内容正文:
Explanation
1. can 的用法
(1)表邀请。
若接受邀请,回答为:
OK./All right./Sure./ Of course./Certainly./
Yes(Sure),I’d love(like) to.
若不接受邀请,回答为:
Sorry,Ican’t.(+原因)
eg . Can you come to the party?
Yes/Sure,I’d love/like to.
Sorry,Ican’t. I have to help my parents.
其他表邀请的句型:
1) Could /Will/Would you come to the party?
2) Would you like /love to come to the party?
3) I hope you come to the party.
4) Please come to the party.
5) How/What about coming to the party?
(2)表能力“能,会”否定句 can’t不能
eg. He can swim,but I can’t.
How long can you stay under water?
(3)在否定句,疑问句中表示“不可能”或“一定不”
eg. Can he come ?No,he can’t come.(他会来吗?不,他不能来.)
2.情态动词“have to”与其他的情态动词如:“can” , “may” “must”和 “should” 不同。
(1)这4个情态动词没有人称和数的变化,而have to有。它的第三人称单数为“has to” ,过去时为had to, 如:
2 .have to强调客观上需要做某事,即表示外界 条件的需要不得不做某事,含有“客观所迫”的意味,它有人称和数的变化,可用于多种时态中,否定式为“不必”。
must强调说话者主观上认为必须做某事,含有“主观判断”的意味,它的否定式意为“禁止,不允许”。
eg. If one gets ill,he’ll have to see a doctor.
She has to go to school by bus.
We must go to school on time.
---Must I finish the homework now ?
---Yes, you must./No,you needn’t(don’t have to).
You mustn’t play football in the classroom.
填空
1. --_______ you come to my party?
--_______, I’d love to.
2. --_______ you go to the movies?
--I’m sorry, I _______.
3. -- _______ you go to the basketball game?
--No, I ______. I’m playing soccer.
4. --______ you go to the concert?
--Great! I’d ______ _____.
5. -- _______ you go to the mall this week?
--Sorry, I _______.
Can
Yes
Can
can’t
Can
can’t
Can
love to
Can
can’t
单项选择
1. I have _____ homework to do.
A. too many B. too much C. much too D. a few
2. He ___ stay at home, because his mother
was ill.
A. has to B. have to C