高中英语语法中It用法及其句型和固定搭配讲解

It用法及其句型和固定搭配讲解

三、It作主语的句型

1. It takes sb. to do（=sb takesto do）某人用多长时间做某事

例 It took the men a week to mend our roof.（= The men took a week to mend our roof.）

2. It's（just）（un）like sb. to do（不）像某人做某事的'风格

例 It was（just）like him to think of helping us.

3. It's（about/high）time that should /v-ed是该做某事的时候了

例 It's（about/high）time that we should take action.

4. It's the x-th time（that） have v-ed第几次做某事了

例 It's the third time that he has failed the driving test.

5. It is/has been since continuous v-ed（延续性动词）某动作已有多长时间不发生了

例 It's 10 years that he lived here

6. It was（not） before过（不）了多长时间某动作发生了

例 It was not long before they arrived.