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its加形容词加to Do

it +形容词+to do sth: it作形式宾语.如:i think it hard to learn english well.it is +形容词+to do sth: it作形式主语.如:it's hard to learn english well.

意思是“(某人)做某事如何”.it是形式主语,(fot sb)to do sth 是真正的主语,形容词作表语.如: it's important for you to learn english well.

It's+形容词+to+do 表示“做某事怎么样”.it 是形式主语 is 是系动词 形容词是表语 to do 是句子真正的主语.例如:It is difficult to learn English well.学好英语很困难.希望能帮到你,祝开心(*^__^*)

it+形容词+(for sb)+to do sth

如果 it是形式主语的话It's +形容词+to do 是不定式 做真主语it's 加+no good /no use +doing 是动名词 作真主语no good /no use 是名词其他 It' s +形容词+doing 的句型并不多见 有 it's worth doing 等 可视为固定用法 但 it 也可以是其他名词

to do +形容词

it is+形容词+of sb to do sth 是形容人的品质的,例如,it's kind of you to help me.it's nice of you to help me.而it is+形容词+for sb to do sth则是形容事物的性质的,例如,it impossible for me to finish the job.it's hard for him to give up smoking.这样说有点眉目了吗?

it形式主语,真正的主语为后面的不定式,意思是“做什么事怎么样”.

It's important to learn Eglish well.学好英语很重要.

Itisadjtodosth.表示作某事是非常怎么样的.要看形容词是什么.动词不定式是起解释形容词的作用的.如:Itiseasytocompletethework.这项工作很容易完成.

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