否定形式:主语 + am/is/are + not + 其他(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)。
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。
概念:表示过去某个时间内(或某一段时间内)发生的动作或存在的状态,过去经常或反复发生的动作。
时间状语:ago, yesterday, the day before yesterday, last week, last(year, night, month…),in1989,just now, at the age of 5,one day, long long ago, once upon a time, etc.
基本结构:主语 + 动词的过去式或be的过去式+名词。
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)。
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。
例句:She often came to help us in those days.那些天她经常来帮助我们。I didn't know you were so busy.我不知道你是这么忙。
概念:表示将要发生的动作、打算、计划或准备做某事。
标志:Tomorrow, soon, in a few minutes, ,the day after tomorrow, etc.
基本结构:(1)主语 + am/is/are + going to + do sth(2)主语 + will/shall + do sth
否定形式:在系动词is/am/are或情态动词will/shall后加not
一般疑问句:be放于句首;will/shall提到句首。【注意首字母大写】
例句:They are go-ing to have a competition with us in studies.他们将与我们在研究方面比一赛。It is going to rain.天要下雨了。
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:主语 + was/were + going to + do + 其它;主语 + would/should + do +其它
否定形式:主语 + was/were + not + going to + do; 主语 + would/should + not + do.
一般疑问句:was或were放于句首;would/should 提到句首。
例句:He said he would go to Beijing the next day.他说他第二天要去北京。I asked who was going there.我问,谁要去那里。
概念:表示现在(说话时)或当前阶段正在进行或发生的动作。
时间状语:Now, at this time, days, etc. look, listen
否定形式:主语 + be + not +doing + 其它
例句:How are you feeling today? 你今天感觉如何 ?He is doing well in his lessons.在课上他表现得很好。
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。
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:主语+was/were +doing +其它
否定形式:主语+was/were + not +doing+其它
一般疑问句:把was或were放于句首。(第一个字母大写)
.例句:At that time she was working in a PLA unit.那段时间她在人民解放军部队工作。When he came in, I was reading a newspaper.他进来时,我正在读报纸。
概念:表示将来某一时间正在进行的动作,或表示要在将来某一时间开始,并继续下去的动作。常用来 表示询问、请求等。
时间状语:Soon, tomorrow, this evening,on Sunday, by this time,in two days, tomorrow evening
.基本结构:主语 + shall/will + be + 现在分词 + 其它
否定形式:主语 + shall/will + not + be + 现在分词 + 其它
例句:This time next day they will be sitting in the cinema.下一天的这个时间,他们正坐在电影院。He won't be coming to the party.他不去参加聚会了。
概念:表示就过去某一时间而言,将来某一时刻或某一段时间正在进行的动作,主要用于宾语从句中, 尤其多用于间接引语中。
基本结构:should/would + be + 现在分词
例句:He said he could not come because he would be having a meeting.他说他不能来因为要开会。They said they would be coming.他们说了他们将要来。
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。
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.
基本结构:主语 + have/has + p.p(过去分词) + 其它
否定形式:主语 + have/has + not + p.p(过去分词) + 其它
例句:The countryside has changed a lot in the past few years.在过去的几年,农村发生了巨大的变化。I've written an essay.我已经写了一篇论文。
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:主语 + had + p.p(过去分词) + 其它
否定形式:主语 + had + not +p.p(过去分词) + 其它①肯定句:主语 + had + p.p(过去分词) + 其它②否定句:主语 + had + not + p.p(过去分词) + 其它③一般疑问句:Had +主语 + p.p(过去分词)+其它④特殊疑问句:特殊疑问词 + 一般疑问句
例句:As soon as we got to the station, the train had left.当我们到车站的时候,火车已经开走了。By the end of last month, we had reviewed four books.到上个月底,我们已经复习了四本书。
时间状语:by the time of; by the end of + 时间短语(将来);by the time + 从句(将来)
基本结构:主语 + be going to/will/shall + have + p.p(过去分词) + 其它
例句:By the time you get back, great changes will have taken place in this area.到你回来的时候,就将发生巨大的变化