各個時態的標志詞

　　一般現在時 sometimes, often, usually, always, every..., on Monday/..., on

　　weekdays,in spring/...,in the morning/...,等表示現在經常發生的動作的時間詞。It seldom snows here.

　　He is always ready to help others.

　　Action speaks louder than words.

　　一般過去時 last..., ...ago, yesterday等表示過去時間的短語。They are going to have a competition with us in studies. It is going to rain.

　　一般將來時 next..., soon, in+段時間，tomorrow等表示將來的時間短語。

　　現在進行時 now, at the moment, right now, 還有動詞 look, listen, 及句式，It's 6

　　o'clock, It's time for sth.

　　過去進行時 at eight o'clock yesterday, at this time yesterday, from one o'clock to

　　three o'clock yesterday, between one o'clock and three o'clock

　　yesterday, when/while 從句等表示過去的具體時間短語。

　　現在完成時 already,yet,ever,never, before, just. recently, these days,

　　in/during the past/last two years, how long 句式。

　　過去完成時 by the end of ..., 及表示過去的從句，如，before等，主句是過去時的賓語從句。As soon as we got to the station, the train had left. By the end of last month， We had reviewed four books

　　過去將來時 主句是過去時的賓語從句中如表示將來的意思就用過去將來時。He said he would go to Beijing the next day. I asked who was going there