英语各种时态的标志词如看到since选现在完成时!

英语各种时态的标志词如看到since选现在完成时!
英语各种时态的标志词
如看到since选现在完成时!

英语各种时态的标志词如看到since选现在完成时!
一般现在时态：often usually sometimes always
现在进行时态：now look listen
现在完成时态：never ever since ...so far before just already yet
一般将来时; in the future in future tomorrow the day after tomorrow soon this evening this afternoon later

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, on Sundays。
3.基本结构：动词 原形 （如主语为第三人称单数，动词上要加（e）S）。
4...

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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, on Sundays。
3.基本结构：动词 原形 （如主语为第三人称单数，动词上要加（e）S）。
4.否定形式：am/is/are+not;此时态的谓语动词若为行为动词，则在其前加don't,如主语为第三人称单数，则用doesn't，同时还原行为动词。
5.一般疑问句：把be动词放于句首；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：. It seldom snows here.
He is always ready to help others.
Action speaks louder than words.
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(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：be动词；行为动词
4.否定形式：was/were+not;在行为动词前加didn't，同时还原行为动词。
5.一般疑问句：was或were放于句首；用助动词do的过去式did 提问，同时还原行为动词。
6.例句：She often came to help us in those days.
I didn't know you were so busy.
三、 现在进行时：
1.概念：表示现阶段或说话时正在进行的动作及行为。
2.时间状语：now, at this time, these days, etc.
3.基本结构：am/is/are+doing
4.否定形式：am/is/are+not+doing.
5.一般疑问句：把be动词放于句首。
6.例句： How are you feeling today?
He is doing well in his lessons.
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：was/were+doing
4.否定形式：was/were + not + doing.
5.一般疑问句：把was或were放于句首。
6.例句：At that time she was working in a PLA unit.
When he came in, I was reading a newspaper.
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：recently, lately, since…for…,in the past few years, etc.



作者：218.59.157.*2009-3-23 11:19 回复此发言

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2 英语中的八种基本时态
3.基本结构：have/has + done
4.否定形式：have/has + not +d one.
5.一般疑问句：have或has。
6.例句：I've written an article.
It has been raining these days.
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.
3.基本结构：had + done.
4.否定形式：had + not + done.
5.一般疑问句：had放于句首。
6.例句：As soon as we got to the station, the train had left.
By the end of last month， We had reviewed four books
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：am/is/are/going to + do；will/shall + do.
4.否定形式：was/were + not; 在行为动词前加didn't，同时还原行为动词。
5.一般疑问句：be放于句首；will/shall提到句首。
6.例句：They are going to have a competition with us in studies.
It is going to rain.
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：was/were/going to + do；would/should + do.
4.否定形式：was/were/not + going to + do; would/should + not + do.
5.一般疑问句：was或were放于句首；would/should 提到句首。
6.例句：He said he would go to Beijing the next day.
I asked who was going there

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其实各种语态并没有你所说的那种标记词，但是有它的标记动词。
since可以用于现在完成时，也可以用于过去完成时，或者将来完成时。
所以只能说，since一般出现在完成时态中。如：He had fallen for her with her since he was 15.(他15岁那年就爱上她了（用过去完成时表明说这句话的时间背景是在过去爱某个时刻））
完成时态（过去，现在...

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其实各种语态并没有你所说的那种标记词，但是有它的标记动词。
since可以用于现在完成时，也可以用于过去完成时，或者将来完成时。
所以只能说，since一般出现在完成时态中。如：He had fallen for her with her since he was 15.(他15岁那年就爱上她了（用过去完成时表明说这句话的时间背景是在过去爱某个时刻））
完成时态（过去，现在，将来完成时态三种），标记动词为have.
I have left home since 1999.
She will have been a teacher for 10 year next year.
He had been married for 10 years when he was 28.(他28岁时就已经结婚10年了.）
进行时态（过去，现在，将来进行时三种），标记动词为be
I was listening to music when he came in the house.
I am doing my homework now.
I will be doing my homework at that time.
一般时态：过去时，一般现在时，将来时。除了将来时有标记性动词will和be doing形式外，其它两个时态没有标记性动词，时态体现在动词的时态变化上。
I was ten that year.
She loves me.
I'll do. （I am going.)
时态都是由过去时，一般现在时，将来时 搭配 完成时，进行时 而形成的。
所以一般只有3X2＝6种。

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