说明理由 1.We wish the job _____ more quickly,but we had some difficulty in getting the right kind of supplies.A.be done B.could have been done C.could be done D.may have been done2.He wouldn't have tripped over the step if he ______ where he ___

说明理由 1.We wish the job _____ more quickly,but we had some difficulty in getting the right kind of supplies.A.be done B.could have been done C.could be done D.may have been done2.He wouldn't have tripped over the step if he ______ where he ___
说明理由
1.We wish the job _____ more quickly,but we had some difficulty in getting the right kind of supplies.
A.be done B.could have been done C.could be done D.may have been done
2.He wouldn't have tripped over the step if he ______ where he ______ then.
A.looked,were going B.had looked,had gone C.were looking,had been going D.had been looking,was going
3.______,we should have gone on a trip to the mountain.
A.But for the fact that the weather was bad
B.If the weather were not bad
C.Because of the bad weather
D.Whether the weather being bad or not

说明理由 1.We wish the job _____ more quickly,but we had some difficulty in getting the right kind of supplies.A.be done B.could have been done C.could be done D.may have been done2.He wouldn't have tripped over the step if he ______ where he ___
1.B wish 后要加虚拟语气i的.从本题的后半部分我们知道前面是与过去事实相反的虚拟语气,后面是记述过去的真实句,所以排除a,c,; d项只表示对过去的不确定的推测,b选项略有责怪的意味,符合题意.
2.D 考的是典型的与过去事实相反的句型,if ..had done, would have done; 只是指如果当时在看路的话, 所以用过去完成进行时.
3.A 本句叫含蓄条件句,即but for the fact that the weather was bad 相当于一个条件句- If it had not been for the fact that the weather was bad..第二句是与现在或将来事实相反的句型,c,d 句不合题意.

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1. C
job要被完成要用被动语态, 后面有说had,也就是说明已经是过去式了, 所以排除A和D, 由于B的could和been同时存在是不符合常理的所以选择C

2.B
题目是说如果他看清了就不会被绊倒了。前面是wouldn't, have tripped说明要用完成时。 如果他之前已经看过了路-----had looked. 前半句已经说明他已经被绊倒了, ...

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1. C
job要被完成要用被动语态, 后面有说had,也就是说明已经是过去式了, 所以排除A和D, 由于B的could和been同时存在是不符合常理的所以选择C

2.B
题目是说如果他看清了就不会被绊倒了。前面是wouldn't, have tripped说明要用完成时。 如果他之前已经看过了路-----had looked. 前半句已经说明他已经被绊倒了, 所以后面用had gone. 所以选择B

3.B
按照情理, 题目是说如果天气不坏的话我们早就在去山上的路上了。所以A,C是不符合情理的排除。由于后面的have gone可以推断出是过去式所以D被排除了，因为D说的是一般现在时. 所以选B

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1.C. 跟现在的事实相反，表意愿，用could不用can
　　2.A。 He wouldn't have tripped over the step，可见是与过去事实相反，所以是过去完成时，当然虚拟语气中be动词只有were。
3.A but for 要不是。。。典型虚拟语气。