4.Students should write something in the library.(改为被动语态)　

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3.were,they,by,invented,Julie Thompson(连词成句)　

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2.They were invented last year.(就画线部分提问)　

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(按照要求改写句子。)　

1.Thomas Edison invented the light bulb.(改为被动语态)　

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10.-It’s time to go to bed,Li Ming.　

-Mum,I have a lot of homework to do,I won’t go to bed________I finish it.　

A.after　　　　　 B.until　　　　　 C.as soon as　　　　　 D.since　

答案：B　根据题意可知:“睡觉”应发生在“做完”之后。not... until ...意思是“直到……才……”。

●Sentence structure training　

(句子结构专练)

9.-Did you notice him come in?　

-No.I__________a football game.　

A.have watched　　　 B.had watched

C.am watching　　 D.was watching　

答案：D　根据句意可判断:当时我没有注意到是因为我“正在看”球赛，应用过去进行时。　

8.There was an important meeting last night.Mr.Smith __________to it.　

A.was invited　　　 B.invited

C.is invited　　　　 D.invites　

答案：A　根据主语与动词的关系以及时间状语判断:应用被动结构的一般过去时。　

7.-Your city looks beautiful!　

-Yes.Lots of trees and grass__________last year.　

A.are planted 　　　　　　　 B.have planted

C.were planting 　　 D.were planted 　

答案：D　根据主语与动词的关系以及时间状语判断:应用被动结构的一般过去时。　

6. __________ him without informing ahead gave him much surprise.　

A.To visit　　　　　　　　　　 B.Visiting

C.Visited　　　　　　　 D.Visit　

答案：B　本题考查动名词词组用作主语的用法。　

5.He was sent into hospital because of__________by a car.　

A.knocked into　　　　　　 B.knocking down　

C.being knocked into　　 D.being knock down　

答案：C　“被撞倒”可表达为be knocked into/down,因空格前为介词of,所以要用其被动语态的动名词形式。