Question

it was no use pretending that i had not seen him

it was no use pretending that i had not seen himit was no use pretending that i had not seen himiit was no use pretending that i had not seen himit was no use pretending that i had not seen him

为什么it 指代的是pretending that i had not seen him？而不指代 that i had not seen him？pretending在这里做什么成分？
求求大神讲解下！困扰两天了！！

Answer 1

it这里是形式主语
pretending that I had not seen him是真正主语。
这句属于为了平衡句子结构而使用形式主语的典型例子，因为真正主语实在太长了。

不用形式主语是这样的
Pretending that I had not seen him was no use.

追答

更多的例子

It is extremely obvious that she has been lying about her identity.

It is my pleasure to address the meeting.
It was pretty hard for him to bring up the child on his own.

追问

It is extremely obvious (that she has been lying about her identity)

It is my pleasure(to address the meeting)
It was pretty hard for him (to bring up the child on his own)括号里面是形式主语对吗？

追答

对的

Answer 2

pretending形式主语，that.....是pretending的从句

追问

但是 不也有that引导形式主语吗？这个怎么区分？

追答

that引导形式主语从句一般在句首

追问

能细说下吗？

追答

that后面是pretending的内容

it is no use doing
doing就是真正的主语