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Step 1: Warm up and lead-in
1. Greetings.
2. Let’s chant
Go, went, went to school.
Walk, walked, walked in the park.
Talk, talked, talk to some friends.
Help, helped, I helped Mum.
Watch, watched, I watched TV.
Step 2: Presentation
1. 通过呈现西瓜图片引出watermelon , 通过变换西瓜球的位置引出fall off --fell off。
T: Look! What’s this?
Ss: Watermelon.
T: Where is the watermelon?
S: …
T: Now, where is it? （把西瓜球放在头顶，球不一心掉下来）Oh ,What happeneds?（引出fall off --fell off）
通过师生互相传球的方式操练fall off ----fell off
2.一个学生把球传给老师时，不小心把球砸到老师头上。
T: What happened? Oh, the watermelon bumped my head.
(由此引入新单词happen----happened，bump----bumped新句型What happened ?)
3. Listen and answer the questions:
①Q: What did Sam and Daming do yesterday ?
?? A: They .
②Q: How did they feel then ?
?? A: They were? ?and .
③Q: What did they buy?
?? A: They ______?a watermelon.
④Q: How did Sam take the watermelon ?
? ?A: Sam ______?the watermelon on the .
⑤Q: What happened to Sam ?
?? A: Sam ?his bike.