在初中英语教材中,出现了许多由it引导的固定句式,现归纳如下:
一、It's time for sb. to do sth. / It's time for sth.意为"是(某人)该干……的时间了"、"到……的时候了"。例如:
1. It's time for supper /to have supper.该吃晚饭了。
2. It's time for me to study.我该学习了。
二、It takes(sb.)some time to do sth.意为"(某人)花……时间做某事"。例如:
1. It takes twenty minutes to go to school by bike. 骑自行车上学要花二十分钟的时间。
2. It took me a week to finish reading the book. 我花了一周时间读完这本书。
三、It is one's turn to do sth.意为"轮到某人做某事了"。例如:
It's your turn to be on duty tomorrow. 明天轮到你值日了。
四、It is / has been +时间段+since +一般过去时,意为"自从……以来已过了……(时间)。" 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. 自从我们上次见面以来已过了两周。
五、It seems /seemed +that从句,意为"看起来好像……"。例如:
It seemed that our team was going to win. 我们队看起来好像要赢了。
六、It's+表语+to do sth.。例如:
It's a good idea to go out for a walk. 出去散步是个好主意。
七、It's +adj.+that从句。例如:
It's true that I may fall behind the other students.我真可能落在别的学生后面。
八、 It's+adj.+of(for)sb.+to do sth.。对于这个句型究竟用of还是用for,主要取决于前面的形容词。如果形容词是描述不定式行为者的性格、品质等的,如 kind,good,nice,clever等用of;如果形容词仅仅是描述行为的则用for,这类形容词常见的有difficult,easy,hard, important,dangerous等。例如:
1. It is nice of you to come to see me.你能来看我真好。
2. It is dangerous for children to play with fire.对小孩儿来说玩火是危险的。
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