This is a new dictionary. I bought it yesterday.
Tom joined the army last month. Do you know about it?
Is this your car? No, it isn’t.
What’s that? —It’s a video.
Whose room is this? —It is theirs.
Who’s there? It’s me. (It’s John)
Go and see who it is that rings. It’s Bill.
The Greens have a new baby. It’s lovely.
It’s Sunday today. 今天是星期天。
It’s three months since he came here.
How far is it to the Great Wall.
It’s getting dark. 天快黑了。
—How much is the coat? —It’s ninety dollars.
It is up to you to decide. 这事要由你决定。
It makes me happy to hear you have recovered.
It’s no good smoking. 吸烟没有好处。
It’s working the whole night on the problem.
It doesn’t matter what you do. 你干什么都没有关系。
It seems that everyone has known the news.
I consider it better to be early.
We found it impossible to get there before July .
We thought it no use doing that.
The teacher makes it clear that everyone should hand in his homework on time.
强调句型：It is (was) +被强调部分+ that (who) + 其它
It is I who am to . 是我该受责怪。
It was your uncle that (who) came yesterday.
It was a new pen that Mother gave me .
It was in the classroom that I left my umbrella.
It is at eleven that the train leaves.
It was just as he ordered that I acted.
It was because he was in trouble that I tried my best to help him.
It was red that we painted the gate.
It was chairman that they him .
说明：原句的谓语动词如果是现在或将来时态用It is … that (who)如果原句谓语动词是过去时态，则用It was … that (who)。在强调时间，地点，原因或方式时不要用when, where, how, 必须用that。