内容正文:
一般现在时
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.
1. 表示经常性、习惯性,永久性的动作(v.)或存在的状态(be)。
通常与频度副词sometimes, often, usually, always, every day (year, month ), once (twice, three times) a day,等时间状语连用。
一般现在时
The sun rises in the east and sets in the west every day.
Tomorrow is Tuesday.
One minute on the stage needs ten years practice off stage.
Well begun is half done.
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。
一般现在时
动词构成:
(1)主动语态:
be(am/is/are)
实义动词(v原形、三单+s/es)
情态动词+v原
(2)被动语态:be(am/is/are) done by
一般现在时
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----am/is/are have----has
一般现在时
句型转化(肯定,否定,一般疑问,特殊疑问)
be动词
肯定陈述:I am a teacher.
否定陈述:
一般疑问:
特殊疑问:
一般现在时
I am not a teacher.
Are you a teacher?
What are you?
句型转化(肯定,否定,一般疑问,特殊疑问)
be动词
肯定陈述:He is from China.
否定陈述:
一般疑问:
特殊疑问:
一般现在时
He is not (isn’ t)from China.
Is he from China?
Where is he from?
句型转化(肯定,否定,一般疑问,特殊疑问)
be动词
肯定陈述:You are a 15-year-old girl.
否定陈述:
一般疑问:
特殊疑问:
一般现在时
You are not(aren’ t)a 15-year-old girl.
Are you a 15-year-old girl ?
How old are you?
句型转化(肯定,否定,一般疑问,特殊疑问)
情态动词+v原
肯定陈述:Kate can swim.
否定陈述:
一般疑问:
特殊疑问:
一般现在时
Kate can not(can’ t) swim.
Can Kate swim?
What can Kate do?
句型转化(肯定,否定,一般疑问,特殊疑问)
实义动词
肯定陈述:We get up at 7:00 every morning.
否定陈述:
一般疑问:
特殊疑问:
一般现在时
We don’ t get up at 7:00 every morning.
Do you get up at 7:00 every morning?
When do you get up every morning?
句型转化(肯定,否定,一般疑问,特殊疑问)
实义动词
肯定陈述:She has a little brother.
否定陈述:
一般疑问:
特殊疑问:
一般现在时
She doesn’ t have a little brother.
Does she have a little brother?
What does she have?
句型转化(肯定,否定,一般疑问,特殊疑问)
be动词、情态动词+v原、实义动词(原形、三单)
肯定陈述:主系表、主谓宾
否定陈述:
一般疑问:
特殊疑问:
一般现在时
be/情态动词+not;don’t/doesn’