
EN： The prepositional phrase 'made from' is used to describe the raw materials that undergo a chemical or physical transformation to become the final product.
中文： 介词短语 'made from' 用于描述原料在制成成品时，经历了化学或物理性质的转变（看不出原本的样貌）。
Cheese is made from milk.
奶酪是由牛奶制成的。
EN： In English, abstract concepts like 'care' can be treated as 'ingredients' alongside physical materials (like trees and water) to add emotional depth or poetic value to a description, emphasizing the craftsmanship involved.
中文： 在英語中，像 'care'（用心/關懷）這樣的抽象概念可以與具體材料（如樹木和水）並列為「原料」，以此為描述增添情感深度或詩意，強調製作過程中所投入的匠心。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. Here, 'is created' and 'is heated' describe scientific processes where the agent is not specified.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在此处，“is created”（被创造）和“is heated”（被加热）描述了不需要指明执行者的科学过程。
Paper is made from wood.
纸张是由木头制成的。
EN： The subordinating conjunction 'when' is used to introduce an adverbial clause of time, indicating that one action or state occurs at the same time as, or immediately after, another.
中文： 从属连词“when”用于引导时间状语从句，表示一个动作或状态与另一个动作同时发生，或紧接其后发生。
Water boils when it is heated to 100 degrees Celsius.
当水被加热到摄氏100度时就会沸腾。
EN： The past simple passive voice is formed with 'was/were' + past participle. It is used when the focus is on the action or the receiver of the action, rather than the doer, and the action happened in the past.
中文： 过去简单式的被动语态由“was/were + 过去分词”构成。当焦点在于动作本身或动作的接受者，而非执行者，且动作发生在过去时，会使用此句型。
The light bulb was invented by Edison.
电灯泡是由爱迪生发明的。
EN： The phrase 'more than' is used as a modifier meaning 'over' or 'exceeding' a certain quantity or time period.
中文： 短语“more than”用作修饰语，表示“超过”或“多于”某个特定数量或时间段。
He lived in London for more than a decade.
他在伦敦住了十多年。
EN： The passive voice (be + past participle) is used here ('were built') to focus on the object of the action (cars) rather than the agent who built them.
中文： 此处使用被动语态（be 动词 + 过去分词“were built”），将焦点放在动作的承受者（汽车）而非制造汽车的人。
The bridge was designed by a famous engineer.
这座桥是由一位著名的工程师设计的。
EN： The infinitive of purpose ('to help') explains the reason for the action, followed by a bare infinitive ('travel') which is permitted after the verb 'help'.
中文： 不定式表示目的（“to help”说明制造汽车的目的），其后接原形动词（“travel”），这是动词“help”后面允许的用法。
She saved money to help her parents buy a house.
她存钱是为了帮助父母买房子。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'are used' emphasizes the function of the robots.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，「are used」（被使用）强调了机器人的功能。
English is spoken all over the world.
英文在全世界都被使用。
EN： The infinitive 'to make' is used here as an infinitive of purpose, explaining 'why' the robots are used.
中文： 不定词「to make」在此处作为表示目的的不定词，解释了「为什么」要使用机器人。
He saved money to buy a new computer.
他存钱是为了买一台新电脑。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than who performs it. In this sentence, 'is tested' and 'is sold' are both in the present simple passive.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，「is tested」（被测试）与「is sold」（被销售）皆为现在简单时的被动语态。
The new product is launched worldwide today.
这款新产品于今天在全球上市。
EN： The conjunction 'before' introduces an adverbial clause of time. In time clauses referring to the future or general truths, the simple present tense (here, 'is sold') is used instead of the future tense.
中文： 连接词「before」（在……之前）引导时间副词从句。在表示未来或普遍真理的时间从句中，须使用现在简单时（此处为「is sold」）来代替将来时。
Please turn off the lights before you leave.
离开前请先关灯。
EN： The Passive Voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'is provided' emphasizes that the water is being supplied, while the agent (who provides it) is omitted because it is obvious or unimportant.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，“is provided”（被提供）强调水被供应的过程，而执行者（提供水的人或机构）因显而易见或不重要而被省略。
Electricity is generated by wind turbines.
电力是由风力发电机产生的。
EN： The preposition 'through' is used to indicate the medium, means, or instrument by which something is achieved or moves from one end to another.
中文： 介词“through”用于表示达成某事或物体移动时所穿过的媒介、手段或工具（意为“透过”、“穿过”）。
Information is sent through the internet.
信息是通过网络传送的。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. In this sentence, 'is shaped' (present passive) shows that our world is the recipient of the shaping action.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在本句中，“is shaped”（现在式被动语态）表示我们的世界是“被塑造”的对象。
The technology is developed by a team of experts.
这项技术是由一个专家团队所研发的。
EN： The preposition 'by' is commonly used in passive sentences to introduce the agent (the person or thing that performs the action). Here, 'amazing human ideas' is the agent performing the shaping.
