牛津英语5A英语语法(三)一般现在时

1、牛津英语5a英语语法(三)一般现在时一. 一般现在时行为动词词型变化形式一般现在时动词只有第三人称有词形变化，其他人称动词均用原形单数第三人称动词变化：多数在动词后加splayplayslikelikes ,以s，x，sh，ch，o结尾的动词加esgogoeswash-washes,以辅音字母加y结尾，把y改i再加esflyfliesstudy-studies二. 一般现在时动词be和 have的变化形式1.动词Be 叫连系动词, 连系动词be的用法：除了第一人称单数用am，和第三人称单数用is以外，其它人称用are。I am busy. You are busy. He (She) is b

2、usy. We (You, They) are busy.2.动词have的用法：除了第三人称单数用has以外，其它人称一律用have。如: I have a pen. You have a pen. She (He) has a pen.We (You, They) have pens.三. 一般现在时的句型1.肯定句构成：主语+动词 (注意人称变化) +其它成分Ihave a dog. We like the little cat. She sings well.2.否定句构成：行为动词的否定句：主语+助动词(do/does) + not +动词原形+其它成分He dosent have

3、a dog.He isnt young.We dont like the little cat.(借助于助动词do) She doesnt sing well. (借助于助动词does)3.一般疑问句：A.行为动词的一般疑问句：助动词(do/does)+主语+动词原形 + 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. 动词BE 的一般疑问句Am / Is /Are +主语 + 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.特殊疑问句：特殊疑问词 + 一般疑问句How many students are there in your school?What do you usually do on Sunday?四一般现在时的用法1.经常性或习惯性的动作，常与表示频度的时间状语连用。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.表达客观真理，科学事实。如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。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. 骄必败。Actions speak louder than words.事实用于雄辩。4.表示现在的状态、性格、个性。I dont want more, thanks.He is a good student. He is always ready to help others.五.一般现在时其它用法一般现在时表将来1.含有go, come, return, arrive, leave, start, begin等动词的一般现在时表将来。表示在时间上已确定或安排好的事情。The school bus leaves at eight .2.在时间或条件句中。When Tom comes

7、, ask him how to fix the tap.Ill help you as soon as I arrive there.3.在动词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.时间状语从句,条件句中,从句中(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.倒装句，表示动作正在进行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.一般现在时表过去1.书上，报纸上的叙述。The newspaper says that the president will retire next month.2.叙述往事，使其生动。Napoleons army now advances and the great battle begins.一般现在时表完成1.动词用一般现在时代替完成时：hear , tell , learn , write , understand , forget , know , find , say, remember.Eg.I hear (= have

10、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.一般现在时表进行1.句型：Here comes； There goesEg: Look, here comes Mr. Brown.六. 注意事项1.在英国，人们常用have got代替have，特别在疑问句和否定句中。2.当have如果不表示“有”时，构成疑问或否定句时，就借助

11、于助动词do, does, dont或者doesnt.练习 一.用词的适当形式填空。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, Science and Art at school.6. Kitty sometimes _(go) to the

12、 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.二选择() 1. _ you have a book?A. DoB. AreC. IsD. Have()2. They _ on a farm.A. workin

13、gB. are workingC. 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. is,goC. does,goD. does,goes()6. Wheres my came

14、ra? 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 ,