变否定句
变否定句：can后加not,变成cannot, 缩写为 cann’t
例如： I Can play the piano
I Can not (ng can swim Daming cannot (cann’t) swim
She can speak English very well She cannot (cann’t) speak English
情态动词Can的用法
Can 表示能力：能，能够，会 Can语句的句子组成： 主语+can+动词原形+其他
主语+can+动词原形+其他
我会弹钢琴 I can play the piano
大明会游泳 Daming can swim
Can 没有人称和数的变化，也就是 说，不管主语是第一人称，第二人 称还是第三人称，不管单数还是复 数，他后面都跟动词原形。
very well
They can play football They can not (cann’t) play football
练习
They can’t walking (找错误） _They_ _cann’t_ _walk_
变疑问句
变疑问句：把can 提到主语之前，在 句末加上 问号就可以了！ 例如： I can play the piano（变疑问句）
Can She speak English very well ? 肯定回答 Yes she can 否定回答 No she cann’t
Can they play football ? 肯定回答 Yes they can 否定回答 No they cann’t
练习
1、He can play basketball(改为否定句） He ________ play baskeball
练习
她英语说得很好 She_____ speak English very well A、can B、cans
他们会踢足球 They ______ play football A、can B、cans
练习
Lanlan is a good singer .she can __ very well A、sing B、sings C、sang D、to sing
Can you play the piano?
练习
Daming Can swim Can Daming swim ?
She can speak English very well Can She speak English very well ?
They can play football Can they play football ?
肯定及否定回答
肯定回答 Yes,主语+can 否定回答 No ,主语+cannot (cann’t)
例如： Can you play the piano? 肯定回答 Yes I can 否定回答 No I cann’t
Can Daming swim ? 肯定回答 Yes he can 否定回答 No he cann’t
2、Can you speak English（作肯定回答） __________________
谢谢大家