一般现在时语法讲解

1、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。时间状语： often经常， usually通常， always总是， every(day, week,month,year) ，sometimes有时， on weekends, 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。三单变化： 1.多数在动词后 s : play playslike likes（1）直接在动词词尾加 -s.ask-askswork-worksget-getsstay-stays（2）以字母 s, x, ch, sh 或 o 结尾的动词，在词尾直接加 -es.watch

2、-watcheswish-wishesfix-fixesdo-doesgo-goespass-passes（3）以 “辅音字母加 - y”结尾的动词，要先变y 为 i 再加 -es.try-triesstudy-studiescry-criesfly-flies情况构成方法读音例词清辅音后读 /s/浊一般情况加 -s辅音和元音后读swim-swims ； help-helps ；like-likes/z/以辅音字母 +o 结加 -es读 /z/goes,does尾的词以 s,sh,ch,x 等结尾的词加 -es读 /iz/watches,washes以辅音字母 +y 结变 y 为 i 再加 e

3、s读 /z/study-studies尾的词不规则变化 have变 have 为 has 变 behave-has be-am,is,are和 be 动词为 am,is,are2.不规则变化：be- am,is,arehave-has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1) 经常性或习惯性的动作，常与表示频度的时间状语连用。时间状语：every, sometimes,at, on SundayI leave home for s

4、chool at 7 every morning.2) 客观真理，客观存在，科学事实。The earth moves around the sun.Shanghai lies in the east of China.3) 表示格言或警句中。Pride goes before a fall.骄者必败。当主语是第三人称单数时：1、动词变相应的第三人称单数形式2、肯定句主语+动词 s+其它3、否定句主语+doesn't+动词原形 +其它4、一般疑问句Does+主语 +动词原形 +其它5、肯定回答Yes，主语 +does6、否定回答No ，主语 +doesn't7、特殊疑问句特殊疑问

5、词+一般疑问句当主语不是第三人称单数时：1、肯定句主语 +动词原形 +其它2、否定句主语 +don't+ 动词原形 +其它3、一般疑问句Do+ 主语 +动词原形 +其它4、要注意，句式结构错则全都错。5、谓语动词的形式：do/does三、一般现在时的结构一般现在时的结构肯定式疑问式I work.Do you work?You work.Do you work?We work.Do you work?They work.Do they work?He(She,It) works.Does he(she,it) work?否定式否定疑问式I don't work.Don't

6、 you work?You don't work.Don't you work?We don't work.Don't you work?They don't work.Don't they work?He(She,It) doesn't work.Doesn't he(she it)work?练习：1）用动词的适当形式填空1.I like _ (swim).2.He _(read) English every day.3.We _(go)to school at seven in the morning.4.Mike_(go)t

7、o school at seven in the morning.5.My mother_(like) _(go) shopping.6.I can _(draw) many beautiful pictures.7.She_(make) a model plane.8.Do you _(like)_(run)?9.Does he_(like)_(jump) ?10.Does Nancy_(grow)flowers on Saturday ?11.The teachers_(like)_(dance).12.The teacher_(like)_(dance).13.The students_

8、(speak) English in class.14.The student_(speak) Chinese after class.15. Let's_and play football . ( go )16. He_ like swimming . ( not )17. I'm sorry _that . ( hear )18. He_making soup . ( be good at )19. He _ making soup. (do well in )20. _you study English at school ? Yes ,I_. ( do )21. _yo

9、ur sister study English at school ?No,she_.(do)22. How _ Scott feel today? . ( do )23. Why_Tom absent today ? ( be ) 2）用所给的人称改写句子1.I take photos on Sunday. ( Mike)2.Wegrow（种植） beautiful flowers. (she)3.They like collecting stamps（集邮） . (Ben)4.I listen to music carefully. (my aunt)5.You like making a

10、 model ship(轮船模型 ). (Helen)6.We clean the classroom every day. (he)7.They look after（照顾） the pandas. (Mr Wang)8.I draw a tree and some flowers. (Nancy)9.We go to bed at eight. ( my sister)10.I read newspapers in the evening. (Mr Green)Eg：肯定句HeiswatchingTVnow.Eg：肯定句We areworking.否定句HeisnotwatchingTVn

11、ow.否定句We arenotworking.一般疑问句IshewatchingTVnow?一般疑问句Areyouworking？肯定回答Yes,heis.肯定回答Yes，weare.否定回答No, he isn t.否定回答No，wearent.Eg：肯定句TomandMikeareplayingfootballrightnow.否定句TomandMikearentplayingfootballrightnow.一般疑问句Are Tom and Mike playing football right now？肯定回答Yes，theyare.否定回答No，theyarent.课堂练习：（1）.

12、Theyaresingingintheclassroom.否定句：_一般疑问句：_肯定回答：_否定回答：_（2）.用括号中动词的适当形式填空1.Myparents_（watch）TV now.2.Look.Threeboys_（run）.3._yourdog_now?（sleep）4. _ you_（listen）tomusic?Yes,Iam.（3）选择题1.I tseight o clockThe. students _ an English class.A. haveB. havingC.ishavingD.arehaving2.We _musicandoften_tomusic.A.l

13、ike/listenB.likes/listensC. like/ are listening动词变现在分词的规则：1：1、定义：表示现在（说话瞬间）正在进行的动作。2、时间提示词：now（=rightnow），look,listenIt s o clock等3、使用情况：表示说话时正在进行的动作及行为。4、现在进行时的结构及句型变化（1）结构：谓语动词结构：be(is,am,are)doing（现在分词）（2）现在进行时的句型变化：肯定句:主语+be+doing+其它.否定句：主语+be+not+doing+其它.(be后加not)一般疑问句:be主语doing其它？（be动词提前）肯定回答:Yes,主语+be.否定回答:No,主语+be+not.再试一次有个年轻人去全球著名的微软公司应聘，而该公司并没有刊登过招聘广告。见总经理疑惑不解，年轻人用不太娴熟的英语解释说自己是碰巧路过这里，就贸然进来了。总经理