初中英语时态总结.doc

初中阶段,要求学生掌握动词6种时态的基本结构(一般现在时,一般过去时,现在进行时,过去进行时,现在完成时,和一般将来时态)及它们的主要用法和区别。了解过去将来、过去完成时态的基本用法,解题时注意找出关键词,正确判断出时态,按时态结构正确变化动词。注意句子时态的一致性,注意对特殊时态的处理。
1、一般现在时:
用法:
1)现阶段经常性,习惯性的动作。例如:
I get up at six every morning.
He plays tennis once a week.
2)现在的状态。例如:
My mother is a teacher. She teaches English in a school.
3)客观真理。例如:
The earth goes around the sun.
4)常用于一般现在时态的时间状语:
often ,usually ,sometimes ,always ,every day ,never ,in the morning 等连用时。
构成:主语是I, we, you, they和名词复数时作谓语的行为动词用原形。主语是he, she , it和名词单数时,动词第三人称单数的变法如下:
一般情况
+s
以s, x, ch, sh,o结尾
+es
以辅音+y结尾
变y为i+es
主语为第三人称和名词单数时:
肯定式:S+V/动词的第三人称单数
否定式:S+ don't/doesn't +V+其他
疑问式:Do/Does+S+V+其他
简略回答:(肯)Yes,S+do/does
(否)No,S+do/does not
注意:have的第三人称单数为has
主语
肯定式
否定式
疑问式
第一、二人称和第三人称复数以及名词复数
I am a student.
We/You/ They are students.
He/ She is a student.
I / We/ You/ They/ like music.
I am not a student.
We/You/ They are not students.
He/ She is not a student.
I / We/ You/ They/ don’t like music.
Many people don’t like music.
Are you a student.
Are you/ they students?
Is he/ she a student?
Do you/ they like music?
Do many people like music?
Many people like music.
当主语是第一、二人称和第三人称复数以及名词复数时:
肯定式: S + be +···
否定式: S+ be +not + ···
疑问式: Am /Is /Are + S+ ···?
简略回答: (肯) Yes,S + be.
(否) No,S + be.
练习题:
--- May I help you, sir?
--- Yes, I bought the TV the day before yesterday, but it