think+it+名词+to do sth 这个语法为什么没有is?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 06:26:47

think+it+名词+to do sth 这个语法为什么没有is?
意思是“认为或发现做某事（对某人）是...的”it在句中作形式主语.e.g:I think it a good idea for us senior 3 students to have daily exercise.

it并不是在句中作形式主语,而是作宾语,而a good idea 是作it的宾补.若此处有is 也是一个正确的句子,但它就变成一个省略了that 的宾语从句,即:I think (that) it is a good idea for us senior 3 students to have daily exercise.

为什么有的时候是I think 有的时候是I think it is difficult to do sth 有没有 it is of great +抽象名词 +to do sth?it is of great +抽象名词后面到有没有think it +adj+for sb +to do sth这个短语有没这个句型:think it adj to do 或 find that it is adj to do sth It is adj to do sth/It is adj doing sth两个语法句式都对吗? I think it necessary to do sth.还是 I think it is necessary to 有没有it is hard to do sth这个句型,今天上午要答案 it is sb to do sth 有没有这个强调句型? They consider it harmful to do sth 这句语法有错吗?it后为什么没is,conside It is best to do sth.为什么best前没有the? it作形式宾语——find/think/belive+形容词/名词/for sb.+to do sth. i think it important to do sth