一般现在时的用法 (2)

1、一般现在时的用法一般情况，过去时表示过去时间，将来时表示将来时间。所以，初学者往往把“一般现在 时”误认为是现在发生的动作，这是片面的，甚至是错误的。事实上，现在时常常指现时间 内的一切时间。它的用法如下：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 school 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

2、或警句中。pride goes before a fall. 骄者必败。注意：此用法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。 例：columbus proved that the earth is round.哥伦布证实地球是圆的。4）现在时刻的状态、能力、性格、个性。i don't want so much.ann writes good english but does not speak well.比较： now i put the sugar in the cup.i am doing my homework now.第一句用一般现在时，用于操作演示或

3、指导说明的示范性动作，表示言行的瞬间动作。 再如：now watch me, i switch on the current and stand back.第二句中的 now 是进行时的标志, 表示正在进行的动作的客观状况，所以后句用一般现在时。同时一般现在时可以表示将来时态，例如：1）下列动词：come, go, arrive, leave, start, begin, return的一般现在时表将来。这主要用来表 示在时间上已确定或安排好的事情。the train leaves at six tomorrow morning.when does the bus start? it star

4、ts in ten minutes.2）在时间或条件句中。when bill comes （不是 will come）, ask him to wait for me.ell write to you as soon as i arrive there.3）在动词 hope, make sure that 等后。i hope they have a nice time next week.make sure that t he windows are closed before you leave the room.动词有三种：动词原形、动词第三人称单数和be动词1、be动词的用法：（有is

5、am are ）2、动词原形：主语是：you和所有复数形式do/doii，t+动词原形主语是第三人称单数。如他、她、它、这、那等等。does/doesnt-f 动词原形 练习一、用be动词填空1 > ifrom china. 2. you english. 3. she a manager.4. the book an interesting. 5. it in shanghai.6. we students. 7. they american. 8. whoyour name?9. my parents workers. 10. there some water in the glas

6、s.11. there a book and two pens on the desk.12. there two pens and a book on the desk.13. i a teacher last year. 14. they workers last week.15. tom and lucy students .16. what you doing ? we cleaning the classroom now.17. the dog my pet. ifs name mimi.18. they watching tv at 7:00 on weekends.19. my

7、motherat home this sunday. my father and i not at home.20. my job to sell computers.二、把下列句子变成一般疑问句，否定句并作肯定否定回答.i am a student.2. he is tom.3. this is a backpack4.that is an english book. 5.these are some pens.6.they are id cards.7.he is a boy.8.it is an apple.9.tom and tim are good boys.11. she work

8、s in the hospitallo.there are some books on the desk.12. they go to school every day. 13. there is an apple on the desk.14. tom carries a box every morning. 15. lucy and i sit in the row.三、写出下列词的单数第三人称形式1、swim2、write3、teach4、go5、do6、eat7、drive8> drink9、 find 10> guess 11、caity 12、worry_13、 fly

9、 14> watch 15、 mend 16> make17> take18> put19、get20、sit21.are_22.see 23.sing 24.have四、用所给动词的适当形式填空1. miss li(like) sleeping in the day.2. listen! who(talk) with your parents?3. the girl( not dance ) on wednesday. she dances on friday.4.he wants (be) a teacher.5.everyone _(say) she is a g

10、ood shop assistant.6.can she(sing) in english?7.they like _(read) under the tree. look! they(sit) there to read.8.lefs_ (eat) lunch together(一起).9.look! a cat _(run) up the tree.10.it's 6:30. my brother(see) a movie.11.sam_ (go) to school at 7:00 every day.12.peggy is(clean) the bedroom now. she

11、 is a good girl.13.wheremr. green(live) ? hein london.14.you_ (clean) your bedroom? no, tm not. i'm cleaning the living room.15. _nancy _(talk) on the phone? no, she isn't. she(eat) lunch now.三、选择填空( )1. father usually his newspaper after dinner.a. read b. reads c. reading d. is reading( )2.

12、 the blacks oftento the cinema on saturday evenings.a. go b. goes c. is going d. are going()3.look! the boywith his mother in the pool.a. is swimming b. is swiming c. are swimming d. are swiming( )4. what is tom doing in the classroom?hesomething on the blackboard.a. draws b. draw c. is drawing d. are drawing.()5.old tom usuallyup at six andsports in the garden.a. gets, dos b. gets, does c. get, does d. gets, do()6. it's ten o'clock and jackstill(仍然)his homework.a. is, do b. is, doing c. are, do d. are,