SA第1课时（1a-2d）.ppt

文档介绍：Unit 8 It must belong to Carla.
R 九年级上册
Section A (1a- 2d)
Whose bear
is this?
It must be
Linda's because
it's in her bed.
Lead-in
Whose T-shirt
is this?
It must be Tom's
because he was
in it yesterday.
Look at the picture. Write the things you see in the correct columns in the chart.
1a
1. It must belong to Carla. 它一定是属于卡拉的。
belong to意为“属于，为……所拥有”。 belong to没有被动语态，也不能用于进行时态。belong to 后可接名词或代词宾语，不能接物主代词，也不能接名词所有格。
语法重点一
如：The blue sweater belongs to Li Ming. His mother bought it for him yesterday.
The boy belongs to the singing group of Grade One.
This book belongs to me.
That new bike in the corner belongs to Helen.
2. It must be Carla’s. She loves volleyball. 它一定是卡拉的，她喜欢排球。
(1)must为情态动词，无人称和数的变化，后接动词原形。
注意在回答must引起的一般疑问句时，否定式常用needn’t或don’t have to，意为“没必要”，而mustn’t表示“不准；禁止”。
语法重点一
如:---Must I finish the work on time.
---Yes, you must. /No, you needn’t/don’t have to.
（2）此处must表示推断，通常与be连用，意为“一定是，肯定是”。 must这种表示推测的用法只用于肯定句中
如：There must be something wrong with the
computer.
①must表示肯定推测时，其否定形式是can’t，意为“不可能”，表示有把握的否定推测。
如：We must be wrong. （改为否定句）
→ We can’t be wrong.
②might或could表示肯定推测时，意为也许是，可能是，其否定形式是can’t。
如：The red pen can’t be Lucy’s. It might/could be Lily’s.
Listen and match each person with a thing and a reason.
1b