Question

I hate _____ when people talk with their mouths full.

A．it

B．that

C．these

D．them

Answer 1

A

考查形式賓語。it是形式賓語，真正的賓語是when people talk with their mouths full，因?yàn)閔ate在此處是及物動(dòng)詞，后面必須加賓語，但是when people talk with their mouths full是一個(gè)完整的句子，不能做賓語，就必須用it充當(dāng)形式賓語。
這個(gè)時(shí)候when people talk with their mouths full雖然是一個(gè)疑問句，但是卻是陳述句的形式，when翻譯成“當(dāng)……的時(shí)候”。when做“當(dāng)……的時(shí)候”講的時(shí)候，不一定就是引導(dǎo)時(shí)間狀語從句，它可以用于從句中。比如what：I don't believe what you said.
這里的what同樣是疑問詞，也作“什么”講，但是它僅僅是從句的一個(gè)成分而已（賓語）。