外研社高中英语必修五module2语法动词的时态.pptVIP

一.一般过去时态（did式）: 1.基本用法: 1〕表示过去发生的动作或存在的状态:时间状语有：yesterday, last week, an hour ago, the other day, in 1982等 He bought the computer five years ago. 2) 表示过去经常性或习惯性的动作, We often played together when we were children. 注:表示过去习惯性的动作,可用would, used to, He used to go to work by bus. He would read in the sun.他老是在阳光下读书 3) since后加一般过去时句子作状语从句，主句用现在完成时 I have watched TV since I got home. I have known him ever since I was a child. 4.表示两个紧密相连的动作时，连词有: when, as soon as ,immediately, the moment, the minute. The moment I saw her, I know something was wrong. 5.情态动词+have done, but +过去时 Mr. white should have arrived at 8:30,but he didn’t. 2.特别用法: 注意： 用过去时表示现在，表示委婉语气。 1）动词want, hope, wonder, think, intend 等。 Did you want anything else? I wondered if you could help me. 2）情态动词 could, would. 　Could you lend me your bike? 3.句型： It is time sb. did sth. 时间已迟了“ 早该…了 It is time you went to bed. 你早该睡觉了。 (2)would (had) rather sb. did sth.　 表示宁愿某人做某事 　Id rather you came tomorrow. 现在完成时与一般过去时态的区别: 1)现在完成时强调对现在的影响或结果,而一般过去时态强调这一个动作发生的时间是过去。 2）一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。 一般过去时的时间状语：yesterday, last week，…ago, in1980, in October, just now等，皆为具体的时间状语。 现在完成时的时间状语：for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always等，皆不确定的时间状语。 共同的时间状语：this morning, tonight, this April, now, already, recently, lately 等 e.g. ①I’ve lived here for ten years. （现在仍住在这儿 ） ② I lived here for ten years. （现在不住在这儿 ） ③He has bought a house. （现在已拥有这房子） ④ He bought a house. （现在拥不拥有这房子,不知道,只是知道买了房子,现在可能拥有也可能卖掉了） 二.过去进行时（was/were＋ p.p.） 1. 过去某一时刻在进行的动作．经常需要表示过去的时间状语．常用的时间状语this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while This time yesterday, they were having lunch. It was raining when they left the station. 2.表示一动作正在进行时，另一动作同时正在进行. while+ doing when+ doing/did My mother was cooking while I was doing my homework.(可以持续动作时态一