一般现在时,现在进行时,一般过去时讲解

1、一般过去时态1 根本用法1. 一般过去时通常用来表示过去发生的动作或存在的状况.如：-Where were you last week 上周你在哪儿-I was at my uncle's home in the countryside.上周我在乡下的叔叔家.2. 有些情况,发生时间没有明确标明,但实际上是过去发生的,应用过去时态；另外,在谈到已故去 的人时,也多用过去时.如：He bought a cat, and now they are good friends.他买了一只猫,现在他们是好朋友了.Lu Xun was a great writer.鲁迅是一位伟大的作家.2 时间状

2、语与一般过去时连用的时间状语有： yesterday 昨天,last night 昨晚,last week 上个星期, four days ago 四天前,in 2002 在 2002 年,just now 刚刚,the day before yesterday前天等.如：He went to the park yesterday.她昨天去了花园.I was ten years old in 2001. 我 2001 年才 10 岁.3动词的过去式在一般过去时态中会涉及到动词的过去式,大家要掌握规那么动词的过去式的变化规那么.其根本的变化规那么如下： 一般情况下,在动词原形后直接ed.如：pl

3、ay -played , look-looked. 以e结尾的动词在其后加 d.如：like -liked, use-used. 与辅音字母加 y结尾的动词,把 y变成i再加ed.如：carry - carried, marry - married . 以重读闭音节或r音节结尾,末尾只有一个辅音字母时,双写这个辅音字母,再加ed.如：stop -topped, prefer-preferred .当然,刚刚提到的都是规那么动词的构成,我们还学过许多不规那么动词的过去式形式.如：am - was,are - were, put - put, see - saw, eat - ate等,这些可需要

4、我们在课下牢牢记住哟！亠般现在时态一、定义与讲解一般现在时：表示经常性的事情,经常性的动作或一般性事实.二、一般现在时的用法表示经常性或习惯性的动作或存在的状态；表示客观事实或普遍真理；在时间、条件等状语从句中,用现在时表示将来；在某些以 here , there开头的句子中,用一般现在时表示正 在发生的动作三、时间状语：often 经常,usually 通常,always 总是,every 每个,sometimes 有时,at在几点钟只有在第三人称单数用动词的“三单变化,其他用动词的原形.动词三单变化规那么：1. 多数在动词后+ s play plays like likes(1) 直接在动

5、词词尾加-s.ask-asks work-works get-gets stay-stays(2) 以字母s, x, ch, sh或o结尾的动词,在词尾直接加 -es.watch-watches wish-wishes fix-fixes do-doesgo-goes pass-passes(3 )以“辅音字母加-y 结尾的动词,要先变y为i再加-es.try-tries study-studies cry-cries fly-flies情况构成方法、+ &读曰例词一般情况加-s清辅音后读Isl浊swim-swims ;辅音和兀音后读/z/help-helps ； like-likes

6、以辅音字母+0结尾的词加-es读/z/goes,does以s,sh,ch,x等结尾的词加-es读 /iz/watches,washes以辅音字母+y结尾的词变y为i再加es读/z/study-studies不规那么变化have和be动词变have 为has变be 为 am,is,arehave-has be-am,is,are2.不规那么变化：be- is are have-has四、一般现在时的结构般现在时的结构r 1、,冃定式疑问式否认式否认疑问式I work.Do you workI don't work.Don't you workYou work.Do you wor

7、kYou don't work.Don't you workWe work.Do you workWe don't work.Don't you workThey work.Do they workThey don't work.Don't they workHe(She,lt)Does he(she,it)He(She,It) does n'tDoes n't he(she it)works.workwork.work现在进行时态、概念、现在进行时表说话时正在进行或发生的动作,也可表示当前一段时间内的活动或现阶段正在进行的动作结

8、构：助动词 be ( am / is / are ) +现在分词 .二、 现在分词的构成：1. 大多数动词后可在动词后直接加-ing Eg: carry-carrying,catch-catching,drink-drinking, enjoy-enjoying hurry-hurrying ,do-doing , r ead-reading , think-thinking2. 如果动词以-e结尾,那么去掉-e再加-ing,如 come-coming , have-having , make-making,ride-riding,write-writing,take-taking,use-u

9、sing 3. 如果动词只有一个元音字母,而其后跟有一个辅音字母时,将此辅音字母双写 ,再加 -ing如： hit-hitting,let-letting, put-putting,run-running,sit-sitting 4. 如果动词有两个音节,且重音在第二个音节上,那么末尾的辅音字母须双写,再加-ing,如 : for'get-forgetting, pre'fer-preferring,up 'set-upsetting 试比拟 'benefit/benfi ting, 'differ/differing, 'profit/prof

