—Can we run across the road now?—No, we _ . We have to wait until the light
题型：不详难度：来源：
—Can we run across the road now?
—No, we _ . We have to wait until the light turns green.| A．needn"t | B．mustn"t | C．couldn"t | D．shouldn"t |
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答案
| B |
解析
| needn"t不必； mustn"t 禁止，一定不；couldn"t不能；shouldn"t不应该。句意：我们现在能穿过马路吗？——不，我们一定不要。我们必须等到红灯亮时。情态动词之间最大的区别就是表示语气的不同，结合语境可知选B。 |
举一反三
— Look at the boy playing basketball on the ground. Is it George?
— It ________ be him. He told me he would play basketball after class, but he’s not sure.| A．mustn’t | B．must | C．can’t | D．may |
|
Jim______ sing Chinese songs very well now, but he______do it last year.| A．can; can’t | B．could; can’t | C．can; couldn’t | D．could; couldn’t |
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—Look at the young lady in red. Is it Mrs. King?
—No, It ________ be her. She is wearing a white dress today. |
The man be my English teacher . He has gone to Canada
A. might B. must C. can" t |
Shall I take my swimming suit?
No, you ______. We will just go hiking on the mountain.| A．mustn’t | B．couldn’t | C．needn’t | D．can’t |
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