题目内容
Research shows that though students benefit from having parents involved at school, _____ happens at home matters much more.
- A.which
- B.what
- C.that
- D.whether
试题分析:考查主语从句。本题的what引导起主语从句what happens at home,并在句中作主语。CD两项不能在句中做主语,which是指特定范围之内的某一个。故B正确。
考点:考查主语从句的连接词
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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