同等学力英语语法练习(29)

2014-11-08 19:46:00来源:网络

  1. Ultrasonic sounds produce pulsed signals, ______ various defects in metal can be detected.

  A. to which B. which C. of which D. by means of which

  2. Five minutes earlier ______ we could have caught the last train.

  A.and B. but C. or D.so

  3. There ______ the last piece of cheese and the last spoonful of ice cream.

  A. goes B. go C. is going D. are going

  4. Most people encourage their children to take an active part in social events, ______ those events do not interfere with their studies.

  A. lest B. though C. unless D. provided

  5. I think you should take an umbrella. It ______ rain before evening though the sky is bright now.

  A. may B. can C. might D. will

  参考答案:

  1. 答案:D  解析:by means of sth.(by means )是习惯用法,意思是“用??手段”,如:By that means you could have done the work successfully. /He had invented a new device, by means of which many technical problems were solved.

  2. 答案:A  解析:这是一种句子层次的习惯用法,如:One more advanced computer and we can do a better job of this cartoon film. 前面半句用动词短语亦可,如:Go a step further and you will be a criminal. 上面两个例句的前半句可理解为条件状语从句:if we have one more advanced computer 和if you go a step further 。

  3. 答案:A  解析:there goes here comes 可作习惯用法记忆和使用。例如:There goes the bus!/ Here comes Mr. Stone. /There goes our most delicious dish! 在语法上它们都属于倒装句。

  4. 答案:D  解析:provided 作从属连词用,等于providing that 、provided that ,它们都是if 的意思,如:You can be employed provided you know the techniques.

  5. 答案:C  解析:根据后一句的从句判断,下雨的可能性纯属猜测,故用might 。如可能性大些则用may 。例如:He is young but still he might stumble and hurt himself. /It is cloudy now and it may rain.

本文选自新东方在线论坛。

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