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热文wearing相关解释(wearing什么意思)

英语共有十六种时态,其表现形式如下(以study为例):

一般时

进行时

完成时

完成进行时

现在

study

studies

am studying

is studying

are studying

have studied

has studied

have been studying

has been studying

过去

studied

was studying

were studying

had studied

had been studying

将来

shall study

will study

shall be studying

will be studying

shall have studied

will have studied

shall have been studying

will have been studying

过去将来

should study

would study

should be studying

would be studying

should have studied

would have studied

should have been studying

would have been studying

时态(Tense)是表示行为、动作和状态在各种时间条件下的动词形式。因此,当我们说时态结构的时候,指的是相应时态下的动词形式。

英语时态分为16种:一般现在、一般过去、一般将来、过去将来时,以及这四者的进行时、完成时和完成进行时。

一. 一般现在时

用法:

A) 表示现在发生的动作、情况、状态和特征。B) 习惯用语。C) 经常性、习惯性动作。

D) 客观事实和普遍真理。尤其要注意,如果前后文不是一般现在时,则无法保持 主句、从句时态一致。

E) 表示一个按规定、计划或安排要发生的动作,(仅限于某些表示来、去、动 、停、开始、结束、继续等的动词 )可以与表示未来时间的状语搭配使用 。常见的用法是:飞机、火车、轮船、汽车等定期定点运行的交通方式。

例:The next train leaves at 3 oclock this afternoon.

(下一趟火车今天下午3点开车。)

How often does this shuttle bus run? (这班车多久一趟?)

F) 在时间和条件状语从句里经常用一般现在(有时也用现在完成时)表示将来事情

时间状语:

always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, etc.

基本结构:①be动词;②行为动词

否定形式:①am/is/are+not;②此时态的谓语动词若为行为动词,则在其前加dont,如主语为第三人称单数,则用doesnt,同时还原行为动词。

一般疑问句:①把be动词放于句首;②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。

二. 一般过去时

用法:

A) 表示过去某个时间发生的动作或情况。

B) 表示过去习惯性动作。特别是由would/ used to do表达的句型,本身表示的 就是过去时。

He used to visit his mother once a week.(他以前总是每周看望一次他的母亲。)

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.

基本结构:①be动词;②行为动词

否定形式:①was/were+not;②在行为动词前加didnt,同时还原行为动词。

一般疑问句:①was或were放于句首;②用助动词do的过去式did提问,同时还原行为动词。

三. 现在进行时(be doing)

概念:表示现阶段或说话时正在进行的动作及行为。

时间状语:now, at this time, these days, etc.

基本结构:am/is/are+doing

否定形式:am/is/are+not+doing.

一般疑问句:把be动词放于句首。

四、过去进行时:

用法:

A) 表示在过去一个比较具体的时间正在发生的动作。

例:Mary was listening to light music 10 minutes ago.(10分钟前,玛丽正在听轻音乐。)

B) 如果when, while这样的时间状语引导词所引导的主从句之一是一般过去时,则另一个句子常用过去进行时。

例:I was washing my hair when you knocked at the front door.(你敲前门时我正在洗头发。)

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。

基本结构:was/were+doing

否定形式:was/were + not + doing.

一般疑问句:把was或were放于句首。

五、现在完成时(have done)

用法:

A) 表示动作到现在为止已经完成或刚刚完成。

B) 表示从过去某时刻开始,持续到现在的动作或情况,并且有可能会继续延续下去。此时经常用延续性动词。时间状语常用since加一个过去的时间点,或for加一段时间,或by加一个现在时间。

注意事项

现在完成时是联系过去和现在的纽带。现在完成时和过去时的区别在于:现在完成时强调动作的动态,或受动态的影响,是动态的结果,对现在有影响;过去时只表示过去的某个具体时间里发生的动作,与现在没有联系。

时间状语:recently, lately, since…for…,in the past few years, etc.

基本结构:have/has + done

否定形式:have/has + not +d one.

一般疑问句:have或has。

六. 过去完成时(had done)

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。

时间状语:before, by the end of last year(term, month…),etc.

基本结构:had + done.

否定形式:had + not + done.

一般疑问句:had放于句首

七、一般将来时:

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。

时间状语:tomorrow, next day(week, month, year…),soon, in a few minutes, by…,the day after tomorrow, etc.

基本结构:①am/is/are/going to + do;②will/shall + do.

③、be to do ④ be about to ⑤、一般现在时表将来 ⑥、现在进行时表将来。

否定形式:①was/were + not; ②在行为动词前加didnt,同时还原行为动词。

一般疑问句:①be放于句首;②will/shall提到句首。

分别用法:

A) 基本结构是will / shall do。

例:We shall send her a glass hand-made craft as her birthday gift.

