2、被动语态八种时态的用法例句:被动语态常用的八种时态的基本用法和主动语态各时态的

基本用法相同，只是句中的主语不是动作的执行者，而是动作的承受者，如:(1)一般现在时：Now English is taught in all middle schools in our country. (2)一般过去时：The Great hall of the People was built in 1959. (3)一般将来时: When will the work be finished? (4)过去将来时：He told us that the work would be finished the next day. (5)现在进行时：

Your tractor is being repaired now.(6)过去进行时：The child was being examined by the doctor when they came in. (7)现在完成时：The work hasn’t been finished yet. (8)过去完成:The new plan had been carried out before the second experiment began.

1、被动语态各时态的形式是由助动词be的各时态的形式加及物动词的过去分词构成。

2、如果主句中的谓语动词为过去时态，从句中的谓语动词就要用过去时态，但要注意到下列情况：(1)如果从句中的谓语动词所表示的动作与主句中的谓语动词所表示的动作同时发生，从句中须用一般过去时或过去进行时，如：She said she was busy then. (2)如果从句中的谓语动词所表示的动作发生在主句谓语动词所表示的动作之前，从句中须用过去完成时，如：I didn’t know that she had been to London twice. (3)如果从句中的谓语动词所表示的动作发生在主句谓语动词所表示的动作之后，从句须用过去将来时，如：They didn’t know when they would have a rest. (4)如果从句中说明的是一种普遍真理现象，虽然主句的谓语动词为过去时态从句中仍要用一般现在时，如：When I was a little child, my father told me that the earth is round. (5)如果从句中有表示具体过去时间的状语，虽然其谓语动词所表示的动作发生在主句谓语动词所表示的动作之前，从句仍用一般过去时，但如果该状语表示的时间不具体，则从句仍要用过去完成时，如：Tome said he was born in 1975.

1、如果主句的谓语动词为现在时态，其从句中的谓语动词应该用什么时态就用什么时态，如：She knows you have been in Beijing for five rears.

52. This liquid _____ the salt at room temperature.

　　　 A. became mixed with　　　　　　　　　　　　 B. was mixed by

　　　 C. mixes with　　　　　　　　　　　　　　　　　　 D. has been mixing by

动词时态和语态(2)

51. She had a shock when she heard the news, _____?

　　　 A. hadn’t she　　　　 B. didn’t she　　　　　 C. wouldn’t she　　　 D. won’t she

50. It’s a nice flat, but it _____ a proper bathroom.

　　　 A. haven’t got　　　　 B. hasn’t got　　　　　 C. wouldn’t get　　　 D. doesn’t have got

49. “Come on, Peter, I want to show you something.”

　　　 “Oh, how nice of you, I _____ you _____ to bring me a gift.”

　　　 A. never think/are going　　　　　　　　　　　　　　 B. never thought/ were going

　　　 C. didn’t think/ are going　　　　　　　　　　 D. hadn’t thought/ were going

48. I _____ that he would be able to leave tomorrow, but it's beginning to look diffcult.

　　　 A. hope　　　　　　　　 B. had hoped　　　　 C. hoped　　　　　　　 D. am hoping

47. How much do you think that vase _____?

A. is cost 　　　　　　 B. used 　　　　　　　　 C. was paid for 　　　　　　 D. cost