I think it important to study hard和l think it is important to study hard哪个句子是对的?为什么?
问题描述：
I think it important to study hard和l think it is important to study hard哪个句子是对的?为什么?
答
都是对的
第一句是 动词不定式
it做代词 指代不定时to study hard
第二句是 宾语从句 省略了that
l think that it is important to study hard