had expected there to be so many people present at the meeting.中的there to be 是什么用法?

had expected there to be so many people present at the meeting.中的there to be 是什么用法?

是非谓语动词,在这句中had expected为谓语动词.注意expect的用法,它的词组结构是expect sb.to do sth.现在expect后接的结构是there be ,其中be 为动词,因而要用它的不定式的形式,于是构成expect there to be 的结构,译成“期望有----,希望有----”
因为expect 没有expect doing 的结构,所以不可以用had expected there being的形式

非谓语动词的用法。