8. 正確理解和運用過去完成時的關鍵是什么

He asked me to have a drink with him. I said that it was at least ten years since I ______ a good drink.

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

此題應選A。容易誤選C。本題主要考察過去完成時的基本用法(過去完成時是各類考試的常考考點), 此用法的關鍵是要正確理解“過去的過去”這五個字，也就是說：過去完成時是一個相對時態, 它必須以一個過去時間作參照, 而這個過去完成時所表示的動作要發生在這個過去時間的過去。做這類題時, 考生一定要注意一定的上下文, 要注意尋找直接或間接的過去參照時間：

1. He was disappointed that most of the guests___ when he ____ at the party.

A. left; had arrived                                     B. left; arrived

C. had left; had arrived                               D. had left; arrived

2. The students _____ busily when Miss Brown went to get a book she _____ in the office.

A. had written;left                                      B. were writing;has left

C. had written;had left                               D. were writing;had left

3. Helen _____ her keys in the office so she had to wait until her husband _____ home.

A. has left;comes                                       B. left; had come

C. had left;came                                        D. had left; would come

答案：1. D 2. D 3. C

9. This is the first time后的從句通常用什么時態

—Do you know our town at all?

—No, this is the first time I ______ here.

A. was                      B. have been            C. came                   D. am coming

此題應選B。這與句中的this is the first time有關：一般說來, 在It [This] is the first time＋that-結構中, that-從句通常用現在完成時(www.hz123456.com)：

It’s the first time (that) the boy has spoken toa foreigner. 這個男孩還是第一次同外國人說話。

It’s the first time that she’s seen an elephant. 這是她第一次見到大象。

有時以上結構中的first也可換成second, third, fourth等；其中的time也可換成其它名詞：

It’s the first month that he has lived here. 這是他第一個月住在這里。

This is the second cigarette that he has smokedtoday. 這是他今天抽的第二支煙。

若It was the first time that-結構中, that-從句通常用過去完成時, 有時也用一般過去時, 有時若有包括現在在內的時間狀語, 偶爾還可用現在完成時：

I was lucky because that was the second time I(had) visited Japan that year. 我很幸運, 那是我那年第二次訪問日本。

It was the first time this year that he hadn’t[hasn’t] worked on a Saturday. 這是今年來他第一次在星期六不上班。

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