题目内容
9.-Isn't it time you went to bed,Mike?-I ________ painting all afternoon,so I have to finish my homework now.( )
A. | was practicing | B. | have practiced | ||
C. | have been practicing | D. | had practiced |
分析 --Mike,难道还不到去睡觉的时间吗?
--我整个下午都在练习绘画,所以现在我必须去写作业了.
解答 答案:C.根据all afternoon可知练习绘画持续了整个下午,而so I have to finish my homework now表明我现在要去做作业,强调一直在练习绘画,所以用C现在完成进行时.
点评 考查现在完成时.现在完成进行时与现在完成时的比较:
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v.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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