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牛津上海版高三下册《Appendix》优秀教学课件
2. It is +n. to do sth.
3. It is +n./adj. that 从句
4. It is +过去分词said/reported/estimated... that 从句
eg. 1)据我所知，在那座小城市里购物很方便。（as far as）
As far as I know, it is convenient to do shopping in that small city.
2)我们每个人参与志愿者工作，是很有必要的。（necessary）
It is necessary for every one of us to participate in /take part in volunteer work.
3) 你开车送我们回家，真是太客气了。（kind）
It is very kind of you to send us home in your car.
4保护环境是每个公民的职责。（It...）
It is the duty of every citizen to protect our environment.
5很明显，他们离目的地越来越远。（It）
It is obvious that they are farther and farther away from their destination.
6据报道，那家工厂又失火了。（It）
It is reported that another fire broke out in that factory.
或 It is reported that that factory caught fire again.
常用需要记忆的it作形式主语的 句型
1. It is necessary/easy /important (for sb.) to do sth.
2.It is kind/brave/polite /clever of sb. to do sth.
3.It is one’s honour to do sth.
4.It is no good/no use/useless/a waste of time doing sth.
5. It is said/reported/believed/estimated that 从句
6. It seems/appears/happens/turns out/proves that 从句 似乎/好像/碰巧/结果是/证明是...
7. It appears to sb that...在某人看来...
8. It occurred to sb that... 某人想起...