题目内容
11.Our government has taken some measures to overcome the lack of electricity,but it may take some time _______ we have enough power.( )A. | since | B. | after | C. | unless | D. | before |
分析 我们的政府已经采取了一些措施来克服电力不足的问题,但也许还要一段时间我们才能有充足的电力.
解答 答案:D
句型搭配,it is+时间段+before从句,表示多久以后…才…;since自从,after之后,unless除非;句意表达的是多久以后才.故选D.
点评 从属连词是连词的一种,用来引导名词性从句和状语从句.大致可分为三大类:that(无词义,不做成分)if,whether (表达是否的意义,但不做句子成分); 连接代词:who,whom,whose,what,which,whatever,whoever,whichever(有词义,在句子中可作主语、表语、宾语);连接副词:when,where,why,how,how many,how long,how far,however,whenever,wherever (有词义,作从句的状语).学习时,要注意区分和掌握.
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