求初中所学的八种时态（用法,构成,每种时态的肯定,疑问,否定句各一句

求初中所学的八种时态（用法,构成,每种时态的肯定,疑问,否定句各一句
求初中所学的八种时态（用法,构成,每种时态的肯定,疑问,否定句各一句

求初中所学的八种时态（用法,构成,每种时态的肯定,疑问,否定句各一句
一、 一般现在时
1.概念：经常、反复发生的动作或行为及现在的某种状况.
2.时间状语：Always,usually,often,sometimes,every week (day,year,month…),once a week(day,year,month…),on Sundays.
3.基本结构：动词 原形 （如主语为第三人称单数,动词上要改为第三人称单数形式）
4.否定形式：主语/三单+do/does not+V原+其他
5.一般疑问句：用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词.
6.例句:He is always ready to help others.
Do you like it?
I don't like it at all.
二、 一般过去时
1.概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为.
2.时间状语：ago,yesterday,the day before yesterday,last week,last(year,night,month…),in 1989,just now,at the age of 5,one day,long long ago,once upon a time,etc.
3.基本结构：主语+动词或be的过去时+名词
4.否定形式：主语+was/were +not+其他;在行为动词前加didn't,同时还原行为动词.
5.例句：She often came to help us in those days.
Did they arrive at the hotel yesterday?
I didn't know you were so busy.
三、现在进行时
1.概念：现在进行时表示现在或当前一段时间正在进行的动作.可以表示有计划的未来,也就是用现在进行时表示将来.
2.时间状语：now,at the moment ,at the time ,today ,tonight ,this morning ,this afternoon ,this evening ,this week ,this month ,this year ,while ,ect.
3.基本结构：主语+be+v.-ing〔现在分词〕形式
4.例句：The leaves are turning red.
Are they playing football in the playground?
He is not waiting for his brother at all.
四、 过去进行时
1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作.2.时间状语：at this time yesterday,at that time或以when引导的谓语动词是一般过去时的时间状语等.
3.基本结构 主语+was/were +doing +其他
4.例句：At that time she was working in a PLA unit.
Was she reading the book at 12:30?
He wasn't working in his office at that time.
五、 现在完成时
1.概念：过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态.
2.时间状语：yet,already,just,never,ever,so far,by now,since+时间点,for+时间段,recently,lately,in the past few years,etc.
3.基本结构：主语+have/has +p.p（过去分词）+其他
4.例句：The countryside has changed a lot in the past few years.
Have they finished their task?
He hasn't understood yet.
六、 过去完成时
1.概念：以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”.
2.时间状语：Before,by the end of last year (term,month…),etc.until,as soon as
3.基本结构：主语+had + p.p（过去分词）+其他
4.例句：As soon as we got to the station,the train had left.
Had he watched this film before last Sunday?
They hadn't been to Chengdu before the visit.
七、一般将来时
1.概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事.2.时间状语：Tomorrow,next day(week,month,year…),soon,in a few minutes,by…,the day after tomorrow,etc.
3.基本结构：主语+am/is/are +going to + do+其他；主语+will/shall + do+其他
4.例句：He will phone his aunt tomorrow.
Will there be a meeting at school tomorrow?
We won't forget your kindness.
八、 过去将来时
1.概念：立足于过去某一时刻,从过去看将来,常用于宾语从句中.2.时间状语：The next day (morning,year…),the following month(week…),etc.
3.基本结构：主语+was/were +going to + do+其他；主语+would/should + do+其他
4.例句：He said he would go home the next day.
Did he said that he would come the next week?
She didn't expect that she would be late.

初中的时态只有8种 : 8、一般现在时也就是 主语+am/is/are +表语;或主语+动词+宾语(如果动词是不及物就不... 如果句中没有的话就要在前面加相应时态的肋动词（did do等）根据时太来定； 一般时态也不用记得那死。灵...