Question

“it's hard to say”的句子结构？

it's hard to say .

这个句子是to say 修饰做形容词的hard
还是hard修饰做表语的to say 呢？

为什么呢？

Answer 1

当主语较长，谓语较短时，常用it做形式主语，而将不定式放到谓语的后面。

【例如】

It is important for modern young people to master at least two foreign languages.

It做形式主语，不定式放在谓语动词之后常用于下列结构中：

a) It is＋形容词(easy, important, difficult, foolish, inconvenient, unnecessary, right, wrong...)＋( for/of sb.)＋不定式

【例如】

It is essential to reserve a table in advance of Christmas Eve.

It is hard to put my hopessintoswords.

It is not easy to catch fish with your hands only.

It is important for us young people to learn English and master it.

b) It is＋名词(a pleasure, a pity, a pleasant thing, one's du�ty, an honor, a shame, a crime, no easy job...)＋不定式

It is a sheer waste of time to read that kind of trash.

It is a pity to have to go without her.

It is a glorious death to die for the people.

c) It takes (sb.) some time (hours, months, days, a lot of time, patience...)＋不定式

It takes me three hours to learn English each day.

It took them half the night to get home in the snow.

Answer 2

it 是形式主语 to say是真正的主语
主系表结构
也可以这样to say is hard.

Answer 3

it是形式主语，真正的主语是to say

Answer 4

it's hard to 做什么很难~`
用来修饰say`

Answer 5

hard修饰to say