内容正文:
教学课件
沪外教英语七年级上册
Unit6语法专项—— 情态动词 can/should/must & 感叹句
全解精讲+分层练习
1
学习目标
掌握 can:能力、许可、可能性
掌握 should:建议、责任
掌握 must:规定、必须、禁止
掌握 What/How 感叹句结构
情态动词概述
情态动词:表语气,后接动词原形
无人称、数的变化
否定:直接加 not
疑问:提前情态动词
核心:can / should / must
情态动词 can
含义:能、会、可以、可能
表能力:I can swim.
表许可:Can I use your pen?
表可能性:It can rain.
否定:can't(不能/不可以)
情态动词 should
含义:应该(建议、责任)
表建议:You should exercise.
表责任:We should help others.
语气温和,不强硬
否定:shouldn't(不应该)
情态动词 must
含义:必须、一定、不准
表规定:You must obey rules.
表必要:I must finish work.
语气最强,表强制
否定:mustn't(禁止、不准)
情态动词对比
can:能力、许可、可能
should:建议、责任
must:规定、必须、禁止
口诀:能can,该should,必须must
情态动词句式
肯定:情态动词 + 动词原形
否定:情态动词 + not + 原形
疑问:情态动词 + 主语 + 原形?
例:Must I go? / You can't run.
感叹句 What(单数)
结构:What a/an + 形 + 单名!
What a clever boy!
What an exciting game!
a辅音开头,an元音开头
感叹句 What(复数/不可数)
结构:What + 形 + 复名/不可数!
What beautiful flowers!
What good news!
无a/an
感叹句 How
结构:How + 形/副!
How happy she is!
How fast he runs!
修饰形容词或副词
What vs How 区别
What:修饰名词
How:修饰形容词/副词
口诀:What名How形副
练习1 — 情态动词填空
1.I ___________ swim very well.(can/should/must)
2.You ___________ listen carefully.(can/should/must)
3.We ___________ fight.(mustn't/shouldn't/can't)
4.She ___________ speak English.(can/should/must)
5.You ___________ be late.(mustn't/shouldn't/can't)
can
should
mustn't
can
mustn't
练习2 — 情态动词填空
1.We ___________ protect animals.(can/should/must)
2.___________ I use your ruler?(Can/Should/Must)
3.He ___________ study hard.(can/should/must)
4.They ___________ smoke here.(mustn't/shouldn't/can't)
5.It ___________ be cold.(can/should/must)
should
Can
must
mustn't
can
单选
1.—______ I help you? —Yes, please.
A. Can B. Should C. Must
2.You ______ cross the road now. It's dangerous.
A. can't B. shouldn't C. mustn't
3. We ______ keep our classroom clean.
A. can B. should C. must
4. He ______ finish homework today.
A. can B. should C. must
A
C
B
C
感叹句填空
1.____________ lovely cat!(What/How)
2.____________ fast she runs!(What/How)
3.____________ beautiful day!(What a/How)
4.____________ happy children!(What/How)
What a
How
What a
What
感叹句转换
1.It is a tall tree. → __________ tall tree!
2.She is kind. → __________ kind she is!
3.They are cute dogs. → __________ cute dogs!
What a
How
What
句型转换
1.You must listen to the teacher.(一般疑问)
2.She can sing well.(否定句)
3.What a great day!(同义句 How...)
Must you listen to the teacher?
She can't sing well.
How great the day is!
改错
1.He can sings English songs.
2.You should not to run.
3.How a beautiful flower!
4.What clever the boy is!
sings→sing
去掉to
How→What a
What→How
易错点1 — 情态动词
后必须加动词原形
无三单:he can(非cans)
mustn't:禁止;can't:不能
感叹句
What + 名词;How + 形容词/副词
单数可数:What a/an
复数/不可数:无a/an
情态动词辨析
can:能力许可;should:建议;must:规定
mustn't:绝对禁止
shouldn't:不建议
知识梳理(一)
can:能、会、可以、可能
should:应该(建议)
must:必须、禁止
感叹句:What(名)、How(形/副)
知识梳理(二)
情态动词+原形,无人称变化
感叹句:What a/an+单名;How+形/副
重点:can/should/must 语气区别
教学课件
Unit6语法专项—— 情态动词 can/should/must & 感叹句
Thank you for listening!
25
$