1. Enable Ss to make, accept and decline invitations.

2. Enable Ss to talk about obligations, using the Modal Verbs like " can, must/ have to".

Teaching key points:

1. key words: might, prepare, exam, flu, available, until, hang, catch, either

2. key phrases:come to my party, prepare for an exam, go to the doctor, have the flu, go to the movies, too much, another time, go bike riding, hang out

3. key sentences: ① - Can you come to my party on Saturday afternoon?

　　　　　　　- Sure, I'd love to.

　　　　　　　- Sorry, I can't. I have to prepare for an exam.

　　　　　　　- Sorry, I can't, either. I must go to the doctor.

②-Can you go to the movies on Saturday?

　　　　　　　　　- I'm sorry I'm not available. I have too much homework this weekend.

　　　　　　　　　- That's too bad. Maybe another time. Sure, Joe. Thanks for asking

③ but Sam isn't leaving until next Wednesday. Can you hang out with us on Monday night?

Teaching difficult points:

① The use of " either"

② The use of "not...until..."

Teaching aids: CAI, Ss' textbooks and worksheets

Teaching steps:

Step1.Preparation

1. Review of the listening in 1b. Ask questions about Sun Ning's invitation.

e.g. -- Can Jenny come to his party?

　　　　--Yes, she can.

　　　　--Can Ted/Tim/ Kay/Anna/Wilson come to Sun Ning's party on Saturday afternoon? Why?

　　　　--No, they can't....

　　　　　　　　　　 Ted can't come to the party because he has to help his parents.

　　 Tim can't, either. Because he has to prepare for an exam then.

　　 Wilson can't, either. Because he has to go the doctor.

　　 Anna can't, either. Because she might have to meet her friend.

　　 Kay can't, either. Because she has the flu.

2. Encourage the Ss to narrate Sun Ning's party in their own words, using can/ can't and telling the reasons for decling the invitation.

e.g. Sun Ning is going to have a party on Saturday afternoon. He is inviting some of his good friends to his party. But only Jenny can go to his party. Ted can't go to the party because he has to help his parents. Tim can't either. Because he has to prepare for an exam....

Step2. Presentation

Present: ① either----也，用于否定句末。

Eg. You can't go to the party. I can't, either. 我也不能。

② might---may 的过去式。情态动词，表猜测，"也许，或许"might 的可能性更小。

E.g. I can't go to your party because I might have to meet my friend.