一般現(xiàn)在時的講解及用法

1、,般現(xiàn)在時的講解及用法一、定義與講解1,定義：一般現(xiàn)在時，表示經(jīng)常性的事情，經(jīng)常性的動作或一般性事實。2,只有在第三人稱單數(shù)用動詞的“三單變化”，其他用動詞的原形。注：1）第一人稱（I , we）第二人稱（you）第三人稱（He,She,they,it, 所有的 名字名稱） 單數(shù)（一個人或事物） 復(fù)數(shù)（兩個或兩個以上的人或事物）第三人稱單數(shù)（第三方的單個的人或事物，除了 they）2）三單變化多數(shù)在動詞（不是名詞）后+ s eg: play plays like likes （1）直接在動詞詞尾加-s.ask-asks work-works get-gets stay-stays（2）以字母s

2、, x, ch, sh 或o結(jié)尾的動詞，在詞尾直接加-es.watch-watches wish-wishes fix-fixes do-doesgo-goes pass-passes（3）以“輔音字母加-y”結(jié)尾的動詞，要先變y為i再加-es.（輔音字母： 除a,e,i,o,u 這5個元音字母外的21個字母都是輔音字母； 元音字母力口 -y : stay-stays play-plays say-says buy-buys輔音字母加-y:try-tries study-studies cry-cries fly-flies二、一般現(xiàn)在時的用法1,經(jīng)常性或習(xí)慣性的動作，常與表示頻度的時間狀語連

3、用。時間狀語： every day, sometimes, at ，on Sunday , usually,once a weekI leave home for school at 7 every morning.2,客觀真理，客觀存在，科學(xué)事實The earth goes around the sun.3,表示格言或警句中。Practice makes perfect. 熟能生巧。注意：此用法如果出現(xiàn)在賓語從句中，即使主句是過去時，從句謂語也要用一 般現(xiàn)在時。例：Columbus proved that the earth is round.4,現(xiàn)在時刻的狀態(tài)、能力、性格、個性。Miss

4、wang writes good English but does not speak well.5,在某些以here,there開頭的句子中，用一般現(xiàn)在時表示正在發(fā)生的動作,eg. Here comes a bus .公交車來了注：與一般現(xiàn)在時連用的時間狀語(表示時間的詞或詞組)(1) 表示頻率的副詞： always,often,usually,sometimes.(2) 時間狀語： on Sundays,every day ,every morning ,every year.(3) 表示頻率的詞組： once a year,three times a week.動詞有三種：實義動詞，be

5、動詞，情態(tài)動詞(初一未涉及)5, 一般現(xiàn)在時中，當(dāng)主語是第三人稱單數(shù)，動詞是實義動詞(1)動詞變相應(yīng)的第三人稱單數(shù)形式(2)肯定句主語+動詞s+其它eg.(2011) Bill often gives money to the poor.(3)否定句主語+doesn't+動詞原形+其它eg. Bill often doesn t give money to the poor.(4) 一般疑問句DoesE語+動詞原形+其它eg. Does bill often give money to the poor.肯定回答 Yes,主語+does(Yes,he does)(6)否定回答 No,主

6、語+doesn't(No,he doesn ' t)6,當(dāng)主語不是第三人稱單數(shù)時(動詞沒有三單變化)，動詞是實義動詞(1)肯定句 主語+動詞原形+其它want to marry you.(2)否定句 主語+don't+動詞原形+其它don ' t want to marry you.(3) 一般疑問句Do+主語+動詞原形+其它you want to marry me肯定回答Yes,主語+do(Yes,I do.)否定回答 No,主語+don' t(No,I don ' t.)be動詞的一般現(xiàn)在時有三種形式，即： am, is, are 。1 .如

7、果主語是第一人稱I時，be動詞用amEg.肯定句：I am a student.我是一名學(xué)生。否定句：am not一般疑問句：Am i肯定/ 否定回答：Yes,i am. No i am not.2 .如果主語是you (你，你們)，they (他們，它們，她們)或名詞復(fù)數(shù)(兩個以上的人或物)時，be動詞必須用are。如：肯定句，否定句，一般疑問句及肯定、否定回答You are my good friend.Tom and Lily are my good friends.They are my good friends.are 與主語還可縮寫。如： We are= We're , T

