I. 填入适当的引导词
1. I haven't heard from him _____ he went to America.
2. He won't be here _____ he is invited.
3. He will not go to the cinema _____ he is very busy.
4. We found the key _____ she had left it.
5. We found the books two days ____ he had gone away.
6. We had no sooner got to the station _____ the train left.
7. He speaks English ______ he were an Englishman.
8. He is explaining clearly _______ they could understand.
9. Do not leave the room _____ you have finished the test.
10. She sang ______ she went along.
II. 改错
1. The children were running on the playground as fast as they can.
2. Since her husband had died，so she had to support
3. He won't go out until his mother will come.
4. He was very foolish that he didn't pass such an easy exam.
5. Tom had gone out as soon as his mother got home.
6. It was three months since he came to our school.
7. The playground of our school is larger than their school.
8. The streets in Nanjing are wider than Shanghai.
9. Whatever there is plenty of sun and rain，the fields are green.
10. She sings songs as if she is a bird.
III. 找出从句并指出是那类从句
1. It depends on whether we have enough time.
2. The question he asked was where the electrical equipment should be stored.
3. The mountain is no longer what it used to be.
4. The fact that she works hard is well known to us all.
5. He was not the man that he was before.
6. Now you was free，why not go swimming with us？
7. Where there are schools and colleges，there are examinations.
8. Bad habits，once firmed，are difficult to give up.
9. She often wears the same kind of skirt as her twin sister does.
10. The moment he opened the window，a bird flew in.
IV. 填入适当的引导词完成句子
1. ____ will do the experiment comes to the professor's office.
2. ___ will do the experiment hasn't been decided.
3. The teacher didn't leave ______ twelve o'clock.
4. ______ the day went on，the weather got worse.
5. _____ she is young，she knows quite a lot.
6. It worried her a bit ____ her hair was turning grey.
7. You will be late ____ you leave immediately.
8. Go and get your coat. It's ______ you left it.
9. ______ is mentioned above，the number of the students in senior high schools is increasing.
10. ____ had I entered the room ____ the phone rang.
V. 改错
1. Is this the watch for which he is looking now？
2. This is all which I can do for you.
3. Do you know the old man at the back of the room，whom has been chosen head of the factory.
4. I want to know the way which you learn new words.
5. Can you tell me that there's a bookstore near here？
6. Our school quite different from that it was before.
7. If she likes the present is not clear to me.
8. For she is ill，she hasn't come to school.
9. It gave him so a big shock that his face turned pale.
10. He is cleverer than any boy in his class.
参考答案：
I、1. since 2. unless 3. because 4. where 5. after 6. than 7. as if 8. so that 9. before 10. as
II、1. can 改为could 2. 去掉so 3. will come改为 comes 4. very改为 so 5. as soon as 改为when 6. was 改为is 7. than 之后加上that of
III、1. whether we have enough time
2. he asked
3. what it used to be 表语从句
4. that she works hard
5. that he was before 定语从句
6. Now
7. Where there are schools and colleges
8. once firmed
9. as her twin sister does
10.
IV、1. Whoever 2. Who 3. until 4. As 5. Although 6. that 7. unless 8. where 9. As 10. Hardly，when （ No sooner，than ）
V、1. for
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