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1、一、一般现在时1、概念:表示经常发生的情况;有规律出现的情况;总是发生的;事实真理。2.时间状语: Always, usually, often, sometimes, every week (day, year, month), once a week (day, year, month), on Sundays (on Mondays), etc.3.基本结构:主语+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+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 dont,如主语为第三人称单数,则用 doesnt,同时还原
2、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。eg:It seldom snows here.这里很少下雪。He is always ready to help others.他总是乐于帮助别人。Action speaks louder than words. 事实胜雄辩。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,
3、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+动词的过去式或 be 的过去式+名词4.否定形式:主语+was / were+not+其他;在行为动词前加didnt,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。eg:She often came to help us in those days.那些天她经常来帮助我们。I didnt know you were so
4、busy.我不知道你这么忙。三、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+其它;主语+will / shall+do+其它4.否定形式:主语+am /is/ are not going to+do;主语+will / shall not do+其它5.一般疑问句:be 放于句首;will / s
5、hall 提到句首。(首字母大写)eg:They are going to have a competition with us in studies.他们将在学习中与我们竞争。It is going to rain.天要下雨了。四、一般过去将来时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+其它;主语+would / should+do+其它4.否定形式:主语+was / w
6、ere+not+going to+do+其它;主语+would/should+not+do.5.一般疑问句:was 或 were 放于句首;would / should 提到句首eg: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。五、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, days, look, listen, etc.3.基本结构:主语+be+doing+其它4.否定形式:主语+b
7、e+not+doing+其它5.一般疑问句:把be动词放于句首。eg:Are you feeling good today?你今天感觉如何?He is doing well in his lessons.在课上他表现得很好。六、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+其它4.否定形式:主语+was/were+not+doing+其它5.一般疑问句:把 was 或
8、were 放于句首。(第一个字母大写)eg:At that time she was working in a company. 那段时间她在一家公司工作。When he came in, I was reading a newspaper. 他进来时,我正在读报纸。七、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 y
9、ears,etc.3.基本结构:主语+have / has+过去分词+其它4.否定形式:主语+have / has+not+过去分词+其它5.一般疑问句:have 或 has 放句首。eg:Ive written an article. 我已经写了一篇论文。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。八、过去完成时1.概念:过去发生或者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:before, by the end of last year
10、 (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.用法:(1)在told, said, knew, heard, thought等动词后的宾语从句中。eg:She said (that) she had never been to Paris. 她告诉我她从来没有去过巴黎。(2)在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。eg:When the police arrived, the thieves had run away. 警察到达时,小偷们早就跑了。(3
11、)表示意向的动词,如hope, wish, expect, think, intend, mean,suppose等,用过去完成时表示原本,未能。eg:We had hoped that you would come, but you didnt. 那时我们希望你能来,但是你没有来。I had hardly opened the door when he hit me. 我刚打开门,他就打了我。(注意:had hardly when. 刚.就.)He had no sooner bought the car than he sold it. 他刚买了这辆车,转眼又卖了。(注意:had no soonerthan 刚 就)