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 happened?（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?