2、_____are the boys doing ? They are singing in the room.

A .Who　　　　 B .How　　　　　 C.What　　　　 D.Where

1、 Look! He _____their mother do the housework.

A. is helping　　 B. are help　　 C. is help　　 D.is helpping

1 When I returned home, he _____ (leave).

2 By ten yesterday evening, she ________(finish)writing.

3 He ______ (study) English for five years before he came here.

4 It ____　 _____ (stop) raining when I wake up this morning.

5 I _____ (not read) the book because I had read it before.

6 She said she____ (be) born in 1992.

7 When he _____(come) to China two years ago he found people didn't understand him at all though he ________(learn) some Chinese in his own country.

8 I saw Han Mei yesterday. We _____(not see) each other since left Beijing.

9 When I got to his home, he_____(go) to bed.

10 She asked if Mr. Liu _____ already _____(come) back.

　答案：1 had left　 2 had finished　 3 had studied　 4 had stopped　 5 didn't read

　　　 6 was　　 7 came　 had learned　 8 hadn't seen　　 9 had gone　

　　　 10 had come

1 When Li Ming hurried home, he found that his mother ____already____to hospital.

　A has; been sent　 B had; sent　 C has; sent　 D had; been sent

2 We ____five English songs by the end of last term.

　A had learned　 B　 learned　 C have learned　 D will have learned

3 Han Mei told me she _____lunch, so she was very hungry.

　A has had　 B hasn't have　 C have had　 D hadn't had

4 By the end of 1976, many buildings _____built in the city.

　A have been　 B have　 C had been　 D will

5 She _____her keys in the office so she had to wait until her husband ____home.

　A has left; comes　 B had left; would come　 C had left; came　 D left; had come

6 He said that it was at least ten years since I _____a good drink.

　A had enjoyed　 B was enjoying　 C have enjoyed　 D have been enjoying

7 The meeting _____when Mr. Wang _____to school.

　A has begun; get　 B has been on; get　 C had begun; got　 D had been on; got

答案：1D　 2 A　 3 D　 4 C　 5 C　 6 A　 7 C　

　例：She lived (live) in New York for eight years before he came to China.

　 答案：had lived

　解析：一般过去时表示过去发生的动作或存在的状态。 而过去完成时主要体现过去发生的两动作先后有别，即比过去发生的某动作还要“过去”，两动作中先发生的是过去完成时，后发生的则只用一般过去时。

专项练习：

　例：He asked what I have (have) said.

　 答案：had

　解析：现在完成时强调对现在的影响或结果．而过去完成时强调对过去的影响或结果．

　例：He hads (have) gone home when I got to his office.

　 答案：had

　解析：have/has 的过去式都为had, had 在过去完成时中也是助动词, 不能再有单三人称的变化.

　例：I'll go with you when I finish(finish) my homework.

　　 答案：have finished

　　 解析：在条件、时间状语从句中表示将来完成的动作，用现在完成时。但注意，此时表示这动作将在另一动作之前完成，若两动作同时发生，或几乎同时发生，则一般不用现在完成时。

　　 另外，现在完成时易与一般过去时弄混，前边已经讲过,这里不在重复．

　　 例：I have already finished my homework.(变一般疑问句)

　　　　 Have you already finished your homework?

　　 答案： Have you finished your homework yet?

　　 解析：现在完成时态中，肯定句中有already，变否定句或疑问句时通常要改为yet．

　　 例：我去过北京。

　　 I have gone to Beijing.

　　 答案：I have been to Beijing.

　　 解析："have been to+地点" 是表示曾去过某地，但此刻不在那儿(即在说话的地方)。而"have gone to+地点" 是表示去某地了，此刻在路上或已经到了那个地方(即不在说话的地方)。注意：这两个句式后接副词时，需省to。E.g. He has gone there.