第一节：单项填空(共15小题；每小题1分，满分15分)

从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

21.-May I take your order now?

-______

-OK, I'll come back in a few minutes.

A. No, we need more time.　 B. Could you bring us the bill?

C. Yes, here it is. Thank you. D. Sure, we'd love to.

2．Mr．Green mustn'thave received my letter，otherwise he would have replied before now．格林先生一定没有收到我的信，要不然他在这之前早就回信了。

(选自《初、高中英语考点难点详解词典》，黑龙江人民出版社即将出版)

1．His absence mustn't have been noticed．(CGEL)他的缺席一定没有人注意到。

3．-______I use your pen？I've lost mine．

-Of course．Here you are．

A．Need B．May C．Must D．Should(北京会考，96－27)

mustn't have done ／couldn't have done

[问](1)I didn't see her in the meeting-room this morning．She ______at the meeting．

A．mustn't have spoken

B．shouldn't have spoken

C．needn't have spoken

D．couldn't have spoken(上海高考，91)

标准答案为D。难道不能选A吗？

(2)-There were already five people in the car but they managed to take me as well．

-It ______a comfortable journey．

A．can't be B．shouldn't be C．mustn't have been D．couldn't have been

(全国高考95－15)

标准答案为D。难道不能选C吗？

(3)Jack ______yet，otherwise he would have tele- phoned me．

A．mustn't have arrived

B．shouldn't have arrived

C．can't have arrived

D．need not have arrived

上海高考，97－19)

答案为C，能否选A呢？

(4)My sister met him at the Grand Theatre yesterday afternoon，so he ______your lecture．

A．couldn't have attended

B．needn't have attended

C．mustn't have attended

D．shouldn't have attended(同上，2000－23)

答案为A，能否选C呢？

[答]上面的试题已不符合现代英语，尤其是美国英语的实际使用情况，应当改进。有充分的资料证明mustn't have done也可以用来表示"推测过去不可能发生某事"。例如：

2．-Excuse me，______I ask you a question？

-Yes，please．

A．must B．need C．may D．would(北京会考，94－24)

1．-Anne，______I have some more cake？

-Certainly，help yourself．

A．need B．must C．will D．may (北京会考，95－19)

4．"May I leave this with you？""Yes， you may．""我可以把这个东西留在你这里吗？""是的，你可以(留下)。"

但是，应注意，在这种情况下，也可以使用you could。例如：

A：Could I see you tomorrow，then？B：Yes，(I think)you could．(EGS)这就是说，上题的选项B(could)也同样是正确的。

[附注]按PEU的说法，此处不能用 could。(p．131)

请做下面的英语试题：

3．A：May I go with you？

B：You may．／You may not．(EGS)

A：我可以跟你去吗？

B：你可以去。／你不可以去。

2．-Could I borrow your dictionary？

-Yes，of course you ______．

A．might B．will C．can D．should

(全国高考，92－12)

1．"Could I use your phone？"

-"Yes，of course you can．"(PEU)"我可以用一下你的电话吗？""当然可以。"