几道英语时态，语态，虚拟语气，情态动词的高中题

Question

1 Years ago,we did not know this,but recent science ___ that people who don't sleep well soon get ill.
A showed B has showed C will show D is showing
答案是B,为什么不是A？

2. The year 2002 ___ remarkable changes in shanghai's landscape.
A sees B has seen C saw Dhad seen
答案是C,请解释并翻译一下。

3. I would have finished the work more quickly,but I ____ that you were waiting.
A. hadn't known B. wouldn't known C. haven't known D. don't known
答案是A,Why?

4. Because the shop ___ , all the T-shirts are sold at half price.
A . has closed down B. closed down C is closing down D. had closed down
答案是C，为什么呢？

5. The dission _____ alive when an interesting topic was brought in.
A was coming B. had come C has come D. came
答案是D,问什么A 不对。

6.Now that she is out of job,Lucky ___ going back to school,but she hasn't decided yet.
A . had considersd B. has been considering
C.considersd D.is going to considER
答案是B. C 哪错了？

——What are you going to do this afternoon?
——I'm going to the cinema with som friends. The film ___ quite early, so we _____ to the bookstore after that.
A. finished ; are going B. finished; go
C.finishes; are going D. finishes; go
答案是C, 第二空“so we are going to the bookstore” 我觉得应该是"so we are going to go to the bookstore".对不？

7. Under more favorable conditions,we _____ better.
A. could be done B. could have done C. should do D. needn't have done
答案是B, 我选了C。

谁帮我回答一下啊

Answer 1

1 Years ago,we did not know this,but recent science ___ that people who don't sleep well soon get ill.
A showed B has showed C will show D is showing
答案是B,为什么不是A？
看到横线后面的句子吗，是一般现在时。而且主语是recent science 近来的科学。
2. The year 2002 ___ remarkable changes in shanghai's landscape.
A sees B has seen C saw Dhad seen
答案是C,请解释并翻译一下。
主语是The year 2002 所以用过去式。
3. I would have finished the work more quickly,but I ____ that you were waiting.
A. hadn't known B. wouldn't known C. haven't known D. don't known
答案是A,Why?
意思是我本能够更快一些完成工作，但是我不知道你在等我。你在等用的是过去式，我不知道这个动作发生在你在等之前。

4. Because the shop ___ , all the T-shirts are sold at half price.
A . has closed down B. closed down C is closing down D. had closed down
答案是C，为什么呢？
所有的T恤现在被以半价卖掉，所以这个商店快要倒闭了。
5. The dission _____ alive when an interesting topic was brought in.
A was coming B. had come C has come D. came
答案是D,问什么A 不对。
时间状语用的是过去式，所以前后时态一致。
6.Now that she is out of job,Lucky ___ going back to school,but she hasn't decided yet.
A . had considersd B. has been considering
C.considersd D.is going to considER
答案是B. C 哪错了？
最后半句说她还没决定，所以说她一直在考虑。现在完成进行时表示从过去的某一点发生，现在还在进行的动作。
7——What are you going to do this afternoon?
——I'm going to the cinema with som friends. The film ___ quite early, so we _____ to the bookstore after that.
A. finished ; are going B. finished; go
C.finishes; are going D. finishes; go
答案是C, 第二空“so we are going to the bookstore” 我觉得应该是"so we are going to go to the bookstore".对不？
道理上对，但是和前面的重复了，为了避免重复，所以省掉了。依然表示将要去。
8. Under more favorable conditions,we _____ better.
A. could be done B. could have done C. should do D. needn't have done
答案是B, 我选了C。
因为有more，所以用虚拟语气。如果没有more，用C可以。

Answer 2

1.recent 完成时标志
2.就有点像汉语里的拟人 “见证” 某过去一年 过去时
3.过去的过去 过去完成时
4.由后面的are sold 前面的得时态一致 只有C了 现在进行时 其他的时态都后退了
5.come alive 变得活跃 你用进行时怎么翻译
6.还是时态一致 后面是hasn't decided
PS 你能告诉我你为什么那么觉得么 go to go to 不重复么
7.这个是虚拟啊