at a time,at times,at onetime,sometime,sometimes分别是什么意思?
问题描述:
at a time,at times,at onetime,sometime,sometimes分别是什么意思?
答
at a time=曾经的某一次
at times=时常
at one time=曾经
sometime=将来或过去的某时
sometimes=有时 ,几次