完成时加since的用法
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完成时加since的用法
have 加延续动词pp 加since短语为从since开始动作的延续,而当动词为瞬间动词是则表示从since开始动作对现在的影响 这样说对么?
I have lost my book since 1 year ago.
I have been lost my book since 1 year ago.
have +延续动词pp 后在加for一段时间 和 since加点时间是一样的么 如
I have been lost my book since 1 year ago./ for 1 year
但貌似瞬间动词的完成时不能和段时间连用的啊
have 加延续动词pp 加since短语为从since开始动作的延续,而当动词为瞬间动词是则表示从since开始动作对现在的影响 这样说对么?
I have lost my book since 1 year ago.
I have been lost my book since 1 year ago.
have +延续动词pp 后在加for一段时间 和 since加点时间是一样的么 如
I have been lost my book since 1 year ago./ for 1 year
但貌似瞬间动词的完成时不能和段时间连用的啊
have 加延续动词pp 加since短语为从since开始动作的延续,而当动词为瞬间动词是则表示从since开始动作对现在的影响这种说法不对.现在完成时通常有两层含义:1.表示过去已发生但对现在情况有影响,常与already,never,up to now,in the last.years,yet(用于否定句),just before等词作状语时连用.
eg He has gone to Beijing.他已经到北京去了.(表示他现在不在这里.)
Someone has turned off the light.(说明现在灯不是开着的.)
有人把灯关了.
2表示过去开始,持续到现在的动作或状态.常与since,for等连用.
eg We have not seen each other for ten years.我们十年没见面了.(没见面的动作从十年前持续到现在.)
它常和“for+一段时间”或“since+某个时间点”连用.
持续性动词可用表示一段时间的状语修饰,而瞬间动词则不可.lose是瞬间动词,不能与表示一段时间的状语连用,如for.可以说‘I have lost my book since one year ago.\My book has been lost for one year.
eg He has gone to Beijing.他已经到北京去了.(表示他现在不在这里.)
Someone has turned off the light.(说明现在灯不是开着的.)
有人把灯关了.
2表示过去开始,持续到现在的动作或状态.常与since,for等连用.
eg We have not seen each other for ten years.我们十年没见面了.(没见面的动作从十年前持续到现在.)
它常和“for+一段时间”或“since+某个时间点”连用.
持续性动词可用表示一段时间的状语修饰,而瞬间动词则不可.lose是瞬间动词,不能与表示一段时间的状语连用,如for.可以说‘I have lost my book since one year ago.\My book has been lost for one year.