一般现在时是用法规则详解
一般现在时：表示经常性，习惯性的动作或状态。
时间状语：often 经常，usually通常，always 总是，every每个，sometimes 有时，never从不，seldom 极少
结构：动词原形（第三人称单数+s/es）。
第三人称单数变化：
(1)直接在动词词尾加-s.
ask---asks  work---works
get---gets  stay---stays
(2)以字母s, x, ch, sh或o结尾的动词，在词尾直接加-es.
watch---watches  wish---wishes
fix---fixes  do---does
go---goes  pass---passes
(3)以“辅音字母加 - y”结尾的动词，要先变y为i再加-es.
try---tries study---studies cry---cries fly---flies
2.不规则变化：
be---- is are have----has
二、一般现在时用法
1. 表示经常性，习惯性，永久性的动作或存在的状态。通常与副词sometimes, often, usually, always, every day (year, month ), once (twice, three times) a day，等时间状语连用。
例：
They usually go to school by bike.
I take the medicine three times a day.
She helps her mother once a week.
Mary’s father is a policeman.
There are 50 students in my class.
2. 表示客观真理，科学原理，自然现象，等客观事实或格言，谚语等。
例：
The sun rises in the east and sets in the west every day.
Tomorrow is Tuesday.
三、一般现在时的句型转换
(1)当句子中有be动词或情态动词时，则把be动词或情态动词(can,could等等)提到主语的前面变成疑问句；在be动词或情态动词后面加not变成否定句.
例：
①陈述句：She is a student.
疑问句→ Is she a student?
否定句→ She is not a student.
②陈述句：I can swim.
疑问句→ Can you swim
否定句→ I can not swim.
(2) 当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do (you，以及复数), does(单数she,he,it)变成问句；在主语后谓语动词前加助动词don’t(I,you，以及复数), doesn’t(单数she,he,it)变成否定句，助动词后的动词要变成动词原形。
例：
①陈述句：We get up at 7:00 every morning.
疑问句→Do you get up at 7:00 every morning?
否定句→We don’t get up at 7:00 every morning.
②陈述句：She has a little brother.
疑问句→ Does she have a little brother?
否定句→ She doesn’t have a little brother.
四、语法练习
一、用所给词的正确形式填空。
1. We often___________(play) on the playgound.
2. He _________(get) up at six o’clock.
3. __________you _________(brush) your teeth every morning.
4. What_______ (do) he usually ________(do) after school?
5. Danny _______(study) English, Chinese, Maths, Science and Art at school.
6. Mike sometimes __________(go) to the park with his sister.
7. At eight at night, she ___________(watch) TV with his parents.
8. ________ Mike________(read) English every day?
9. How many lessons ______your classmate_______(have) on Monday?
10. What time _______his mother_________(do) the housework?
11. He often _________(have) dinner at home.
12. Daniel and Tommy___ (be) in Class One.
13. We_______ (not watch) TV on Monday.
14. Nick ________(not go) to the zoo on Sunday.
15. They_________ (like) the World Cup?
16. What _______they often _______(do) on Saturdays
17. Your parents___________ (read) newspapers every day?
join的四种用法18. The girl_________ (teach) us English on Sundays.
19. She and I __________(take) a walk together every evening.
20. There__________ (be) some water in the bottle.
21. Mike _________(like) cooking.
22. They__________ (have) the same hobby.
23. My aunt_________ (look) after her baby carefully.
24. You always_______ (do) your homework well.
25. I________ (be) ill. I’m staying in bed.
26. She________ (go) to school from Monday to Friday.
27. Liu Tao ________(do) not like PE.
28. The child often______ (watch) TV in the evening.
29. Su Hai and Su Yang _________(have) eight lessons this term.
30. They often ___________ (visit) the Great Wall.
二、改句子。
1. Do you often play football after school? (肯定回答)
2. I have many books. （改为否定句）
3. Gao Shan’s sister likes playing table tennis （改为否定句）
4. She lives in a small town near New York. （改为一般疑问句）
5. I watch TV every day. （改为一般疑问句）
6. David has a goal. （改为一般疑问句）
7. Nancy doesn’t run fast. （肯定句）
8. My dog runs fast. (一般疑问句)
三、写出下列动词的第三人称单数形式。
1.  wash________  match_______  guess______
study______    finish________  go________
snow______      carry_______    stop______  see________ 2.  drive _______    let_______        carry______
keep_____        join______        find_______
think________  teach______    catch______
stay_______      begin______    forget_______
have______      lie________        run_______
prefer______    give________    ring_______
dance______    hope_______
四、单项选择。
1. The picture _______ nice.
A. looks
B. is looked
C. look
D. is looking
2. She ______ down and soon falls asleep.
A. live
B. lain
C. laid
D. sits
3. The plane ______ over there.
A. is
B. are
C.am
D. was
4. John always ______ others.
A. help
B. helping
C. helps
D. to help
5 . He ______for eight hours every day.
A. working
B. to work
C. works
D. worked
6. He sits down and ______ a rest.
A. having
B. have
C. to have
D. has
7 Uncle Wang never ______ a cake.
A. make
B. to make
C. making
D. makes
参考答案
一、
1-5：play,gets,do  brush,does do
6-10：goes,watches,does read,does have,dose do 11-15：has,are,don t watch,doesn t go, Do...like 16-20：do ad,teaches,take,is
21-25：likes,have,looks,do,am
26-30：goes,does,watches,have,visit
二、
Yes,I do.
I don t have many books.
Gao Shan s sister doesn t like playing table tennis. Does she live in a small town near New York?
Do you watch TV everyday?
Does David have a goal?
Nancy runs fast.
Does your dog run fast?
三、

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