1、牛津英語5a英語語法(三)一般現(xiàn)在時一. 一般現(xiàn)在時行為動詞詞型變化形式一般現(xiàn)在時動詞只有第三人稱有詞形變化，其他人稱動詞均用原形單數(shù)第三人稱動詞變化：多數(shù)在動詞后加splayplayslikelikes ,以s，x，sh，ch，o結(jié)尾的動詞加esgogoeswash-washes,以輔音字母加y結(jié)尾，把y改i再加esflyfliesstudy-studies二. 一般現(xiàn)在時動詞be和 have的變化形式1.動詞Be 叫連系動詞, 連系動詞be的用法：除了第一人稱單數(shù)用am，和第三人稱單數(shù)用is以外，其它人稱用are。I am busy. You are busy. He (She) is b

2、usy. We (You, They) are busy.2.動詞have的用法：除了第三人稱單數(shù)用has以外，其它人稱一律用have。如: I have a pen. You have a pen. She (He) has a pen.We (You, They) have pens.三. 一般現(xiàn)在時的句型1.肯定句構(gòu)成：主語+動詞 (注意人稱變化) +其它成分Ihave a dog. We like the little cat. She sings well.2.否定句構(gòu)成：行為動詞的否定句：主語+助動詞(do/does) + not +動詞原形+其它成分He dosent have

3、a dog.He isnt young.We dont like the little cat.(借助于助動詞do) She doesnt sing well. (借助于助動詞does)3.一般疑問句：A.行為動詞的一般疑問句：助動詞(do/does)+主語+動詞原形 + 其它成分Do you like it? Yes, I do. / No. I dont . Does he(she) like it? Yes, he( she )does. / No, he ( she )doesnt.B. 動詞BE 的一般疑問句Am / Is /Are +主語 + 其它成分Are you a teach

4、er? Yes, I am. / No, I am not.Are they students of your school.Yes they are / No they aren,t.4.特殊疑問句：特殊疑問詞 + 一般疑問句How many students are there in your school?What do you usually do on Sunday?四一般現(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用。如：every year, sometimes, at 5 oclock, on Sunday.I get up at six oclock eve

5、ry day.He gets up at six oclock every day.She smokes too much. I telephone to my parents once a week.2.表達(dá)客觀真理，科學(xué)事實。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。Three and four makes seven.The teacher told us that the earth moves around the sun.Shenyang lies in the north of China.3.在格言或名言警句中。Pride goes before a f

6、all. 驕必敗。Actions speak louder than words.事實用于雄辯。4.表示現(xiàn)在的狀態(tài)、性格、個性。I dont want more, thanks.He is a good student. He is always ready to help others.五.一般現(xiàn)在時其它用法一般現(xiàn)在時表將來1.含有g(shù)o, come, return, arrive, leave, start, begin等動詞的一般現(xiàn)在時表將來。表示在時間上已確定或安排好的事情。The school bus leaves at eight .2.在時間或條件句中。When Tom comes

7、, ask him how to fix the tap.Ill help you as soon as I arrive there.3.在動詞hope,take care that,make sure that等后。I hope she has a good time.Before you leave the room, please make sure that the door is closed.4.時間狀語從句,條件句中,從句中(常含有till , once , as soon as ,when , while , before , after , so long as , by

8、the time , if , in case ,unless , even if , whether , the moment , the minute )Eg. As soon as I get there, I will deal with this matter.Whether he is happy is an important thing to her.5.倒裝句，表示動作正在進(jìn)行Here comes the teacher!= The teacher is coming.There goes the bell. = The bell is ringing.Here comes

9、the car. = The car is coming.一般現(xiàn)在時表過去1."書上"，"報紙上"的敘述。The newspaper says that the president will retire next month.2.敘述往事，使其生動。Napoleons army now advances and the great battle begins.一般現(xiàn)在時表完成1.動詞用一般現(xiàn)在時代替完成時：hear , tell , learn , write , understand , forget , know , find , say, rem

10、ember.Eg.I hear (= have heard) he will go to Paris.I forget (=have forgotten) how to read the word.2.句型 " It is since " = " It has been since "It is (= has been) five years since we last met.一般現(xiàn)在時表進(jìn)行1.句型：Here comes； There goesEg: Look, here comes Mr. Brown.六. 注意事項1.在英國，人們常用have g

11、ot代替have，特別在疑問句和否定句中。2.當(dāng)have如果不表示“有”時，構(gòu)成疑問或否定句時，就借助于助動詞do, does, dont或者doesnt.練習(xí) 一.用詞的適當(dāng)形式填空。1.What time_ his father_(do) the work?2.He _(get) up at five oclock.3._ you _(brush) your teeth every morning.4.What _ ( do ) he usually _( do ) after school?5.Tom _ ( study ) English, Chinese, Maths, Scienc

12、e and Art at school.6. Kitty sometimes _(go) to the park with his sister.7.At eight at night, she _( watch ) TV with her parents.8. _ Mike_( read ) English every day?9.How many lessons_ your classmates_( have ) on Monday?10.We often_ ( play ) football in the playground.二選擇() 1. _ you have a book?A.

13、DoB. AreC. IsD. Have()2. They _ on a farm.A. workingB. is workC. workD. is worked() 3. Does Peter like to watch TV?_. A. Yes, he likeB. No, he doesntC. Yes, hed likeD. No, he likes()4. She doesnt _ her homework in the afternoon.A. doingB. to doC. doesD. do()5. How _ Mr. Brown _ to America?A. do,goB.

14、 is,goC. does,goD. does,goes()6. Wheres my camera? I_ it.A. am not findingB. am not seeingC. cant findD. cant look at()7. How _ he go to work?He _ to work by bike.A. does ;goB. do;goesC. do ;goD. does;goes()8. _ you usually late for school?No, _.A. Do ; I amB. Does ;notC. Are ; Im notD. Are ; I arent()9. _ she _ home at six every day?A. Is , leaveB. Does , leaveC. Is , leavesD. Does ,