新概念第二册21课被动语态.ppt

 二.模仿上列句子连词成句 肯定句，否定句及疑问句如下。 Read text-2 Article1_popwin_title 过去 时,含情态动词的被动语态 A man killed Jack. → Han Mei found Granny’ books. → They built the bridge. → He can answer the question. → We must plant trees in spring. → Nurse should take care of the children. → 主动语态变为被动语态时注意 含直接宾语和间接宾语的主动语态变为被动语态时有两种情况: Eg He gave the boy an apple. → (1)把间接宾语改为主语,直接宾语保留不变: The boy was given an apple (2)把直接宾语改为主语,此时,间接宾语前要 加to或for. An apple was given to the boy. (give, pass, show, send to ) (buy, draw, make, for ) 3.短语动词是不可分割的整体,改为被动语态时要保持其完整性,介词或副词不可遗漏. We must take good care of the young trees. → Young trees must be taken good care of. 4. 带复合宾语的动词改为被动语态时,一般把主动语态的宾语改为主语,宾语补足语在被动语态中作主语补足语. He cut his hair short. → His hair was cut short. They told him to help me. → He was told to help me. 5. 注意: 不及物动词不能用被动语态happen ,take place, appear take care of / look after / take off / look at / send for / look up 3 某些动词表被动含义如 weigh / measure / cost / last / break out / take place /happen The meeting lasted two hours . 4 get / come / go + P.P 表示被动含义 用来强调动作结果或表示出乎意料的偶然事件. come / go 常与否定连用 They got delayed because of the holiday traffic . The woman’s complaints went unnoticed. 5 在 need / want / require / deserve + doing 句型中,动名词表示被动. The garden needs watering = The garden needs to be watered . 6 有些动词的不定式( blame / let / rent 用主动表被动 Nobody was to blame for the accident . The house is to let . 7一些介词短语用作定语或表语时表被动 The thief was under arrest . Apples are on sale . 将下列句子改为被动语态： We often use a recorder in our English class. The parents found the boy in the street. 3. We must clean the blackboard. 4. I saw her reading a book hours ago. 6.Someone has stolen my bike. They are building a house. My family will buy a computer next week. （二） I often buy Mother something. My brother gave me a book. We can hear her sing this song. The boy’s words made us laugh. 4. She should look up the new w