since主句中带的动词时延续性还是瞬间性my friend died since last week it's two weeks since my father died 这个为什么是对的?所以根据问题主句的动词要延续性还是瞬间性.
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since主句中带的动词时延续性还是瞬间性my friend died since last week it's two weeks since my father died 这个为什么是对的?所以根据问题主句的动词要延续性还是瞬间性.
since主句中带的动词时延续性还是瞬间性
my friend died since last week
it's two weeks since my father died 这个为什么是对的?
所以根据问题主句的动词要延续性还是瞬间性.
since主句中带的动词时延续性还是瞬间性my friend died since last week it's two weeks since my father died 这个为什么是对的?所以根据问题主句的动词要延续性还是瞬间性.
这里since是自从…以来的意思
接一段时间 + ago：如 They have lived in that house since two years ago.要求：谓v.用现在完成时,而且须是延续性动词.
接时间状语从句：如 I have loved her since I met her last time./ Lily has stayed at home since she left school.要求：主句的谓v.用现在完成时,而且须是延续性动词；从句的谓v.用一般过去时,而且须是终止性动词
since 自某一刻起，至今 .......
my friend died last week. 上星期死了.不能用since。可以说
A week has passed since my friend died. 从我朋友去世，一周过去了。
since my father died ？ 自从父亲死（那一刻）算起
my friend died since last week(错误)
My friend has been dead since last week.（正确）
由since+过去时间点，作时间状语的句子的时候主句应该用现在完成时。
It's +一段时间+since+过去时间点，是一个固定搭配，表示“自从……到现在有……时间了。”
如果有疑问，欢迎追问，
如果...
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my friend died since last week(错误)
My friend has been dead since last week.（正确）
由since+过去时间点，作时间状语的句子的时候主句应该用现在完成时。
It's +一段时间+since+过去时间点，是一个固定搭配，表示“自从……到现在有……时间了。”
如果有疑问，欢迎追问，
如果有帮助，请记得及时采纳哦，亲……。
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