八年级时态总结

时间:2022-04-26 04:20:12 阅读: 最新文章 文档下载
说明:文章内容仅供预览,部分内容可能不全。下载后的文档,内容与下面显示的完全一致。下载之前请确认下面内容是否您想要的,是否完整无缺。
1.一般现在时的用法

1 经常性或习惯性的动作,常与表示频腮度的时间状语连用。时间状语: every, sometimes, at, on Sunday。例如:

I leave home for school at 7 every morning. 每天早上我七点离开家。 2 客观真理,客观存在,科学事实。例如:

The earth moves around the sun. 地球绕太阳转动。

Shanghai lies in the east of China. 上海位于中国东部。 3 表示格言或警句。例如:

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. 哥伦布证实了地球是圆的。 4 现在时刻的状态、能力、性格、个性。例如: I don't want so much. 我不要那么多。

Ann writes good English but does not speak well. 英语写得不错,讲的可不行。

比较:Now I put the sugar in the cup. 把糖放入杯子。 I am doing my homework now. 我正在做功课。

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。

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。

2. 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。例如:时间状语有:yesterday, last week, an hour ago, the other day, in 1982等。例如: Where did you go just now? 刚才你上哪儿去了?

2)表示在过去一段时间内,经常性或习惯性的动作。例如:

When I was a child, I often played football in the street. 我是个孩子的时候,常在马路上踢足球。

Whenever the Browns went during their visit, they were given a warm welcome. 那时,布朗一家无论什么时候去,都受到热烈欢迎。

3)句型:It is time for sb. to do sth "到……时间了" "该……了"。例如:It is time for you to go to bed. 你该睡觉了。

It is time that sb. did sth. "时间已迟了" "早该……了" ,例如It is time you went to bed. 你早该睡觉了。

would had rather sb. did sth. 表示'宁愿某人做某事'。例如:I'd rather you came tomorrow.还是明天来吧。

4 wish, wonder, think, hope 等用过去时,作试探性的询问、请求、建议等,而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。例如:I thought you might have some. 我以为你想要一些。

比较: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)


3.一般将来时

1 shall用于第一人称,常被will 所代替。will 在陈述句中用于各人称,在征求意见时常用于第二人称。例如:

Which paragraph shall I read first 我先读哪一段呢?

Will you be at home at seven this evening? 今晚七点回家好吗? 2 be going to +不定式,表示将来。

a. 主语的意图,即将做某事。例如:What are you going to do tomorrow? 明天打算作什么呢?

b. 计划,安排要发生的事。例如:The play is going to be produced next month这出戏下月开播。

c. 有迹象要发生的事。例如:Look at the dark clouds, there is going to be a storm. 看那乌云,快要下雨了。

3 be +不定式表将来,按计划或正式安排将发生的事。例如:

We are to discuss the report next Saturday.我们下星期六讨论这份报告。 4 be about to +不定式,意为马上做某事。例如:

He is about to leave for Beijing. 他马上要去北京。

注意:be about to do 不能与tomorrow, next week 等表示明确将来时的时间状语连用。

4. 一般现在时表将来

1)下列动词come, go, arrive, leave, start, begin, return的一般现在时可以表示将

来,主要用来表示在时间上已确定或安排好的事情。例如:

The train leaves at six tomorrow morning. 火车明天上午六点开。

When does the bus star? It stars in ten minutes. 汽车什么时候开?十分钟后。 2)以here, there等开始的倒装句,表示动作正在进行。例如: Here comes the bus. = The bus is coming. 车来了。 There goes the bell. = The bell is ringing. 铃响了。 3)在时间或条件句中。例如:

When Bill comes (不是will come, ask him to wait for me. 比尔来后,让他等我。

I'll write to you as soon as I arrive there. 我到了那里,就写信给你。 4)在动词hope, take care that, make sure that等的宾语从句中。例如: I hope they have a nice time next week. 我希望他们下星期玩得开心。

Make sure that the windows are closed before you leave the room. 离开房间前,务必把窗户关了。

5. 用现在进行时表示将来

下列动词come, go, arrive, leave, start, begin, return等现在进行时可以表示将来。例如:

I'm leaving tomorrow. 明天我要走了。

Are you staying here till next week? 你会在这儿呆到下周吗?


本文来源:https://www.wddqw.com/doc/5594930f4b2fb4daa58da0116c175f0e7cd119ab.html