初中教材中的八個IT句型
在初中英語教材中，出現(xiàn)了許多由it引導的固定句式，現(xiàn)歸納如下：一、It's time for sb. to do sth. / It's time for sth.意為"是(某人)該干……的時間了"、"到……的時候了"。例如：
1. It's time for supper ／to have supper.該吃晚飯了。
2. It's time for me to study.我該學習了。
二、It takes(sb.)some time to do sth.意為"(某人)花……時間做某事"。例如：
1. It takes twenty minutes to go to school by bike. 騎自行車上學要花二十分鐘的時間。
2. It took me a week to finish reading the book. 我花了一周時間讀完這本書。
三、It is one's turn to do sth.意為"輪到某人做某事了"。例如：
It's your turn to be on duty tomorrow. 明天輪到你值日了。
四、It is ／ has been ＋時間段＋since ＋一般過去時，意為"自從……以來已過了……(時間)。" 例如：
1. It is / has been four days since I caught a cold. 我感冒已四天了。
2. It is / has been two weeks since we met last. 自從我們上次見面以來已過了兩周。
五、It seems ／seemed ＋that從句，意為"看起來好像……"。例如：
It seemed that our team was going to win. 我們隊看起來好像要贏了。
六、It's＋表語＋to do sth.。例如：
It's a good idea to go out for a walk. 出去散步是個好主意。
七、It's ＋adj.＋that從句。例如：
It's true that I may fall behind the other students.我真可能落在別的學生后面。
八、 It's＋adj.＋of(for)sb.＋to do sth.。對于這個句型究竟用of還是用for，主要取決于前面的形容詞。如果形容詞是描述不定式行為者的性格、品質等的，如 kind，good，nice，clever等用of；如果形容詞僅僅是描述行為的則用for，這類形容詞常見的有difficult，easy，hard， important，dangerous等。例如：
1. It is nice of you to come to see me.你能來看我真好。
2. It is dangerous for children to play with fire.對小孩兒來說玩火是危險的。