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--- I don’t know. Are they on the bed?
--- No, they aren’t.
Step 2: lead-in:
Words and expressions:
know bag
Step 3: Review:
bed sofa chair table bookcase
Step 4: Activity:
let’s play a game
Memory games
Step 5: Key points
【语法讲解】
★in 意为“在……里面,在……内部”。
★on意为“在……的表面上(物体之间有接触)” 。
★under意为“在……的下方(指垂直的下方)” 。
★behind意为“在……的后方” 。
Step6: practice
用in, on, under完成下列句子。
1. The ruler is ____ the schoolbag.
2. The book is ____ the desk.
3. The schoolbag is ______ the desk.
Step 7: 【拓展】
in, on或under后面加名词或代词时,所构成的短语叫介词短语。对介词短语进行提问时,要用where。如:
The tape is in the tape player .
--Where is the tape?
The baseballs are under the bed.
--Where are the baseballs?
on your desk
under the chair
on the sofa