各种时态的用法一、一般现在时的用法1、 经常性或习惯性的动作，常与表示频度的时间状语连用 时间状语： every…, sometimes, at…, on Sunday I leave home for school at 7 every morning.2、客观真理，客观存在，科学事实 The earth moves around the sun. Shanghai lies in the east of China3、表示格言或警句中 Pride goes before a fall. 骄者必败 注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时例：Columbus proved that the earth is round..4、现在时刻的状态、能力、性格、个性 I don't want so much. Ann Wang writes good English but does not speak well.比较：Now I put the sugar in the cup. I am doing my homework now. 第一句用一般现在时，用于操作演示或指导说明的示范性动作，表示言行的瞬间动作。
再如：Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志，表示正在进行的动作的客观状况，所以后句用一般现在时5、表示现刻的动作1）解说体育比赛2）演示说明3）舞台动作描述4）用于剧情介绍5）讲述书面材料内容6）指引道路7）图片说明8）用在here, there 后面6、表示将来时间1）下列动词：come, go, arrive, leave, start, begin, return的一般现在时表将来这主要用来表示按照时间表或既定日程会发生的将来事态 The train leaves at six tomorrow morning. When does the bus star? It stars in ten minutes.2）在 as soon as, before, if, until, 等从属连词引导的表示将来动作的时间或条件句里， 用一般现在时来表示将来时间When Bill comes (不是will come), ask him to wait for me. If it rains tomorrow, we will not go out.如果从属连词when引导的是表示将来的动作的主语从句，宾语从句，表语从句，定语从句，在这些从句里要使用表示将来的时态助动词shall/will.When he will get recovered from his illness remains unknown.The question is when you will graduate.3）在动词hope, take care that, make sure that等后 I hope they have a nice time next week. Make sure that the windows are closed before you leave the room.7、表示过去的动作1) 少数动词say, tell, hear, forget, learn等用一般现在时表示过去发生的动作。
He says he can’t wait any longer.My friends tell me that you have finished your task.2) 故事性读物中出现的戏剧性的描写The crowd swarms around the gateway and waits for the appearance of the singer.3) 用在报纸标题中Peace Talks Fail.The Price of Petrol Fall.4) 用在小说章节的标题中II Travel to Sydney.二、一般过去时的用法1、在确定的过去时间里所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 Where did you go just now? 2、表示在过去一段时间内，经常性或习惯性的动作 When I was a child, I often played football in the street.比较：I used to play football in the street. Whenever the Browns went during their visit, they were given a warm welcome. 3、句型：（主要是虚拟语气句型） 1）It is time sb. did sth. "时间已迟了" "早该……了"比较：It is time for sb. to do sth "到……时间了" "该……了" It is time you went to bed. 你早该睡觉了。
It is time for you to go to bed. 你该睡觉了 2）would (had) rather sb. did sth. 表示'宁愿某人做某事 I'd rather you came tomorrow. 3）wish后的宾语从句中 I wish you told me the truth. 4) If only引导的从句 If only I had a car now.5) as if/ as though 引导的从句中He talked as if he knew the answer.4) wonder, think, hope 等用过去时，作试探性的询问、请求、建议等I thought you might have some. 我以为你想要一些比较：一般过去时表示的动作或状态都已成为过去，现已不复存在 Christine was an invalid all her life. (含义：她已不在人间) Christine has been an invalid all her life. (含义：她现在还活着) Mrs. Darby lived in Kentucky for seven years. (含义：达比太太已不再住在肯塔基州。
) Mrs. Darby has lived in Kentucky for seven years. ( 含义：现在还住在肯塔基州，有可能指刚离去)5) 用过去时表示现在，表示委婉语气用于动词want, hope, wonder, think, intend 等中You wanted anything else?I wondered if you could help me.6) 对去世者的情况说明Edison was a very famous inventor.My grandfather lived a very simple life.三、 现在进行时的用法1、表示说话时正在进行的动作2、表示现阶段一直在进行的动作(这种动作在说话时不一定在进行)Hello, Tom, are you still working in that bank?3、现在进行时常与always, continually, constantly, for ever 等频度状语连用，对现阶段经常发生的动作表示某种感情色彩He is constantly losing his schoolbag.You’re always thinking of others.注：绝大部分表示状态和感觉的动词都不能用于be+-ing 结构，特别是know, love, like, belong, detest, hate, 其次be一般不能用于be+-ing 结构（如果这样用的话，表示一时的表现）Bob is being silly.You’re being very clever today.4、注意：短暂性动词一般不用进行时，用于进行时时，往往表示反复的动作。
He is locking the door.( wrong ) He is nodding. They are shaking their heads.5、表示将来的动作 1）按计划安排好去做的事情，一般带有未来的时间状语 I am meeting some foreign friends tonight.常见的动词：arrive begin come fly go get leave meet return spend start等比较： The train leaves at 9:30. Tom is leaving at 9:30.注：表示按时间安排的活动或计划要做的事情，物做主语时用一般现在时，而人做主语时用现在进行时 2）用在时间和条件状语从句中表示未来的情况 You must visit Sydney when you are travelling in Australia. If she is still waiting, tell her to go home.6、现在进行时的特殊用法1）用在戏剧式的描绘中，表示过去的动作2）用在戏剧或故事性的描述中，表示故事发生的情景。
3）表示暂时的情况My car has broken down. I am riding a bike to go to work.I am not hearing well these days.四、 过去进行时的用法1、表示过去某时正在进行的动作1）时间点I was doing my homework at nine o’clock yesterday morning.2）时间状语从句I was watching TV when you rang me up.3）上下文Jane was in town. She was seeing a film.2、用来描绘一幅景象，用于故事的开始或中间Long time ago, an old man was walking in a big dark forest. Some birds were singing……3、常与always, continually, constantly, for ever 等频度状语连用，表示某种感情色彩Your daughter was always crying.He was always helping the others.4、表示过去某时打算要做的事情或预计要发生的事情。
仅限于come go leave 等动词）Allen was coming to dinner.We were flying to New York tomorrow morning.5、句型was/were doing ……when……(表示过去正在做一件事情时，突然发生了另外一件事情。