八大时态讲解及练习.doc
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1、英语的时态(tense)是一种动词形式,不同的时态用以表示不同的时间与方式,下面就英语中常见的八种基本时态进行阐述,其它的时态都是在这八种时态的基础上结合而成的。 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dont,如主语
2、为第三人称单数,则用doesnt,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(很少) snows here.He is always ready to help others.Action speaks louder than words.6. 动词第三人称单数变化规则 动词第三人称变化的规则与可数名词复数变化的规则相同。 规则一、一般在词尾加-s。 如:looks, puts. reads, sees, skis等。 规则二、以-o, -s, -x, -sh, -ch结尾的加
3、-es。 如:goes, does, misses, passes, mixes, fixes, pushes, wishes, watches, teaches,等。 规则三、以辅音字母加y结尾的,变y为i,再加-es。注意一定是辅音字母加y才变,若是元音字母加y,则直接加-s。 如:fly flies, try tries, fry fries, copy copies buy buys, enjoy enjoys, play plays, say says, pay pays 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
4、, 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。6.例句:She often came to help us in those day
5、s.I didnt 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+doing4.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 tim
6、e 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+doing4.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,
7、sincefor,in the past few years, etc.3.基本结构:have/has + done4.否定形式:have/has + not +d one.5.一般疑问句:have或has。6.例句:Ive 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.
8、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:
9、am/is/are/going to + do;will/shall + do.4.否定形式:was/were + not; 在行为动词前加didnt,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. 补充说明:1.有些词如:go(去),come(来),leave(离开),start(开始)用现在进行时表示将来时. 例如:(1)She is coming here tomorrow. 她明天将要来这儿.
10、(2).When are you leaving here? 你什么时间将要离开这儿?2.Be going to+动词原形+. 表示一个事先考虑好的意图,相当于文中的打算,计划,准备例如:(1).I am going to spend my holiday in Beijing.(这里不能用will) 我打算在北京度假. (2).Where are you going to spend your holiday? 你将要到哪儿度假?3. 客观难以改变的事实,用will,而不用be going to .例如:(1).It will rain tomorrow. 明天将要下雨. (2).It wi
11、ll be Teachers Day the day after tomorrow. 后天将是教师节. (3).My birthday will come. 我生日将要到了.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.
12、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 一般现在时态练习巩固 1. 写出下列动词的三单形式 go_ catch_ brush(刷)_ wash_ do_ like_ have_ watch_ drink _ fly_ say_ learn _ eat_ read_ sing_ buy_ study_ stay _ make _ look _ pass_ carry _ come_ plant(种植)_ t
13、each_ buy_ 2. 用括号内动词的适当形式填空。 1. We often_(play) in the playground. 2. He _(get) up at six oclock. 3. _you_(brush) your teeth every morning. 4. What_ (do) he usually_ (do) after school? 5. Danny_(study)English,Chinese,Maths, Science and Art at school. 6. Mike sometimes _(go) to the park with his sist
14、er. 7. At eight at night, she often_(watch) TV with his parents. 8. _ Mike_(read) English every day? 9. How many lessons_your classmate_(have) on Monday? 10. What time_his mother_(do) the housework? 3. 选择题 ( )1. I _to school at 7:00 in the morning. A. go B. going C. goes ( )2. They _books every day
15、in the library. A. reads B. read C. reading ( )3. The monkey_ eating bananas very much. A. like B. likes C. liking ( )4. My father _to read newspaper after supper every day. A. like B. likes C. liking ( )5. I like watching TV, but my mother _like it. A. dont B. doesnt C. does ( )6. _ your father dri
16、nk milk every day? A. do B. are C. does ( )7. We will go shopping if it_ tomorrow. A. dont rain B. didnt rain C.doesnt rain D. isnt rain ( )8. He said the sun _in the east and _in the west. A rose; set B rises; sets C rises, set D rise; sets ( )9.Wang Mei _ music and often _ to music. A like; listen
17、 B likes; listens C like; are listening D liking listen ( )10. Jenny_ English every evening. A has study B studies C study D studied 4. 改错(划出错误的地方,将正确的写在横线上) 1. Is your brother speak English? _ 2. Does he likes going fishing? _ 3. He likes play games after class. _ 4. Mr. Wu teachs us English. _ 5.
18、She dont do her homework on Sundays. _ 5. 把下列句子变成一般疑问句(并作肯定和否定回答)、否定句 例:I like cooking. Do you like cooking? Yes, I do. No, I dont. I dont like cooking. 1. My friends like playing soccer. 2. They speak English every day. 3. Daniel watches TV every evening 4. John is from Canada. 5. Tom does his home
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