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The work should be done carefully.
5. We heard them sing in the next room.
They were heard to sing (by us) in the next room.
1.被动语态的构成及意义:
何时使用
变化方法
注意事项
复习目标：
2.重点：
3.难点：几种特殊情况被动语态的变化
1.Tom gave me a book. (双宾语，人间物直，me为间接宾语，a?book?为直接宾语)
I _____________ ?a?book?by?(Tom.)
A?book? _____________ ? me?by?Vivian.
2.Tom’s father bought him a book.
He _____________ a book (by his father).
A book _________ him (by his father).
1.带双宾语的句子有两种改法:
was bought
was bought for
几种特殊情况被动语态的变化
was given
was given to
注意：一般情况下把间接宾语指人的作为被动句的主语.当把直接宾语指物的作为主语时，要加介词to,for.
2.含有感官动词(hear, see, watch, feel, notice等)和使役动词(let ,make have等)的被动语态：
主: They made the boys work 10 hours a day.
被： The boys were made ____ 12 hours a day.
主：We often see the old man run in the morning.
被：The old man is often seen ___ in the moring.
to work
to run