内容正文:
Unit 9 Can you come to my party?
Section A Grammar Focus-3c
情景导入
Review:
I’d love to come, but I’m afraid I can’t. I have an exam on Monday so I must prepare for it.
Hey, Anna, can you come to my birthday party on Saturday?
Sure. I’d love to.
Can you play chess with me tomorrow afternoon?
I’m afraid not. I have the flu.
Can Tim take a walk with us?
No, he can’t. he must do his homework first.
v. 邀请
invite
accept
refuse
v. 接受
v. 拒绝
单词展示
Grammar Focus
生成新知
Can you come to my party on Saturday?
Can you go to the movies tomorrow night?
Sure, I’d love to.
Sorry, I must study for a math test.
Sure. That sounds great.
I’m afraid not. I have the flu.
Can he go to the party?
Can she go to the baseball game?
Can they go to the movies?
No, he can’t. He has to help his parents.
No. she’s not available. She must go to the doctor.
No, they’re not free. They might have to meet their friends.
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情态动词主要有:may / might, can / could, shall / should, have to, must, will / would, ought to, need, dare, used to.
(1) 不能独立作谓语,只能和动词原形一起构成谓语,表示说话人的
语气和情态。
(2) 没有人称和数的变化 。(have to 除外)
(3) 否定形式:在其之后加not 。(have to 除外)
疑问形式:情态动词提到主语之前。 (have to 除外)
1. 情态动词
问题探究
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2. 情态动词Can的常见用法:
(1) 表示能力:情态动词can一般指体力、知识、技能等方面的能力,即“能够;会”。如:
My brother can swim but I can’t. 哥哥会游泳,但是我不会。
(2) 表示许可:多用在口语中,表示请求或允许,意为“可以;能够”等。用于疑问句中用来提出要求,用于否定句中表示不允许。如:
Can I use your pen? 我可以用你的钢笔吗?
(3) 表示推测:情态动词can表示推测时,常用于否定句或疑问句,意为“(不)可能”。用于肯定句中表示理论上的可能性,意为“有时会”。如:
It can be very cold here in spring. 这里的春天有时可能会非常冷。
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2. 情态动词Can的常见用法:
(4) 表示邀请:情态动词can除了表示能力、许可或猜测之外,还可以表示邀请;could较can更礼貌、委婉。表示邀请时的用法如下:
① 当用情态动词can发出邀请时,用一般疑问句 Can+主语+动词原形+其他?如:
Can you come to my party? 你能来参加我的聚会吗?
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2. 情态动词Can的常见用法:
② 当用情态动词can发出邀请时,其回答分为两类。一类表示接受邀请,另一类表示拒绝邀请。如:
Sure, I’d love to. 当然,我很乐意。
Sure, I think he she will. 当然,我想她会的。
Sorry. I’m not available. 对不起,我没有空。
I’d love to, but I’m afraid I can’t. 我很乐意去,但是恐怕我不能去。
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2. 情态动词Can的常见用法:
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3. can 与 may
(1) 都可表示“许可” 。may用于较正式、客气的场合,而can比较随便(口语)。如:
You may / can sit here.
The policeman sa