______ proves that Jack is really enthusiastic and cautious.A.It happened thatB.

______ proves that Jack is really enthusiastic and cautious.A.It happened thatB.

题型:不详难度:来源:
______ proves that Jack is really enthusiastic and cautious.
A.It happened thatB.When it happenedC.What happenedD.That has happened

答案
C
解析

试题分析:考查主语从句。本题中的what引导起一个主语从句what happened,在句中做主语。句意:发生的事情证明Jack真的很热情很谨慎。故C正确。That在主语从句中不充当任何成分。A项意为碰巧。B项不能做主语。
点评:名词性从句的考查集中在引导词的选择上,连接词that, whether, if在句中不充当任何成分,只起连接作用;连接代词who(ever), which(ever), whom(ever),whose(ever),what(ever)在句中做主语,宾语,表语和定语;连接副词when, why, where, how,在句中做状语。应从上下句的句法关系着手分析,切不可‘望句形生答案’总的来说,考生在解答此类型时,可用排除法或造句法,造句法就是仿造原句的语法功能仿造出一个易懂易理解的句子,帮助判断。
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