题目内容
20.-Don't leave your computer_____ if you don't use it.Electricity is valuable.-Sorry,I won't.( )
| A. | on | B. | out | C. | off |
分析 --如果你不用电脑了,不用让它开着,电是宝贵的.
--抱歉,我不会这样了.
解答 答案:A.
结合语境可以推断这句话表达的意思是"如果你不用电脑了,不用让它开着,电是宝贵的.",所以设空处的介词短语表达的意思是"让电脑开着",应该用on,故选A
点评 英语介词的一个特点是一词多义,并且介词间语义交叉现象很多,习惯用法也很多,有时很难从词义上区分开来.故学习中要注意不断总结,熟记一些介词和动词的固定搭配用法及习惯用法,是完成此类问题的捷径.
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