1. Tom was about to close the windows _____ his attention was caught by a bird.
A. when B. If C. and D. till
2. _____ they decide which college to go to, students should research the admission procedures.
A. As B. While C. Until D. Once
3. The little boy won’t go to sleep ____ his mother tells him a story.
A. or B. unless C. but D. whether
4. The engineers are so busy that they have zero time for outdoor sports activities, ____ they have the interest.
A. wherever B. whenever C. even if D. as if
5. --Our holiday cost a lot of money.
--Did it? Well, that doesn’t matter ______ you enjoyed yourselves.
A. as long as B. unless C. as soon as D. though
6. ______ unemployment and crime are high, it can be assumed that the latter is due to the former.
A. Before B. Where C. Unless D. Until
7. Because I’ve an important meeting to attend, I can’t come to your party this evening, _____ I’d like to.
A. much as B. as much C. much so D. so much
8. _____, his idea was accepted by all the people at the meeting.
A. Strange as might it sound B. As it might sound strange
C. As strange it might sound D. Strange as it might sound
9. Peter was so excited _____ he received an invitation from his friend to visit Chongqing.
A. where B. that C. why D. when
10. —I don’t care for baseball.
—How can you say you don’t like something you’ve never even tried it!
A. till B. when C. unless D. after
1. A。when用作等立连词，表示“正在那时”，引出一件出乎预料的事情，用于三个句型：一是be about to do...when...，二是had done…when…，三是was/were doing…when…。
2. D。once引导条件状语从句，表示“一旦”。句意：一旦学生们决定了去哪所大学读书，他们就得研究申请这所大学的程序了。
3. B。unless引导条件状语从句，表示“除非，如果不”。句意：除非妈妈给他讲故事，这个小男孩儿不会睡觉。
4. C。even if=even though，表示“即使”，引导让步状语从句。句意：工程师们非常繁忙，即使有户外体育活动的兴趣也没有时间去做。
5. A。as long as引导状语从句，表示“只要……就”，相当于so long as。unless除非；as soon as 一就；though虽然。句意：只要你玩的开心，花多少钱就不重要。
6. B。where引导地点状语从句，表示“在……地方”。句意：凡是失业率与犯罪率高的地方，犯罪都是由失业引起的。
7. A。as引导让步状语从句时，从句中作表语的单数名词或形容词、状语或动词原形要置于句首。句意：我有个重要会议要参加，今晚不能去参加你的聚会了，尽管我非常想去。
8. D。Strange as it might sound表示“尽管听起来有点奇怪”，as引导让步状语从句。
9. D。when引导时间状语从句，表示“当……时候”。句意：当彼得收到朋友参观重庆的邀请时，他很激动。若理解为so…that…句型，逻辑不通。
10. B。when引导的时间状语从句，还可以表示“既然，在……情况下”。
A. when B. If C. and D. till
2. _____ they decide which college to go to, students should research the admission procedures.
A. As B. While C. Until D. Once
3. The little boy won’t go to sleep ____ his mother tells him a story.
A. or B. unless C. but D. whether
4. The engineers are so busy that they have zero time for outdoor sports activities, ____ they have the interest.
A. wherever B. whenever C. even if D. as if
5. --Our holiday cost a lot of money.
--Did it? Well, that doesn’t matter ______ you enjoyed yourselves.
A. as long as B. unless C. as soon as D. though
6. ______ unemployment and crime are high, it can be assumed that the latter is due to the former.
A. Before B. Where C. Unless D. Until
7. Because I’ve an important meeting to attend, I can’t come to your party this evening, _____ I’d like to.
A. much as B. as much C. much so D. so much
8. _____, his idea was accepted by all the people at the meeting.
A. Strange as might it sound B. As it might sound strange
C. As strange it might sound D. Strange as it might sound
9. Peter was so excited _____ he received an invitation from his friend to visit Chongqing.
A. where B. that C. why D. when
10. —I don’t care for baseball.
—How can you say you don’t like something you’ve never even tried it!
A. till B. when C. unless D. after
1. A。when用作等立连词，表示“正在那时”，引出一件出乎预料的事情，用于三个句型：一是be about to do...when...，二是had done…when…，三是was/were doing…when…。
2. D。once引导条件状语从句，表示“一旦”。句意：一旦学生们决定了去哪所大学读书，他们就得研究申请这所大学的程序了。
3. B。unless引导条件状语从句，表示“除非，如果不”。句意：除非妈妈给他讲故事，这个小男孩儿不会睡觉。
4. C。even if=even though，表示“即使”，引导让步状语从句。句意：工程师们非常繁忙，即使有户外体育活动的兴趣也没有时间去做。
5. A。as long as引导状语从句，表示“只要……就”，相当于so long as。unless除非；as soon as 一就；though虽然。句意：只要你玩的开心，花多少钱就不重要。
6. B。where引导地点状语从句，表示“在……地方”。句意：凡是失业率与犯罪率高的地方，犯罪都是由失业引起的。
7. A。as引导让步状语从句时，从句中作表语的单数名词或形容词、状语或动词原形要置于句首。句意：我有个重要会议要参加，今晚不能去参加你的聚会了，尽管我非常想去。
8. D。Strange as it might sound表示“尽管听起来有点奇怪”，as引导让步状语从句。
9. D。when引导时间状语从句，表示“当……时候”。句意：当彼得收到朋友参观重庆的邀请时，他很激动。若理解为so…that…句型，逻辑不通。
10. B。when引导的时间状语从句，还可以表示“既然，在……情况下”。
