once的用法时态once用作连词时,意为“一旦……就……”,用于连接时间状语从句,相当于as soon as.如:Once you ...
标签: since的用法时态
since的用法,since的八种用法详解接时间点:如 I have stayed in that country since 1995.要求:谓v.用...
once的用法时态once用作连词时,意为“一旦……就……”,用于连接时间状语从句,相当于as soon as.如:Once you ...
since的用法,since的八种用法详解接时间点:如 I have stayed in that country since 1995.要求:谓v.用...