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百日打卡--状语从句1
练习
1.Over time, 45 the population grew, people began cutting food into small pieces so it would cook more quickly.
2.The mother held the baby in her front paws much the way a human does. 46 it cried, she rocked it back and forth and gave it little comforting pats.
3.If you don’t understand something, you may research, study, and talk to other people ____ you figure it out.
A. because B. though C. until D. since
4.（2017·天津卷·完形填空）She had been talking to her mother about the lives of homeless people 42 they first saw the homeless man.
A. since B. unless C. although D. as
5.I have heard a lot of good things about you I came back from abroad.
A. since B. until C. before D. When
6.We need to get to the root of the problem ______________ we can solve it.
A. while B. after C. before D. as
7.It ________ long before we ________ the result of the experiment.
A. will not be；will know B. is；will know
C. will not be；know D. is；know
8.Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.
A. since B. after C. before D. when
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百日打卡--状语从句1
练习
1.Over time, 45 the population grew, people began cutting food into small pieces so it would cook more quickly.
【参考答案】as/when
【答案解析】考查时间状语从句。句意：随着人口的增长，人们开始把食物切成小块，这样可以煮得快一点，这里是时间状语从句，when意为＂当……的时候＂，后跟长动作或短动作，故填as／when。
2.The mother held the baby in her front paws much the way a human does. 46 it cried, she rocked it back and forth and gave it little comforting pats.
【参考答案】When/If
【答案解析】考查时间状语从句。句意：如果或当它哭的时候，她会前后摇动。故填When/If。
3.If you don’t understand something, you may research, study, and talk to other people ____ you figure it out.
A. because B. though C. until D. since
【参考答案】C
【答案解析】A. because 因为 B. though尽管 C. until 直到 D. since自从。句意：如果你无法理解某个东西，你可能会去研究，学习并和他人探讨直到你解决为止，根据句意可知选用until“直到”，选C。
4.（2017·天津卷·完形填空）She had been talking to her mother about the lives of homeless people 42 they first saw the homeless man.
A. since B. unless C. although D. as
【参考答案】A
【答案解析】考查连词。A. since 自从B. unless 除非C. although尽管D. as因为。句意：自从他们第一次看到无家可归的人，Hannah就一直在跟她的妈妈说流浪者的生活，根据句意可知选A。
5.I have heard a lot of good things about you I came back from abroad.
A. since B. until C. before D. When
【参考答案】A
【答案解析】考查状语从句。题干中主句谓语动词用现在完成时，从句中谓语动词用一般过去时，由题干意思可知所填词意思是：自从，因此用since引导时间状语从句。句意：自从我从国外回来后，我已经听说了很多关于你的好事。
6.We need to get to the root of the problem ______________ we can solve it.
A. while B. after C. before D. as
【参考答案】C
【答案解析】考查时间状语从句的连接词。句意：在我们解决问题之前，我们需要找到问题的根源。A. while当……的时候，而；B. after在……之后；C. before 在……之前；D. as正如。根据句意可知选C。
7.It ________ long before we ________ the result of the experiment.
A. will not be；will know B. is；will know
C. will not be；know D. is；know
【参考答案】C
【答案解析】句意：不会过很长一段时间我们就会知道实验结果。应使用It was not long before的创新 句型It will not be long before，before引导时间状语从句时，从句应用一般现在时代替一般将来时。
8.Scientists say it may be five or six years ________ it is possible to test this medicine on human patients.
A. since B. after C. before D. when
【参考答案】C
【答案解析】该句型也是It was not long before的创新句型。句意：科学家说也许再有5年时间这种药就可以在人类身上做实验了。
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