内容正文:
小学英语语法之时态(一)
时态是一种动词形式,不同的时态用以表示不同的时间与方式。
一般现在时
时态
概念
动词形式
(动词随着主语的改变而改变)
标志性时间
一般现在时
表示通常性、规律性、习惯性、真理性的动作或状态,或者动作有时间规律发生的事件的一种时间状态。
动词原形
(主语为非三单)
always(100%)总是,
usually(80%)通常,
often(60-70%)经常,
sometimes(30%)有时,
never(0%)从不,
on+星期s,
every day/week...
once a day...
动词三单
(主语为三单)
动词三单变化规则:
1.动词一般直接+s
make-makes; ride-rides
2.以s、x、ch、sh、o结尾的动词+es
pass-passes, mix-mixes,
watch-watches, wash-washes,
do-does
3.以元音字母+y结尾的动词, 直接+s,play-plays,
以辅音字母+y结尾的动词,改y为ies;study-studies;
4.特殊情况:have变has;
Be:am,is,are(随着人称变化而变化)
I用am;You用are;
is连着he,she,it
单数/不可数用is;复数名词用are。
I am a student.
You are a student.
They are students.
We are students.
She is a student.
Eg: I always clean my room on Sundays.
They always clean their rooms on Sundays.
We always clean our rooms on Sundays.
She always cleans her room on Sundays.
Mike always cleans his room on Sundays.
Exercise
1. 写出下列动词的三单形式。
water play fly go
cook buy finish drink
do have am climb
study carry wash swim
pick ride open clean
二.根据句意和所给词的适当形式填空。
1. Amy often (play) sports with her friends.
2. Sarah usually (go) shopping on the weekend.
3. I sometimes (cook) dinner for my parents.
4. They often (finish) classes at 4:30 p.m.
5. Chen Jie and Zhang Peng (wash) their bikes once a week.
6. I always (pick) apples in autumn.
7. My brother usually (make) snowmen in winter.
8. My grandfather often (grow) green grapes.
9. This boy usually (eat) breakfast at 7:00 a.m.
10. Those students often (play) football after dinner.
11. Leaves (turn) green in spring.
12. Those pants (be) theirs.
13. My uncle (be) a police officer.
14. We (come) from China.
15. Sarah (study) Chinese every day. Sh