2014年新版 九年级 Unit8.语法精美课件.ppt
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Grammar
Unit 8  It must belong
             to Carla.
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Preview
1. can, may, must,
   could, might, must
2. shall, will
   should, would
3. be able to, have to
4. need, dare
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1. 会运用不同的情态动词表示推测。
2. 会梳理情态动词的用法。
3. 学会整理自己的东西，井井有条。
Aims
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1. --- Whose notebook is this?
--- It must be Ming’s. It has her name on it.
2. --- Whose French book is this?
--- It could be Carol’s. She studies French.
3. --- Whose guitar is this?
--- It might belong to Alice. She plays the guitar.
4. --- Whose T-shirt is this?
--- It can’t be John’s. It is too small for him.

Read carefully
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        表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用can’t。
must
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e.g.
He must know the answer.
他肯定知道答案。
He can’t know the answer.
他肯定不知道答案
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can表示推测“可能性”时，一般用于否定句。
e.g. He can’ t pick her schoolbag up.
      他不可能拿了她的书包。
could 用于表示某事有可能发生或可能是事实。
can / could
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e.g. Don’t eat it. It could go bad.
       不要吃它，它可能坏了。
       The plane could be