初三英语复习《动词时态》PPT课件

4. 当有些感觉动词词义转变,成为表示动作的动词 时,可以用进行时: e.g. Now I see the liquid in the glass has turned red.
He is seeing his friend off at the airport. I think they will come. We are all thinking hard. The report shows the problem is serious. He is showing them around our school.
e.g. The Greens have stayed in China for a year. The Greens stayed in China for a year during the war. I have learned computer for some time. I learned computer for some time while in middle school.
e.g. He has had the watch for a month. He bought the watch a month ago. My brother has been in the army for a year. My brother joined the army one year ago. 但是： 不可持续动词的否定结构可以与” for + 时间段 ” 或since + 时间点” 连用。 e.g. I haven’t met my teacher of English for a year. We haven’t met each other since he left.
动词时态
初中阶段8种时态： 1.一般现在时 2.一般过去时 3.一般将来时 4.现在进行时 5.过去进行时 6.现在完成时 7.过去完成时 8.过去将来时
(1) 一般现在时: 1.表示经常反复发生的动作. e.g. They often spend their holidays in the south. 常搭配的时间状语: always often usually sometimes seldom never from time to time now and then (偶尔) every day every …. once a week 2.表示状态: e.g. He is busy at the moment. 3. 表示客观真理,谚语,格言. e.g. The sun sets in the west.
2) 不可持续动词不能与 “ for +时间段”或since + 时间点 ” 连用，应改用持续性动词。 I have bought a calculator. I have bought the calculator for a week. I have had the calculator for a week.
III. 现在完成时与一般过去时的区别： 1) 完成时强调过去发生的动作的结果和影响；而 一般过去时强调动作发生的时间，地点，方式等， 与现在没有联系。 e.g. I have just had breakfast. I had breakfast a moment ago. (时间） I have finished my homework. I finished my home at home. （地点） 2）现在完成时表示的持续状态强调持续到说话 时为止， 与现在有联系， 而一般过去时表示的持 续状态强调过去某段时间的经历， 与现在没有联 系。
4. 用与时间或条件状语从句中, 代替一般将来时: e.g. I will be happy if you all come. We will go when he comes.
(2) 现在进行时 1.表示说话时正在进行的动作. e.g. He is walking towards the plane. 2. 表示目前一阶段正在进行(但说话时不一定在进 行)的动作: e.g. We are writing a paper these days.
一般现在时与现在进行时的区别 1.进行时强调动作正在进行,而现在时强调动作的 经常和反复,或特征,这类动作没有时间性的. 2.某些表示感官知觉的动词如: see, hear, smell, taste等表示感觉,用一般时,不用进行时. e.g. Do you see a plane in the sky? 注意:1) feel 可以用一般时和进行时表示说话时 的感觉: e.g. I am not feeling well today. How are you feeling today? I feel tired. 2) see, hear 有相应表示动作的动词 look at / listen to , 这些词可以用进行时
(4) 过去进行时 1.表示过去某一时刻正在进行的动作. e.g. He was doing shopping this time yesterday. We were having a discussion at that time. 2. 表示过去某一阶段正在进行的动作. e.g. Peter was playing chess the whole afternoon yesterday. We were having a meeting from nine to eleven yesterday. 3. 用与 when, while, as引导的表示过去的从句: (注意,这样的动词必须可以持续) e.g. While I was watching TV, the telephone rang.
As we were leaving, some of our friends arrived. When we were playing in the playground , it began to rain. 过去进行时与一般过去时的区别: 过去进行时强调过去某时刻或阶段动作的进行, 不表明动作的完成, 而一般过去时表示过去某动 作已发生,表明动作已完成. e.g. He was writing a composition last night.(作文不一定完成) He wrote a composition last night.(作文肯定 have / has + 动词的过去分词 II. 用法： 1. 表示说话前某一个时刻发生的动作之结果对现 在的影响。 e.g. I have already sent him a card. They have bought a new house. 常用的时间状语：already, just, yet 2. 表示从过去某一时间持续到说话时为止的动作 或状态， 常与 “ for+ 时间段 ” 或 “ since + 时间点 ” 的时间状语连用。 e.g. We have learned English for about three years. He has been here since last term.
3. 表示主语过去的状态或特征. e.g. It was rainy last week. He was a taxi driver years ago. 4. 在时间,条件状语从句中代替过去将来时. e.g. He would give her the book if he saw her. (4) 过去进行时 1.表示过去某一时刻正在进行的动作. e.g. He was doing shopping this time yesterday. We were having a discussion at that time. 2. 表示过去某一阶段正在进行的动作.
Exercise:
1. Water freezes ______(freeze) at the temperature 0. keeps 2. The air _____( keep ) moving all the time. 3. The town _____( lie) to the west of the hill. lies are telling believe 4. I _______( believe) you ________ tell the truth now. Is working 5. -- ____ my son __________ (work) hard this term? is trying -- Oh, yes, he _________(try) his best now. Does fit 6. ______ the hat _______ (fit) me well? 7. – What has happened to the fish, Mary? -- Mum, the cathas eaten ______ (eat) the fish. Just now the jumped ate cat _____(jump) onto the table and _____(eat) it up. 8. Sam ____( live) in the small town for five years lived during the war. have grown saw 9. It is ages since I last ____(see) you. You ___(grow) taller. got 10. He won’t tell us where he ______(get) the book.
IV. 不可持续动词与可持续动词 1）常见的词： leave die put on be away be dead wear borrow keep
fail ill be ill
catch a cold buy join the army have a cold have be in the army