一般現(xiàn)在時(shí)　　every …, sometimes,　at …, on Sunday,

　　一般過去時(shí)　　yesterday, last week, an hour ago, the other day, in 1982, just now

　　一般將來時(shí)　　next…, tomorrow, in+時(shí)間,

　　現(xiàn)在完成時(shí)　　for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always, recently

　　過去完成時(shí)　　before, by, until, when, after, once, as soon as

　　過去進(jìn)行時(shí)　　this morning, the whole morning, all day, yesterday, from nine to ten last evening… when, while

　　將來進(jìn)行時(shí)　　soon, tomorrow, this evening, on Sunday, by this time, tomorrow, in two days, tomorrow evening