I ______ Peter with his work, but I had a lot of things to do myself.A.must have
题型:不详难度:来源:
I ______ Peter with his work, but I had a lot of things to do myself.A.must have helped | B.should have helped | C.needn’t have helped | D.can’t have helped |
|
答案
B |
解析
试题分析:本题的关键词是but后面的句中使用了一般过去时,说明本句表示的是对过去的虚拟。对过去情况的虚拟使用“情态动词+have done”的形式。Must have done一定做了某事;should have done本应该做某事,实际上却未做;needn’t have done本不需要做,实际上去做了;can’t have done不可能做某事;句义:我本应该帮助Peter做他的工作,但是我有很多自己的事情要做。AD两项并没有比赛虚拟语气,只是对过去情况的推测。C项语义不搭配。根据句义说明B正确。 |
举一反三
(2013·吉林四校高三一诊)I really don"t know how to thank you, but for your help, I ________ my lost necklace.A.couldn"t have found | B.mustn"t have found | C.couldn"t find | D.wouldn"t find |
|
(2013·东北三校4月二次联考)No matter how healthy you ________ be, you need to consult a doctor from time to time.A.should | B.will | C.must | D.may |
|
We ________ jump to conclusions before we have all the facts.A.couldn"t | B.mightn"t | C.shouldn"t | D.mustn"t |
|
You surprise me! You ________ fall asleep in such an important meeting. |
You ________ pay too much attention to your reading skill, as it is so important.A.can"t | B.shouldn"t | C.mustn"t | D.needn"t |
|
最新试题
热门考点