英语各种时态的标志是什么 看到那些词语会想到是什么时态答:过去完成时before, by, until, when, after, once, as soon as 过去进行时this morning, the whole morning, all day, yesterday, from nine to ten last evening… when, while 将来进行时soon, tomorrow, this evening, on Sunday, by this time, tomorrow, in two days, tomorrow evening ...