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 ）基本用法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

2、大的作家。（2 ）时间状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 （刚才）,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，大家要掌握规则动词的过去式的变化规则。其基本的变

3、化规则如下： ？一般情况下，在动词原形后直接ed。如：play -played , look-looked?。 ？以e结尾的动词在其后加 d。如：like -iked, 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-stopped, prefer-preferred 。当然，刚才提到的都是规则动词的构成，我们还学过许多不规则动词的过去式形式。如：am - was,are - were, put

4、 - put, see - saw, eat - ate等，这些可需要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。动词三单变化规则：1. 多数在动

5、词后+ s play plays like likes(1) 直接在动词词尾加-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-swim

6、s ;辅音和兀音后读/z/help-helps ； like-likes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不规则变化have和be动词变have 为has变be 为 am,is,arehave-has be-am,is,are2.不规则变化：be- is are have-has四、一般现在时的结构般现在时的结构r 1、，冃定式疑问式否定式否定疑问式I work.Do you work?I don't work.Do

7、n't you work?You work.Do you work?You don't work.Don't you work?We work.Do you work?We don't work.Don't you work?They work.Do they work?They don't work.Don't they work?He(She,lt)Does he(she,it)He(She,It) does n'tDoes n't he(she it)works.work?work.work?现在进行时态一、概念、现

8、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 , read-reading , think-thinking2. 如果动词以-e结尾,则去掉-e再加-ing,如 come-coming , have-having , make-making,r

9、ide-riding,write-writing,take-taking,use-using 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，则末尾的辅音字母须双写，再加-ing,如 : for'get-forgetting, pre'fer-preferring ,up 'set-upsetting 试比较 'benefit/benfi tin

10、g, 'differ/differing, 'profit/profiting, 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、 否定形式、 疑问形式及其回答 ,所有变化都体现在助动词 be ( is / am / are ) 上1) 现在进行时的肯定形式：主语+be(am/ is/are)

11、+doing+ 其他成分I am singing . They are writing .2) 现在进行时的否定形式：主语+be(am/ is/are)+not +doing+其他成分I am not singing . They aren't writing .3) 般疑问句及回答： 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）特殊疑问句及回答：特

12、殊疑问词+be（am/ is/are）+主语+doing+其他成分What are you doing ? We are playing （要求就提问内容具体回答）.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 moment,just 等副词连用 ,以示强调 We are waiting for you？What are you doing?Some one's knocking at the door2. 正在进行着的动作可

13、视为未完成的动作。He's talking to his friends in the classroom.可用 still 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

14、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 brother 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

15、colder and colder.7. 与 always,constantly,forever 等词连用 ,表反复发生的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 spendingnext winter in China. 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

16、现在进行时表示某事发生的次数过多时,则有时含有抱怨 ,讨厌 ,赞扬等的意思：He is always singing at night,and we can ' t fall asleep late at night.一、写出下列动词的过去式：二、1.go 2. enjoy 3.teach 4.write 5.have三、6.is(am)7.are8. want9. talk10.eat四、11.carry 12. take 13. do 14. get 15.catch五、二、用所给动词正确形式填空。六、1. My mother(buy) a lot of postcards yes

17、terday.七、2. The twins(be) thirteen years old two years ago.八、3. I(get) up at half past six this morning.九、4. Jim(help) an old man carry his bag just now.十、5. There(be) a King many years ago.十一、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 assis

18、tant.9. The bat(like) sleep ing in the day and(fly) out for food atn ight.10. -Where does Mr. Lin(live)? -He(live) in the USA.11. Mother always(do) some wash ing after meals.12. The twi ns(wear) a pair of glasses every day.13. A pla ne always(fly) high in the sky.14. Gra ndpa usually(get) up early i

19、n the morning.15. The two writers(visit) each other once a year.16.1(play) football every day.三、选择填空。()1. My pare nts were hav ing supper whe n Iback 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

20、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 th?A. write B. writes C. writing D. wrote()7. Mothera story about a hungry wolf ye