it is句型练习

注：1、去掉“it is / was 及关联词”，在不加词、减

词的情况下能重新排列成一个完整的句子，则是强调句型。引导词用that .

2、如不是强调句型，则分析表时间的短语是段

时间还是点时间，如是段时间，则看从句发生的动作在该时间之前还是之后，之前用

since , 之后用before . 如是点时间，则用

when .

3、如能构成“not---until” 结构, 则用until . 1. It was about 600 years ago ____ the first clock

with a face and an hour hand was made .

A. that B. until C. before D. when

2. It was not _____ about 600 years ago that the

first clock with a face and an hour hand was made .

A. that B. until C. before D. when

1

3. It was about 600 years ______ the first clock with

a face and an hour hand was made .

A. that B. until C. before D. when

4. It is about 600 years ____ the first clock with a

face and an hour hand was made .

A. that B. until C. before D. since

5. It won’t be long ___you regret what you’ve done . A. after B. before C. since D. when

6. It is almost three years _____ I last saw you . A. since B. when C. that D. after

7. It is for five years _____ I haven’t heard from

him .

A. since B. that C. when D. until

8. It was two hours _____ I got to sleep again .

A. when B. that C. until D. before

2

9. It was May 4 ______ my parents left for

Beijing .

A. since B. that C. when D. until

10. Was it ______ Tom’s carelessness _____ your

keys were all lost ?

A. because ; which B. for ; what C. because of ; that D. since ; /

th

3