B) 有些动词,如:arrive, be close, come, do, done, go, have, leave, open, play, return, sleep, start, stay等,用于现在进行时,并且通常与一个表示将来时间的时间状语连用,可以表示将来时。

例:My mother is coming to visit me next week and is staying here until May.(我妈妈下周将来看我,并会呆到5月。)

C) 表示打算去……,要……时,可用be going to do。

例:This is just what I am going to say.(这正是我想说的。)

D) 表示即将、正要时,可用be about to do。强调近期内或马上要做的事。

例:Dont worry, I am about to make a close examination on you.

E) "be to do" 表示按计划、安排即将发生某事或打算做某事。

F) 同样可以表示正要、将要的意思的句型是be on the point of doing。

例:The coach is on the point of giving up the game because our team has been scored 7 points. 例:2005年6月大学四级第65题

I was _______ the point of telephoning him when his letter arrived.

A) in B) to C) at D) on

答案是D)。on the point of doing 是固定词组,意思是正要、打算。全句的意思是:当他的信到的时候我正要打电话给他。

注意事项:

在以if, when, as long as, as soon as, after, before, in case, until, unless等连词以及具有连词作用的副词(immediately, the moment, directly)等引导的状语从句,一般用现在时代替将来时。强调延续性或动态时,可用完成时。

例:I hope his health will have improved by the time you come back next year.(我希望到明年你回来的时候,他的身体已经好多了。)

八、过去将来时:

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。

时间状语:the next day(morning, year…),the following month(week…),etc.

基本结构:①was/were/going to + do;②would/should + do.

否定形式:①was/were/not + going to + do;②would/should + not + do.

一般疑问句:①was或were放于句首;②would/should提到句首。

例 I said on Thursday I should see my friend the next day.(我星期四说我将于第二天拜访我的朋友。)

九 现在完成进行时(have been doing)

用法:表示某一动作开始于过去某一时间,延续或重复地出现至今,或将继续延续至将来。

例:We have been working on this project for over a month now.(到目前为止,我们一直在处理那个项目,已经花了一个多月时间了。)

注意事项:与现在完成时相比,现在完成进行时更强调:在从过去到现在的时间里,动作或状态一直持续或一直反复出现。

十、 将来完成时(will have done)

用法:表示从将来的某一时间开始、延续到另一个将来时间的动作或状态,或是发生在某个将来时间,但对其后的另一个将来时间有影响的动作或状态。就好象把现在完成时平移到时间轴的将来时时段一样。其用法从和过去及现在有关,变成了和将来及将来的将来有关。

例 The conference __________ a full week by the time it ends.

A) must have lasted   B) will have lasted C) would last D) has lasted

以下六种时态考察较少

十一. 将来进行时(will be doing)

用法:强调在将来的某个具体时间正在发生的动作或事情。

例:Dont worry, you wont miss her. She will be wearing a red T-shirt and a white skirt at that time.(别担心,你不会认不出她的。她到时会穿一件红色的T恤衫和一条白色的短裙。)

注意事项:由于本时态是由将来时和进行时融合在一起的,所以关于本时态的注意事项,可参考"一般将来时"和"现在进行时"的有关注意事项。

十二、将来完成进行时:shall have been doing ,will have been doing

例:By the end of next month, the project will have been being worked for 3 years. (到下个月底为止,这项工程就已经不停地进行了3年了。)(被动语态)

十三、过去完成进行时:had been doing

例:The old clock had been being taken apart of and fixed up again for several times by my 10-year old son before I came back home.(我回到家之前,我10岁大的儿子已经把这个旧钟表拆卸并重新组装了好几回了。)(此处强调拆卸和组装这两个过去的过去的动作一直在反复进行。)(被动语态)

十四、过去将来进行时:should be doing , would be doing

例:The government promised that a new highway would be being built next July.(政府承诺说第二年7月将有一条新的高速公路正在修建。)(此句的时间状语是具体的将来时间,所以最好用将来进行时。)(此句为被动语态)

十五、 过去将来完成时:should have done , would have done

例:I believed by the end of that year an advanced version of that software would have been developed, but I was wrong.(我坚信到那年年底为止,那个软件的新版本将被开发出来。但是我错了。)(此句为被动语态)

十六、 过去将来完成进行时:should have been doing , would have been doing

例:They said that by the end of the following month, the project would have been being worked for 3 years. (他们说到第二个月底为止,这项工程就已经不停地进行了3年了。)

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