作业帮 > 英语 > 作业

一个英语,两个英语,三个英语.

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/04/29 04:37:55
一个英语,两个英语,三个英语.
现在进行时,一般现在时,一般过去时,一般将来时.什么时候用.各举列一个句子.回答要求简单易懂.
现在进行时:A.现在(指说话人说话时)正在发生的动作,We are waiting for you.我们正在等你.B.习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行.Mr.Green is writing another novel.(说话时并未在写,只处于写作的状态.) 一般现在时: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 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 China.3) 表示格言或警句中.Pride goes before a fall.骄者必败.一般过去时: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.Whenever the Browns went during their visit,they were given a warm welcome.一般将来时:表动作即将要发生 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,在争求意见时常用于第二人称.Which paragraph shall I read first.Will you be at home at seven this evening?2) be going to +不定式,表示将来.a.主语的意图,即将做某事.What are you going to do tomorrow?b.计划,安排要发生的事.The play is going to be produced next month.c.有迹象要发生的事 Look at the dark clouds,there is going to be a storm.3) be +不定式表将来,按计划或正式安排将发生的事.We are to discuss the report next Saturday.4) be about to +不定式,意为马上做某事.He is about to leave for Beijing.