【经典考例】—Frank will have his birthday party tomorrow.
—It be! He had it yesterday.
A.can’t
B.must
C.may
D.needn’t

A
解析：考查情态动词辨析。根据答句“He had it yesterday.”可知，弗兰克昨天已经举办过生日聚会，所以明天不可能再举办，表否定推测用can't。A项“can't”意为“不可能”，符合题意；B项“must”表肯定推测“一定”；C项“may”表“可能”；D项“needn't”意为“不必”。故选A。

—I ______ go to the movies, but I’m not sure.
A.must
B.need
C.might
D.could

C
解析：考查情态动词的用法。由答句“but I’m not sure”可知，此处表示不太肯定的推测。must表肯定推测；need意为“需要”；might表不太肯定的推测；could为can的过去时。故选C。

【经典考例】All passengers go through safety check before they take a plane.
A.can
B.may
C.must
D.ought

【解析】：本题考查的是情态动词的用法。根据句意“所有的乘客在乘坐飞机前必须通过安全检查”，这里需要一个表示“必须、一定”的情态动词。A选项“can”表示“能够”，B选项“may”表示“可能”，D选项“ought”表示“应该”，但通常与“to”连用构成“ought to do sth.”的结构。而C选项“must”正好表示“必须”，符合句意。
【答案】：C

Ⅰ. 选择恰当的单词,完成句子。
1. I’m too ______(sleep/sleepy) to watch the end of the show.
2. I think we must get on well with our ______(neighbor/neighborhood).
3. I heard a strange ______(noise/noisy) outside our window last night.
4. We’d like to have a picnic this Saturday. Does ______(nobody/anybody) else want to go with us?
5. That toy truck ______(must/can) belong to Jane’s little brother. He was the only little kid at the picnic.

1. sleepy
2. neighbors
3. noise
4. anybody
5. must

() 1.I wonder ______ you can help me with my English.
A.what
B.if
C.that
D.which

B

() 2.Oh, you are all wet. It ______ heavily outside.
A.must raining
B.must be raining
C.might raining
D.can’t be raining

B