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现在完成时 |
现在完成时: 1.构成:have / has + 过去分词 2.功能:
(1)表示过去所发生的动作对现在的影响或产生的结果。常与yet, just, before, recently, lately(最近), ever, never等表时间的副词搭配使用。
(2)表示一个从过去某个时间开始,延续到现在并可能持续下去的动作,常与表示一段时间的时间状语连用。如:so far(迄今为止), up till now(直到现在), since, for a long time(很长时间), up to present(直到现在), in the past / in the last few years(在过去的几年里), these days(目前)……
(3)某些非延续性动词(即:动作开始便终止的动词),在现在完成时中不能与表示一段时间状语搭配。
►. She has gone away for a month.(误)
►. The man has died for two years.(误)
►. How long have youbought the book?(误)
(4)注意 since的用法:
几组对比:
►. He has gone to Shanghai. 他到上海去了。
►. She has gone. 她已走了。
►. The door has been closed. 门关上了。(动作)
测试精编
1. The prices ________ going up all the time in the past few years.
2. For the whole period of two months, there ________ no rain in this area.
3. Today is Jane's wedding day. She ________ John.
4. No wonder the flower have withered, they ________ any water for ages.
5. Nowadays computer ________ a wide application with the development of production and science.
KEYS 1. C 2. C 3. C 4. C 5. B
KEYS 1. C 2. C 3. C 4. C 5. B |
文章来源:http://www.only4english.com/te_news_knowledge_copy_copy/2019-09-07/3388.chtml |