Unit 1 Can you play the guitar?情态动词can用法 课件（共有PPT14张）

(共14张PPT)
人教版-七年级下册-Unit1
Unit 1 Can you play the guitar
情态动词 can 的用法
sing
I like English!
A: Can she sing
B: Yes, she can.
C: No,she can't.
A: Can he speak English
B: Yes, he can.
C: No ,he can't.
课 堂 导 入
Draw
Can he draw
Yes, she can.
No, he can’t.
guitar
Can she play the guitar
Yes, she can.
No, she can’t.
play chess
Can she play chess
Yes, she can.
No, she can’t.
知 识 讲 解
一、情态动词can可以表示能力，意为“能”、“会”。如：
I can play the guitar. 我会弹吉他。
He can swim. 他会游泳。
二、其否定形式为：can not, 可缩写为 can't, 意为“不能”、“不会”。如：
She can not play chess. 她不会下国际象棋。
They can't speak English. 他们不会说英语。
情态动词can表“能力”的用法：
知 识 讲 解
找一找，你发现规律了吗？
1. I can play the guitar.
2. You can sing.
3. He can swim.
4. She can not play chess.
5. They can't speak English.
规律一：情态动词can后面跟行为动词原形。
规律二：情态动词can没有人称和数的变化。
规律三：情态动词can变否定方法：
直接在can后加not，可缩写成can't.
肯定句
can
can not can’t
否定句
知 识 讲 解
情态动词can的一般疑问句及肯定回答
A: Can they play basketball
B: Yes, she can.
A: Can she draw
B: Yes, they can.
知 识 讲 解
情态动词can的一般疑问句及否定回答
A: Can she sing
A: Can he swim
B: No, she can't.
B: No, he can't.
知 识 讲 解
规律总结：
情态动词can的一般疑问句及回答
规律一：含有can的陈述句变一般疑问句，直接将can提前，末尾句号变问号。
规律二：肯定回答：Yes，主语 + can.
否定回答：No, 主语 + can't.
She can draw .
A: Can she draw
B: Yes, she can.
No, she can't.
课 堂 练 习
一、请从下面4个选项中，选出最佳答案。
1.- Tom swim - Yes,he .
A. Can; can't B. Does; can C. Can; can
2.My sister sing, but she can't .
A. can; dancing B. can; dance C. can't; dance
二、请按要求改写句子。
1.She can play chess.(变为否定句)
She play chess.
2.They can swim.(变一般疑问句，并回答。)
they swim Yes, they ./ No, they .
can't
can't
Can
can
课 堂 小 结
“记忆口诀”--- 情态动词can的用法
情动can表能力，行为动词不分离。
不管主语如何变，can的模样永不变。
只要出现情动can，动词原形后面站。
一般疑问can提前，否定can后not添。
Interview your group members about what their parents can or can't do.
Name swim sing dance draw speak English play chess play the guitar
Father
Mother
Homework
Can your father/mother…
homework
Goodbye