Only four people turned at the party,(which) disappointed the hostess very much?为什么句中一定是which,当做非限制性定语从句,填what为什么不可以,当做主语名词性从句,what代只前面的句子?还有which可以引导名词

Question

Only four people turned at the party,(which) disappointed the hostess very much?
为什么句中一定是which,当做非限制性定语从句,填what为什么不可以,当做主语名词性从句,what代只前面的句子?还有which可以引导名词性从句放句首吗?

Answer 1

只能用 which 不能用 what ,which 代指前面这件事 即 Only four people turned at the party,其实我觉得学这些绕来绕去的语法很无用的 可以把语法说的简单点 不用那些专业名词,学生搞的很晕 还是用例句来解释语法