句子主语结构设置复杂.有跟不定式作定语的.有跟定语从句作定语的.还有用主语从句.并列结构或同位语结构的.这些会干扰同学们的解题思维.但只要我们抓住了句子的主干.问题也就迎刃而解了.如: It was what he did that made his parents upset. It is I who am responsible for this case. 注意:强调某人时.可以用who代替that, that(who)后部分的谓语动词要和被强调部分的主语部分在语法上保持一致. [真题回顾1]It is what you do rather than what you say matters. A. that B. what C. which D. this 解析:题意是“是你所做的而不是你所说的起作用 .强调句子主语.主语是并列连词rather than 连接的两个主语从句充当.故选A. 【查看更多】