Unit4Teenagers should be allowed to choose their own clothes被动语态语态：表示主语和谓语动词之间的关系。语态：表示主语和谓语动词之间的关系。英语有两种语态，即主动语态和被动语态。英语有两种语态，即主动语态和被动语态。 主动语态：表示主语是动作的执行者。被动语态：表示主语是动作的承受者。如：Many students study English.( 主动语态 ) English is studied by many students. ( 被动语态 )语态语态被动语态的结构 助动词 be+ 过去分词 (be + done)by many students.1.Many students study English.English is studied2.They make shoes in that factory.Shoes are made by themin that factory.1. 一般现在时的被动语态结构： is/are+ 过去分词• They play football on Sunday.• Lucy does the homework in the evening.• They often use computers in class.• We make these machines in Beijing.Football is played by them on Sunday.The homework is done by Lucy in the evening.Computers are often used by them in class.These machines are made in Beijing.1. They bought a computer last term ． by them last term.2. 一般过去时的被动语态结构：was/were + 过去分词last year.2.We planted many trees last year.2.We planted many trees last year.Many trees were plantedA computerwas bought• They built the tall building last year.• He took good care of his little brother yesterday.• We cleaned our classroom just now.• They used the rooms for resting.The tall building was built by them last year.His little brother was taken good care of by him yesterday.Our classroom was cleaned by us just now.The rooms were used for resting by them.3. 一般将来时的被动语态结构： be going to be/will be+ 过去分词1.They will finish the work in ten days.by them in ten days.The workwill be finished2.Tom is going to clean the room tomorrow.The room is going to be cleanedby Tom tomorrow.• We will hold a sports meeti...