8、hey are =They're, You are = You're。而 are 與 not 可縮寫成 aren't。如：They aren't students.他們不是學(xué)生。但是 am與not不能縮寫。3 .如果主語是單數(shù)名詞、不可數(shù)名詞或單數(shù)第三人稱代詞( he, she, it )時, be動詞用is?？隙ň?否定句/一般疑問句及肯定、否定的回答如:My mother is a teacher.我的媽媽是一名老師。He is a student.他是一名學(xué)生。is 也可與主語縮寫，如：He is = He's, My mother is = My

9、 mother's 等。但是 This is 不可縮寫。而is與not可縮寫成isn't 。如:This isn't a book.這不是一本書。三、課堂練習(xí)鞏固1,主語為第三人稱單數(shù)肯定何： Hegets(get) up at six o' clock.否定旬：doesn' t ,get一般疑問句：Does he get up at six o ' clock.(肯定，否定回答)2,主語為第一人稱I_get_(get)upat six o' clock. 否定旬：I don' t get up at sixo' cloc

10、k.一般疑問句：Do you get up at six o ' clock.(肯定，否定回答)四、課堂強(qiáng)化練習(xí)（一）單項選擇題1, The picture nice.A. looks B. is looked C. look D. is looking2, She down and soon falls asleep.A. live B. lain C. laid D. sits3, The teacher us to come to school on time.A. ask B. asking C. asks D. asked4, John always others.A. he

11、lp B. helping C. helps D. to help5, He for eight hours every day.A. working B. to work C. works D. worked6, You ' d better at home and your homework.A. to stay, do B. stay, do C. to stay, to do D. stay, to do7, He sits down and a rest.A. having B. have C. to have D. has8, Uncle Wang never a cake

12、.A. make B. to make C. making D. makes(二)句子改錯(三)1. Is your brother speak English ?(四)2. Does he likes going fishing ?(五)3. He likes play games after class.(六)4. Mr. Wu teachs us English.(七)5. She don ' t do her homework every evening.五、課后練習(xí)(一)用動詞的適當(dāng)形式填空1. She(go) to school at seveno' clock.2

13、. It ' s 6 o' clock. They are (eat) supper.3. He usually up at 17:00.(get )4. She(live) in Beijing.5. Amy(be) here just now.6. (be)there a flyon the table just now7. My father(watch) TV every evening .8. My father(make) toys these days.9. Amy (read) English every day10. Chen Jie sometimes (g

14、o)to the park with hersister.(二)選擇填空1. I wanthomework now.A. doingB. to do C. to do myD. do myD.2. It's time.A. go to schoolB. play games C. to go hometo do my homeworks3. youthe blackboard Yes, I am.A. Can, clean B. Am, cleaning C. Are, cleaning D. Doclean4. go and help her.A. Let's me B. L

15、et's us C. Let's D. Let's to5. What are they doing They arethings away.A. put B. puting C. putting D. carry6. Do they have a new car Yes,.A .they arehaveC. they don'tD. they do7. He often supper at 6:00 in the evening.A. have B. hasc. is having D. is eating8. It s 6 o clock in the mo

16、rning. He .A. get up B. gets up C. is geting up D. is getting up9. What are you doing I m TV.A. watch B. watches C. to watch D. watching10. We any Chinese classes on Friday.A. are having B. aren t having C. don t have D. are have11. Tom an English class now.A. is having B. has C. having D. have12. A

17、re you playing basketball No, we .A. isn t B. aren t C. not D. don t13. Listen! The girl in the room.A. sings B. singing C. is singing D. are singing14. The boy is to his teacher.A. saying B. speaking C. talking D. telling（三）用括號內(nèi)動詞的適當(dāng)形式填空1. He often (have) dinner at home.2. Daniel and Tommy (be) in

18、Class One.3. We (not watch) TV on Monday.4. Nick(not go) to the zoo on Sunday.5. they (like) the World Cup6. What they often(do) on Saturdays7. your parents (read) newspapers every day8. The girl (teach) us English on Sundays.9. She and I (take) a walk together every evening.10. There (be) some water in the bottle.11. Mike(like) cooking.12. They (have) the same hobby.13. My aunt (look) after her baby carefully.14. Yo