【初中英语 】50 个必考句型 + 8 大时态结构(4)
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七、现在完成时 1.概念:过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态。 2.时间状语:yet, already, just, never, ever, so far, by now, since+时间点,for+时间段,recently, lately, in the past few years,etc. 3.基本结构:主语+have / has+过去分词+其它 4.否定形式:主语+have / has+not+过去分词+其它 5.一般疑问句:have 或 has 放句首。 eg: ①I've written an article. 我已经写了一篇论文。 ②The countryside has changed a lot in the past few years. 在过去的几年,农村发生了巨大的变化。 八、过去完成时 1.概念:过去发生或者已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态。 2.时间状语:before, by the end of last year (term, month), etc. 3.基本结构:had+done. 4.否定形式:had+not+done. 5.一般疑问句:had 放于句首。 6.用法: (1)在told, said, knew, heard, thought等动词后的宾语从句中。 eg: She said (that) she had never been to Paris. 她告诉我她从来没有去过巴黎。 (2)在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。 eg: ①When the police arrived, the thieves had run away. 警察到达时,小偷们早就跑了。 (3)表示意向的动词,如hope, wish, expect, think, intend, mean,suppose等,用过去完成时表示"原本…,未能…"。 eg: ①We had hoped that you would come, but you didn't. 那时我们希望你能来,但是你没有来。 ②I had hardly opened the door when he hit me. 我刚打开门,他就打了我。 (注意:had hardly… when... 刚......就......) ③He had no sooner bought the car than he sold it. 他刚买了这辆车,转眼又卖了。 (注意:had no sooner…than 刚…… 就……) (责任编辑:admin) |
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