内容正文:
七年级下册各单元
语法复习
(unit1-unit4)
1
Unit 1 Can you play the guitar?
一、情态动词的基本用法
情态动词是表示说话人的语气、情态等的一类词。如:can(能,会)、may(可以),以后我们还将学到must(必须)、should(应该)、would(应该、想要)等。情态动词在运用时有以下三方面的特征:
1.情态动词无主语人称及单复数的变化。
eg:
They can play the piano.
She can speak a little English.
You may watch TV after supper.
2.情态动词在句中运用时,后接动词原形。
eg:The girl can sing English songs.
I can play Chinese chess.
3.含情态动词的肯定句变为一般疑问句时,将情态动词提至句首,后加“?”;变否定句时,在情态动词后加上“not”即可。
eg:This boy can dance well.
—Can this boy dance well?(一般疑问句)
—Yes,he can./No,he can't.
This boy can't dance well.(否定句)
二、情态动词can的用法小结
can是情态动词,意为“能;会”,表示某人或某物具备的能力,还可用来提出请求,没有人称和数的变化,后面直接接动词原形。下面来看一下它的具体用法。
1.表示有能力做某事,意为“能;会”。
eg:
I can speak English.我会讲英语。
He can play basketball.他会打篮球。
2.表示许可,意为“可以”。
eg:You can sit here.你可以坐在这儿。
下面一起来看一下can的句型变换:
(1)变为否定句
变为否定句时在情态动词can后加not,缩写为can't。eg:
She can't play the piano.她不会弹钢琴。
(2)变为一般疑问句
变为一般疑问句时直接将情态动词can提到句首。
肯定回答为:Yes,主语+can.
否定回答为:No,主语+can't.eg:
—Can you speak Japanese?你会讲日语吗?
—Yes,I can./No,I can't.是的,我会。/不,我不会。
【注意】 用Certainly.作肯定回答,语气更肯定;用Sorry.作否定回答,语气则更委婉、客气。
eg:—Can you sing?你会唱歌吗?
—Certainly,I can.我当然会。
—Sorry,I can't.很抱歉,我不会
(3)变为特殊疑问句
变为特殊疑问句时,其句型通常为“疑问词+can+主语+动词原形+…?”
eg:
What can you do?你会做什么?
Self check
Exercises
一.选词填空。
1. Ms. Wu wants to _______ to his son.
2. Jenny and Mary can _______ English well.
3. Can you _______ your new photo, Grace?
4. Bob _______ “I can play chess well.”
5. Mr. Li often _______ us interesting stories.
talk
speak
show
says
tells
speak, tell, say, talk, show
Self check
Exercises
二、单项选择
1.(柳州中考) — Which coat do you like better, the red one
the blue one? — The blue one.
A. but B. and C. or
2.Li Liang often _____ to his best friend.
A. writes B. write C. writing
3.There is going to be a fashion _____ this Saturday.
A. showing B. show C. shows
C
B
A
Self check
E