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Step 1: Show students the learning objectives
Step 2:Lead in
1.Show students my hobbies
2.Guess what were I doing at 9 last night?
3.Think and say(What were you doing at 9 last night?)
Step 3: Presentation
1. Look and say
2. Work out the rule
3.Ask and answer in pairs
4. Have a try
Step4:Practice（P97）
Step5. Presentation
1.Present three sentences,students translate them into Chinese,pay attention to the blue words when,while and as
2.Explain the usages of when,while and as with the help of some pictures
3.work out the rules
Step6. Practice（P98）
Step7: Do some exercises
一．中考链接
1.---What were you doing this time yesterday?
--- I _____ on the grass and drawing a picture.
A. sit B. sat C. am sitting D. was sitting
2. When I came back yesterday evening, my brother _____ his homework.
A. is doing B. has done C. was doing
3. --- I called you at 4:00 yesterday afternoon, but no one answered.
--- Sorry, I _____ with my friends at that time.
A. swim B. swam C. will swim D. was swimming
二．用所给动词的适当形式填空
It was ten o’clock on Sunday morning. The family were all in the garden. Mr
King and Mrs King ___________(sit) under the tree, and they__________
(talk) and________(laugh). Their son Jack ___________(read) an interesting