题目内容
13.Mum,I ______ my homework since 8o'clock.May I play with my cell phone for a while?( )A. | have done | B. | had done | C. | have been doing | D. | was doing |
分析 妈妈,我自从8点钟一直在做家庭作业.我能玩会儿手机吗?
解答 答案的C.本题考查完成进行时;现在完成进行时表示在与现在相联系的段时间内一直在进行没有间断的动作,并且暗示动作还在进行中;由题干中的since 8o'clock"判断说话人做作业的动作一直在进行,没有间断,故选C.
点评 对时态的选择,要在把握时态的基本用法的基础上,根据具体语境和题干中的时间推断时态,同时关注特殊的结构.

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