题目内容
18.________ is known to us all,our government has spared no efforts to control food prices.( )A. | What | B. | Which | C. | As | D. | It |
分析 众所周知(正如我们所知道的),我们的政府不遗余力地控制食品价格.
解答 答案C.
本题考查非限制性定语从句.as和which都可以引导非限制性定语从句,代指一句话所指带的内容,但是as引导的非限制性定语从句可放在主句之后,也可放在主句之前.但which只能放在主句之后.故排除B.as用于引导定语从句时,具有"正如…、像…、由…而知"等语义.as在定语从句中作主语时,其谓语动词可以是及物动词的被动语态,也可以是be或其它连系动词.故答案选C.如果选A,则应该把句子改成"What is known to us all is that our government has spared no efforts to control food prices".如果选用it做形式主语,则应该把句子改写成"It is known to us all that our government has spared no efforts to control food prices".
点评 本题考查关系代词的用法.定语从句的考查主要就是考查关系词的辨析,关系代词that,which,whose,whom,as,who在句中做主语,宾语,表语或者定语;where,why,when在句中做状语.要分析句子成分,看缺少什么成分,就选用相应的关系词.
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