What he said is reasponable中为什么用is？

Question

英语的主谓一致

Answer 1

what he said is reasponable ?该句式是一个复合句式，中【what he said 】是主语，“他说什么”是不可数的，【is 】是在这里做谓语，中间缺少一个【that is reasponable】是做定语用，只是此处省略了【that】罢了，因此此处用的【is】而不是was或are。

Answer 2

一个主语从句作主语，谓语用单数形式。
What he is doing looks very interesting.

他正在做的事情看起来很有趣。
但如果表语是复数，系动词be就用复数。
What he gave me were two books.
如果是两个主语从句作主语，指两件事，用复数形式。
What had happened and when he came were still unknown to us.本回答被网友采纳