题目内容
12.-I wonder if you could go with me to the supermarket.-Don't disturb me.I my experiment report all the morning and haven't finished yet.( )
A. | write | B. | was writing | ||
C. | have written | D. | have been writing |
分析 --我想知道你是否可以陪我去超市.
--不要打扰我.我整个上午一直在写实验报告,到现在还没写完.
解答 答案:D.
根据答语可知,"我"整个上午一直在写实验报告,现在还没写好,动作发生在过去并且有可能继续下去,应该用现在完成进行时,根据后面的haven't finished yet可知排除C项,现在完成时表示已经完成的动作;故选D.
点评 注意现在完成时和现在完成进行时的区别:
1.相同点:
当表示过去发生且一直持续到现在的动作时,两者通用;现在完成进行时只是现在完成时的一种强调时态而已.
如 I have played for half an hour since I began to play tennis.=I have been playing for half an hour since I began to play tennis.
2.不同点:
(1)当表示过去发生的动作,已经完成,强调对现在产生的结果或影响时,只能用现在完成时.
如 I have copied these problems.
(2)当使用现在完成进行时的时候,主句的谓语动词要用延续性动词;而当使用现在完成时的时候,是否使用延续性动词,视具体情况而定.
(3)不能用于进行时的动词(如like,want等),也不能用于现在完成进行时.而现在完成时无此限制.
如 I have been liking her for a long time.×I have liked her for a long time.
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