题目内容
3.___ is known to everybody is that light travels faster than sound.( )A. | It | B. | As | C. | Which | D. | What |
分析 众所周知,光比声音传播得快.
解答 D 考查名词性从句.分析提干可知is known to everybody 是主语从句,主语从句中缺少主语,所以用what引导what在从句中做主语.that light travels faster than sound是表语从句;如果答案选A,that light travels faster than sound就会成为主语从句提干不符;如果答案选As,那么句子会是一非限制性定语从句,提干不符;故答案选D.
点评 名词性从句一直是高考考查的热点,近几年的高考题主要考察在具体语境中对what和that的辨析,此外,也要求学生对定语从句和名词性从句有清晰的辨认. 首先我们要判断它是哪个名词性从句.名词性从句是主句的一部分,可以充当主语、宾语、表语、同位语.就是说,如果我们能判断出某个从句是某个主句的主语、宾语、表语或同位语,
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