查苹果序列号:since \\in \\during在表示时间时的区别？

来源：百度文库编辑：查人人中国名人网时间：2024/04/26 12:16:13

since \in \during在表示时间时的区别？
是加时间段还是时间点？
时态是怎么区别的？

since后接时间点或动作，常用于现在完成时，in,during后接时间段，in+时间段常用于一般将来时，during"在......期间",时态不定。

since:加时间点,一般用现在完成时,since two years ago
in:时间段,一般将来时,I will go in two years
during:加时间段,时态不定,看语镜,during two years
PS:since/for可以互换:
I have been here since two years ago===
I have been here for two years

since 表示从一个时间开始一直到现在
in 表示在一个大的具体时间
during 表示在一个时间段中

since用在现在完成时
in表示在一段时间内
during加时间段

since \\in \\during在表示时间时的区别？ in the days since It seems ages since we heard from you-and even longer since you went to work in China. 中文翻译 It seems ages since we heard from you-and even longer since you went to work in China. 中文翻译改写句子：It has been in use since 1998. (用in 1998改写句子） It was a long time__that he graduate from the university.A since Bago C\ Dbefore since,for,because,in that在表示原因时的区别是什么？ President Andrew Jackson was a controversial figure in his own day and __ever since. She told me yesterday that she had lived in the south since the New Year Lily with her parents has been in the Greener China since three years ago.