Question

求高手解答、、

1.When will you finish _____ the book?（我选c）
A.in writing B.to write C.having written D.writing（正确）

2.____ from high-school , he entered a college.（我选d）
A.Having graduated（正确） B.Being graduated C.Graduated D.Graduating

3.His proposal is that the machine ___ at once.（我选b）
A.is stopped B.would be stopped C.be stopped（正确） D.is being stopped

4.If I _____ foreign languages last year I ____ it.（我选b）
A.have been fond of , would take
B.was fond of , would have taken
C.were fond of , would have taken
D.had been fond of , would have taken（正确）

5.If it ___ so late , we could have coffee.（我选a）
A.wasn't B.isn't C.weren't（正确） D.not be

6.I wish I ____ with them at that time.（我选c）
A.were B.had been（正确） C.would be D.were to be

7.One should take care of ____.（我选a）
A.its health B.her health C.their health D.his health（正确）

8.Your parents ____ twenty minutes ago.（我选d）
A.should come B.should have come（正确）
C.should be come D.should have came

9.If it ____rain tomorrow , we shall have a picnic.（我选d）
A.would not B.does not（正确） C.did not D.will not

Answer 1

1.finish本身就是完成的意思，不用在后边加having done, 一般用法就是finish doing. having done做状语比较常见，如题2.

2.having done作状语强调事件发生的前后顺序，即having done动作发生在谓语动词的动作之前。题目中他是先从高中毕业再进大学，强调先后顺序。如：Having answered the teacher's question, he sat down.

3. 题中that引导表语从句，由于主语是proposal,所以从句中用should+动词原形的虚拟语气，should可以省略，题中就省略了。类似用法还有demand, suggestion(建议)，requirement，insist(坚持要求)等词，当后边跟表语从句或者同位语从句时，从句中谓语动词用should+虚拟语气。这些词的动词形式后跟宾语从句时也是同样的用法。

4.5.都是if虚拟条件句，构成如下：和将来事实不符，if从句中用were to do/过去时/should+动词原形，主句中用would+动词原形；和现在事实不符，从句用were/过去时，主句用would+动词原形；和过去事实不符，从句用过去完成时，主句用would have done.
主句中除了would,还可以用could，might,should。

6.这里wish后用虚拟语气，我当时没跟他们在一起，所以和过去事实不符，用过去完成时。比较：I wish I were a bird.（和现在事实不符）

7. one这种用法是泛指，意为anyone，任何人.

8.题目中出现了具体的时间状语：twenty minutes ago.所以选择B,should have done表示过去本应该做某事，但事实上没做。have作为完成式的构成部分，后边不可能出现动词过去式，只能是动词的过去分词形式。come-came-come.

9.if,when等引导的从句中，现在时态表将来。如果从句中用了will,那不表将来时态，表示意愿，如：If you will go with me, I will go there. 如果你愿意和我一起去我就去。

Answer 2

以上~