颠覆了我的三观啊，What主语从句谓语动词是单数还是复数的问题

Question

如题所述

Answer 1

What引导的主语从句中，从句的谓语动词是什么形式？用单数还是复数？
比如下面两句，应用哪句？
What counts is your comments.
What count is your comments.
【答】1.如果What在主语从句中不是主语，则从句的谓语动词应该根据主语的数来决定，与what无关。例如：What I am most interested in is/are your immediate personal reactions. 我最感兴趣的是你本人马上作出的反应。/ What we need is/are a few bright young engineers. 我们所需要的是几位聪明的年轻工程师。（摘自《牛津英语用法指南》第三版529.2节）
2.如果What在主语从句中充当主语，则从句的谓语动词用单数。例如：What is most important in life isn't money. 人生最重要的并非金钱。（摘自外研社、建宏《英汉多功能词典》
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Answer 2

从句作主语谓语动词一般用单数。

Answer 3

we should give them a hand.