中文： 介词“by”在被动语态中常用于引介施动者（即执行该动作的人或物）。在此处，“amazing human ideas”（奇妙的人类创意）是进行塑造的施动者。
This beautiful song was written by a young artist.
这首优美的歌曲是由一位年轻艺术家所创作的。
EN： Passive Voice in Questions: The passive voice is used to focus on the action or the object receiving the action (paper) rather than who performs it. In a question, the auxiliary verb 'be' (is) is placed before the subject, followed by the past participle (made).
中文： 被动语态疑问句：被动语态用于将焦点放在动作或接受动作的客体（纸张）上，而非动作的执行者。在疑问句中，助动词「be」（is）会置于主语之前，后面接过去分词（made）。
How is bread made?
面包是如何制作的？
EN： Wh- Questions with 'How': 'How' is an interrogative adverb used to ask about the process, method, or manner in which something is done.
中文： 使用「How」的特殊疑问句：「How」是一个疑问副词，用于询问某事是如何被进行的过程、方法或方式。
How is this machine operated?
这台机器是如何操作的？
EN： In English-speaking classrooms and educational dialogues, addressing a student or peer by their first name (e.g., 'Emma') at the end of a question is a common way to personalize the interaction, show friendliness, and directly engage the listener.
中文： 在英語系的課堂和教學對話中，在問題末尾直接稱呼學生或同儕的名字（例如「艾瑪」）是一種很常見的方式。這能讓互動顯得更親切、友善，並能直接吸引聽者的注意力。
EN： The passive voice is used when the focus is on the action or the receiver of the action, rather than the doer. It is formed using 'be + past participle' (is made).
中文： 被动语态（Passive Voice）用于当焦点在于动作本身或动作的接受者，而非执行者时。其结构为「be 动词 + 过去分词」（is made）。
The house was built in 1990.
这栋房子建于1990年。
EN： The prepositional phrase 'made from' is used when the original raw material undergoes a chemical or physical transformation, changing its form so that it is no longer easily recognizable in the final product.
中文： 介词短语「made from」（由……制成）用于原料在制作过程中经历了化学或物理变化，其原始形态在成品中已不易辨认的情况。
Cheese is made from milk.
奶酪是由牛奶制成的。
EN： The sentence uses the Past Simple Passive Voice in a question format ('Was' + subject + past participle 'built'). The passive voice is used when the focus is on the action or the receiver of the action (the bridge), rather than who performed the action.
中文： 此句子使用了过去简单式的被动语态疑问句（Was + 主语 + 过去分词 built）。当我们想把焦点放在动作本身或接受动作的对象（桥），而非执行动作的人时，就会使用被动语态。
Was the letter written yesterday?
这封信是昨天写的吗？
EN： The phrase 'a long time ago' is a common temporal adverbial phrase used with the past simple tense to indicate that an event occurred in the distant past.
中文： 短语“a long time ago”（很久以前）是常见的时间副词短语，常与过去简单式连用，表示某个事件发生在遥远的过去。
They moved to New York a long time ago.
他们很久以前就搬到纽约了。
EN： The passive voice in the past tense is formed using 'was/were' followed by the past participle of the main verb. It is used when the action itself or the receiver of the action is more important than the doer.
中文： 过去式被动语态的结构为“was/were + 过去分词 (p.p.)”。当动作本身或动作的接受者比执行者更重要，或者执行者不明时，常使用此句型。
The house was built in 1990.
这栋房子建于 1990 年。
EN： The word 'ago' is a temporal adverb used after a measurement of time (e.g., fifty years) to show how far back in the past something happened from the present moment.
中文： 时间副词“ago”（……以前）必须放在时间长度（例如：fifty years）的后面，用来表示从现在算起，该动作发生在多久以前的过去。
EN： Passive Voice in Yes/No Questions: To form a question in the passive voice, the auxiliary verb 'be' (am/is/are/was/were) is placed before the subject, followed by the past participle of the main verb.
中文： 被动语态的 Yes/No 疑问句：要形成被动语态的疑问句，需将助动词「be 动词」（am/is/are/was/were）置于主语之前，后面接主要动词的过去分词（past participle）。
Is this book written by a famous author?
这本书是一位著名作家写的吗？
EN： Preposition 'from' with 'made': 'Made from' is used when the original raw material undergoes a chemical or physical transformation, changing its form completely so that it is no longer easily recognizable (e.g., cocoa beans into chocolate).
中文： 介词「from」与「made」的搭配：「made from」用于表示原料经历了化学或物理变化，完全改变了其原始形态，使其不再容易被辨认（例如：可可豆制成巧克力）。
Paper is made from wood.
纸是由木头制成的。
EN： The passive voice (be + past participle) is used when the focus is on the action or the receiver of the action, rather than the doer. Here, 'is made' indicates that the subject 'it' (chocolate) undergoes the process of creation.
