求一般現在時、一般過去時、一般將來時、現在進行時、過去進行時、現在完成時、過去完成時的標誌詞~

求一般現在時、一般過去時、一般將來時、現在進行時、過去進行時、現在完成時、過去完成時的標誌詞~

一般現在時:every day,every year,always,usually,often,sometimes,hardly,never等.
一般過去時:ago,yesterday,last year,last week,just now(剛才),the day before yesterday(前天),in 1999,in the past(在過去)
一般將來時:tomorrow,next year,next week,the day after tomorrow(後天),in the future
現在進行時:now,Look!Listen!It's 7 o'clock,we are doing .(現在幾點了我們正在…)
過去進行時:at this time of yesterday(在昨天的這個時候)at that time,at 7 o'clock last night現在完成時:already,ever,never,yet,so far(到目前為止),in the past/ last few years
(在過去的幾年間),over the years(近年來)
過去完成時:1. by the end of last year.
e.g. By the end of last term,we had learned 5000 new words.
2. By the time sb. +動詞過去式
e.g. The bus had already left by the time I got there.
3.賓語從句
過去完成時的動作發生在過去的過去. He said he had been to Beijing twice.
他說他已經去過北京兩次.
(因為“說”said就是過去式,而去北京的動作發生在說said的過去,
所以用過完而不用現完.)