① It will be + some time + before…
It won’t be long before humans visit the Mars.
② It is + adj./n.+ for sb to do sth.
It is very important for us to learn computer well, because it has changed our life so much.
He said since it was a new model in China, it was impossible to fix it without the right spare parts.
③ It is + 被强调部分 + that…
1) It is what Yang Liwei has done that encourages us a lot.
2) Those who like reading extensively say it is through reading that we get our knowledge.
◆ more …than any other 表示最高级
Among the optional courses, spoken English and computer study are more popular than any one else.
① It would mean a great deal to me to listen to the tape and learn what is covered in the talk.
② My hometown is no longer what it used to be.
① The flat is in a building on Fangcao Street. It is not far from Jianxin Chinese School.→The flat is in a building on Fangcao Street, which is not far from Jianxin Chinese School.
② It was quite an experience for us both, which I’ll never forget for the rest of my life.
① I don’t know about others, but I used to have to work even at weekends doing endless homework and attending classes as well.
② We’ll mostly stay at home in the evening watching TV, playing games, and meeting people.
③ Hearing this, a few people began to run after him.
④ Born in American, Thomas Edison was a great scientist and inventor.
① A terrible accident happened yesterday, with nine people killed and almost eighty injured.
② He was carrying a bedroll and a large bag on his shoulder, with a large suitcase in his left hand.