中文： 被动语态（be 动词 + 过去分词）用于当焦点在于动作本身或动作的接受者，而非执行者时。在这里，「is made」表示主语「it」（巧克力）经历了被制造的过程。
This book is written in simple English.
这本书是用简单的英文写成的。
EN： The prepositional phrase 'made from' is used when the original raw material undergoes a chemical or physical transformation, changing its form completely so that it is no longer easily recognizable in the final product.
中文： 介词短语「made from」用于原料经历了化学或物理变化，完全改变了其原本的形态，使得在成品中不易直接辨认出原貌的情况。
Paper is made from wood.
纸是由木材制成的。
EN： Passive Voice in Past Simple Tense: The passive voice is used when the focus is on the action or the receiver of the action (these shirts), rather than the doer. It is formed with 'was/were' + past participle (sewn). The agent (local workers) is introduced with the preposition 'by'.
中文： 过去简单式的被动语态：被动语态用于当焦点在于动作本身或动作的接受者（这些衬衫），而非执行者时。其结构为“was/were + 过去分词 (sewn)”。执行动作的主体（当地的工人们）则由介词“by”引导。
The letters were written by the manager.
这些信件是由经理写的。
EN： Irregular Past Participle 'sewn': The verb 'sew' is irregular. Its past tense is 'sewed', but its past participle is 'sewn' (or sometimes 'sewed'). In passive constructions, the past participle form is required.
中文： 不规则过去分词“sewn”：动词“sew”（缝制）是不规则动词。其过去式为“sewed”，但过去分词为“sewn”（有时亦可用 sewed）。在被动结构中，必须使用过去分词形式。
This quilt was sewn by my grandmother.
这件被子是我祖母缝制的。
EN： The passive voice in the past tense is formed using 'was/were' followed by the past participle of the main verb. It is used when the action itself or the receiver of the action is more important than the doer, or when the doer is unknown.
中文： 过去式被动语态的结构为“was/were + 过去分词（p.p.）”。当动作本身或动作的接受者比执行者更重要，或者执行者未知时，会使用此句型。
The library was built in 1990.
这间图书馆建于 1990 年。
EN： 'Last month' is a past time expression used as an adverbial modifier to specify when an action occurred. It does not require a preposition like 'in' or 'on' before it.
中文： “last month”（上个月）是过去时间副词短语，用作修饰语以明确指出动作发生的时间。其前面不需要加上 'in' 或 'on' 等介词。
EN： Present Simple Passive Voice: Used to describe actions where the focus is on the action itself or the receiver of the action, rather than the doer. It is formed using 'am/is/are' + past participle (V3).
中文： 现在简单时的被动语态：用于强调动作本身或动作的接受者，而非执行者。其结构为「am/is/are + 过去分词 (V3)」。
Many cars are made in this factory.
许多汽车是在这家工厂制造的。
EN： Prepositional Phrase of Place: 'in this city' acts as an adverbial phrase of place, indicating where the action of printing occurs. 'In' is used for large, enclosed areas like cities or countries.
中文： 地方介词短语：「in this city」作为地方副词短语，指出印刷动作发生的地点。介词「in」用于城市或国家等较大且具范围的空间。
EN： The passive voice is used to focus on the person or thing affected by an action, rather than the one performing it. It is formed using 'be' + past participle (V3). In this sentence, 'are created' is the present simple passive voice.
中文： 被动语态（Passive Voice）用于将焦点放在承受动作的人或事物上，而非执行动作的主体。其结构为“be 动词 + 过去分词 (V3)”。在本句中，“are created”为现在简单式的被动语态。
Many beautiful songs are written by this musician.
许多优美的歌曲都是由这位音乐家所创作的。
EN： The preposition 'by' is used in passive sentences to introduce the agent—the person or thing that performs the action.
中文： 介词“by”在被动句中用于引介“施动者”（即执行该动作的人或事物）。
The cake was made by my sister.
这个蛋糕是我姐姐做的。
重要单词附有 IPA 发音、定义、例句和互动式测验。
在本文中： 发明、创造（新事物或新方法）
在本文中： 工程师，设计、建造或维护机器、结构等专业人员
在本文中： 生产、制造（尤指在工厂中大量制造）
在本文中： 聪明的、巧妙的、有创意的
在本文中： 机器人，能自动执行复杂动作的机器
在本文中： 药物、药剂
在本文中： 塑造、决定…的发展
在本文中： 缝制、缝合（sew 的过去分词）
片语包含类型标示、双语定义、用法说明和例句。
Manufactured or produced using a particular raw material, where the original material undergoes a chemical or physical transformation.
由…制成（原料本质已改变）
One hundred years in the past.
一个世纪前、百年前
Far back in the past; many years prior.
很久以前