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来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/09/24 06:26:37
for的时间状语 如何改为since的时间状语（ ）
解题思路： \"for+时间段”;“since+时间点”。
解题过程：
在完成时中，for接时间段，since表示时间点，后接具体时间。例如：
I have lived here for more than twenty years.=I have lived here since 1991 .
I have lived here since I was born.=I have lived here for ten years .
My aunt has worked in a clinic since 1949. =My aunt has worked in a clinic fifty years ago .
My brother has been in the Youth League for two years. =My brother has been in the Youth Leaguesince two years ago .
I have not heard from my uncle for a long time.=I have not heard from my uncle since a long time ago.
最终答案：略
解题过程：
在完成时中，for接时间段，since表示时间点，后接具体时间。例如：
I have lived here for more than twenty years.=I have lived here since 1991 .
I have lived here since I was born.=I have lived here for ten years .
My aunt has worked in a clinic since 1949. =My aunt has worked in a clinic fifty years ago .
My brother has been in the Youth League for two years. =My brother has been in the Youth Leaguesince two years ago .
I have not heard from my uncle for a long time.=I have not heard from my uncle since a long time ago.
最终答案：略