7. Excuse me, Marcia, a reporter from Vanity Fair ______ all day. Could you speak to her now?

A. phones                 B. has phoned           C. has been phoning   D. phoned

分析：C。根据句中的时间状语all day和谓语动词phone的特点（为非延续性动词）可知，句子应用进行时态（表示动作不断重复），而选项中只有C为现在完成进行时。句意为：玛西娅，打搅你一下，有名来自《名利场》的记者一整天都在打电话来，你现在能和他说说吗？又如：She is very tired. She’s been typing letters all day. 她很累了。她整天都在打信件。

8. Over the past decades, sea ice ______ in the Arctic as a result of global warming.

A. had decreased       B. decreased             C. has been decreasing  D. is decreasing

分析：C。介词短语“over the past [last]+时间段”的意思是“在过去的……时间中”，它指的是从过去某时持续到现在的一段时间，所以通常与现在完成时或现在完成进行时连用，故答案选C。句意为：过去几十年来，由于全球变暖，北极的海冰正慢慢消融。又如：Technology in this field has matured considerably over the last decade. 这一领域的技术经过过去10年的发展已经相当完善。

9. —Why, Jack, you look so tired!

—Well, I ______ the house and I must finish the work tomorrow.

A. was painting         B. will be painting      C. have painted          D. have been painting

分析：D。现在完成进行时表示从过去一直持续到现在的动作。在此题中，由于“一直在刷油漆”，所以才导致“看上去非常疲惫”，故选D最符合句意。

10. Mother wanted to be a good provider, a role she ______ since her marriage to Father.

A. shoulders              B. shouldered            C. is shouldering        D. has been shouldering

分析：D。根据空格后的since可知，此处谈论的是从过去一直持续到现在的情况，故用现在完成进行时最合适。

11. Joseph ______ to evening classes since last month, but he still can’t say “What’s your name?” in Russian.

A. has been going      B. went                    C. goes                     D. has gone

分析：A。根据句中的since可知，空格处应填完成时态，故可排除B和C；根据句意，空格处填现在完成进行时比填现在完成时更合适，因为它更强调“一直在做某事”。又如：He has been working since noon. 他从中午就开始工作了。He was taken ill and no wonder, considering he has been overworking for years. 他生病了，也难怪，多少年他一直过度辛劳。

上一页  [1] [2] [3] [4] [5] [6] 下一页