10、iting, 这些词的重音在第一个音节上,因此其末尾的辅音字母不双写5. 以-ic 结尾的动词,应先把 -ic 变为 -ick,再力口 -ing, eg: panic/panicking,picnic/picnicking, 但 lie/lying ,die/dying,tie/tying 是特殊变化要记住三、句型结构：1.现在进行时的肯定形式、 否认形式、 疑问形式及其答复 ,所有变化都表达在助动词 be ( is / am / are ) 上1) 现在进行时的肯定形式：主语+be(am/ is/are)+doing+ 其他成分I am singing . They are writing

11、.2) 现在进行时的否认形式：主语+be(am/ is/are)+not +doing+其他成分I am not singing . They aren't writing .3) 般疑问句及答复：be(am/ is/are)+主语+doing+其他成分Am I singing Yes ,you are . / No ,you aren't .Are they writing Yes ,they are . / No ,they aren't .4) 特殊疑问句及答复：特殊疑问词+be(am/ is/are)+主语+doing+其他成分What are you doin

12、g We are playing 要求就提问内容具体答复 .3.说明：不是所有动词都能用现在进行时态的,如：see、like、want、know等动词往往都不用进行时态.四用法：1. 表示现在指说话人说话时正在发生的事情.往往与now,at the momentjust等副词连用,以示强调. We are waiting for you What are you doingSome one' s knocking at the door.2. 正在进行着的动作可视为未完成的动作.He' s talking to his friends in the classroom.可用 s

13、till 一词强调动作的持续性He' s still talking to his friends in the classroom.3. 表示长期的或重复性的动作,说话时动作未必正在进行.Mr. Black is writing another article.Don' t take that book away. Your father's using it.She is learning piano under Mr. Black.4. 现在进行时可用来表示不会长期发生的动作或情况,或被认为在短期内正在进行的动作 或存在的情况：What' s your b

14、rother doing these days He' s studying English at Oxford University.5. 现在进行时也可以用来表示当前的动向：People are becoming more and more beautiful these days.6. 表示渐变的动词有：become,turn,get,grow,run,go,begin 等.The leaves are turning brow.It' s getting colder and colder.7. 与always,constantly,forever等词连用,表反复发生的

15、动作或持续存在的状态,往往带有说话 人的主观色彩.You are always changing your mind.8. 现在进行时以及be going to可以表示为将来安排好的活动和事件We' re spendingn ext win ter in Chi na.用arrive,come,go,leave等动词的现在进行时描写行程安排,也通常有"将到达和"将离去的意思：He' s arriving tomorrow morning.9. 当现在进行时表示某事发生的次数过多时,那么有时含有抱怨,讨厌,赞扬等的意思：He is always singing

16、 at night,and we can ' t fall asleep late at night.、写出以下动词的过去式:二、2. enjoy 5. have三、(am) 8. want9. talk四、12. take13. do14. get15. catch五、二、用所给动词正确形式填空.六、1. My mother(buy) a lot of postcards yesterday.七、2. The twins(be) thirteen years old two years ago.八、3. I(get) up at half past six this morning.

17、九、4. Jim(help) an old man carry his bag just now.十、5. There(be) a King many years ago.十、6. Did you(have) a test yesterday十二、7. I(come) to school at seven yesterday.十三、8. Once he(be) a shop assistant.9. The bat(like) sleep ing in the day and(fly) out for food atn ight.does Mr. Lin(live) -He(live) in

18、the USA.11. Mother always(do) some wash ing after meals.twins(wear) a pair of glasses every day.13. A pla ne always(fly) high in the sky.usually(get) up early in the morning.15. The two writers(visit) each other once a year.(play) football every day.、选择填空.()1. My pare nts were hav ing supper whe n I

19、back home.A. come B. came C. coming D. comes()2. My sisterthe Youth League last year.A. joi n B. joi ns C. joi ned D. joi ning()3. Fatherhis coat and went out.A. put on B. puts on C. putted on D. puted on()4. The teacherme a questi on just now.A. ask B. asked C. ask ing D. asks()5. This is my ninth birthday and Ieight years old last year.A. was B. were C. is D. are()6. Did youa letter to me last mon thA. write B. writes C. writing D. wrote()7. Mothera story about a hungry wo