英语单选,情态动词!1 I asked her if I ______close the window .A shall

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英语单选,情态动词!
1 I asked her if I ______close the window .
A shall B will C would D should
为什么?
2 who ordered that all of us ______start at two tomorrow morning
A would B must C could D x
为什么B不行?
3 man ______________a battle against pollution at once .
A must start fighting B had to start to fight
C is starting fighting D is beginning fighting
为什么B不行?
4 he was taken away be the police .he ______for a thief.
A must have mistaken B must have been mistaken
C must be mistaken D must mistake
,为什么?
5 –do you still remember when we went to the great wall?
--I can’t remember it well ,but ______ something last autumn
A might it be B must it have been C could it have been D could it be
,为什么?

1.现实语法习惯,在因为宾语从句要用过去将来是,助动词由一般将来时的第一人称助动词"shall"变成"should".
2.固定用法省略shoule
3.A表示主观意愿,B表示客观迫使,所以用A.
4.被动语态
5.表示对过去肯定的推测,但只有肯定句才能用"must",这里是疑问句,所以用"could".
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I asked Miss Jones if I ________ close the window. Shall I close the window? shall i open the window Shall I close the window 几个英语单选1.--Do you mind if I open the window?--＿＿,but I've cau 英语情态动词单选,1.I thought you _____like something to read,so I ha 英语情态动词 You____ do i if you really don't want to .A.mustn't A:Shall I ____ the window?B:____ ____ the window,piease. Shall I leave the window open?) Shall I leave the window open? Shall I open the window?翻译下作为情态动词有过去式吗?如I asked if i might borrow his car,这里不能用may,migh