英语人教版九年级全册2017中考备考----动词时态的系统复习.ppt

;动词的五种基本形式; ;动词-ing形式的构成：;动词过去式过去分词变化规则：;;初中阶段8种时态： 一般现在时(am,is,are / do,does) 一般过去时(was,were / did) 一般将来时(will / am/is/are going to) 现在进行时(主+am/is/are+doing) 过去进行时(主+was/were+doing) 现在完成时(主+have/has+done) 过去完成时(主+had+done) 过去将来时(would / was/were going to) ;一般现在时: 表示现在的状态:(am,is,are) I am tired today. He isn’t busy at the moment. Are they at home? 2. 表示经常反复发生的动作.(do,does) They spend their holidays in the south once a year. --Does Maryoften go home?—No,she doesn’t. 常搭配表频率的时间状语: always, usually, often , sometimes,hardly ever never, from time to time, at times,now and then every day, once a week ,three times a year;3. 表示客观真理,谚语,格言. The sun rises in the east and sets in the west. 4. 在时间状语从句或条件状语从句中, 用一般现在时代替一般将来时(主将从现）: I will be happy if you are here. We will go when he comes. She will go to the park if it doesn’t rain tomorrow. I will do it better if I am given another five minutes. ; 一般过去时 1、表示过去的状态或特征. It was not rainy last week. They were taxi drivers many years ago. 2、表示过去某一具体时间发生过的动作. I reviewed my lessons last night. I didn’t know he was your father. Did you go to school yesterday? 3. 表示过去经常反复发生的动作. Peter often played basketball when he was in college.;现在进行时 构成：主语+be (am,is,are)+ doing 现在进行时态表示说话瞬间正在发生或进行的动作。标志词：now，right now，at the moment，at 6：00，look，listen等。 1、I am waiting for my mother now. 2. Look! Jim isn’t doing his homework now. 3. --What are they doing ? --Listen, they are singing.;过去进行时 构成：主语+be (was,were)+ doing 一 、表示过去的某个时刻正在发生或进行的动作。 1、He was doing shopping at this time yesterday. 2、We were having a discussion at that time. ;过去进行时 二. 表示过去某一阶段正在进行的动作. 1. Peter was playing chess the whole afternoon yesterday. 2.We were having a meeting from nine to eleven yesterday. 三. 用于 when, while, as等引导的表示过去的时间状语从句中: As I was watching TV, the telephone rang. Mother was cooking when I came home. I was shopping while it was snowing. ;一般将来时（1） 概念: 表示将来某个时间要发生的动作或存在的状态。 标志语：tomorro