since是介词、连词、副词、名词,作介词时意为“ 自……以后;(表示气愤)何曾”,作连词时意为“自……以来;因为”,作副词时意为“自……以后;此后;之前”,作名词时意为“(法、美)新斯(人名)”。
Since many 出自多;来自多;外射门自多
Ever since 自从;正在翻译;从那以后
Since childhood 自幼;自小;自小时候
since both 因为这两种;因为两者
Collaboration since 自协作;自从协作
Since Technology 圣驰科技
president since 自总统;统以来
Sculpture Since 西方当代雕塑
Since then, I have the appetite.
从那时起,我有了食欲。
Since I know him.
自我认识他以来。
Or maybe not, since they only keep it for one month.
或者,也许不会,因为他们只保持它为一个月。
for+段时间,而since+点时间/过去时。
eg:He has lived here for 5 years.
Her father has been dead since three years old ago.
since和for+时间,都可以和现在完成时连用,并且谓语动词常用延续性动词。
since和for+时间结构可以进行语句转化。
for+段时间常与现在完成时连用,也可以和一般将来时,一般过去时连用。
此外,in+段时间可以表示“在......以后(将)”,与将来时连用。