1、所有或任何時(shí)候都發(fā)生的動(dòng)作或情況，即重復(fù)發(fā)生的動(dòng)作
--- How often does she visit her parents?
--- Twice a month.
2、永恒的真理
Summer follows spring.
3、①在條件或時(shí)間狀語(yǔ)從句中
I’ll let you know as soon as he gets there.
②討論計(jì)劃和時(shí)間表或日程表時(shí)
We leave at 11:15 and arrive at 17:50 tomorrow.
4、固定詞組如 I see（明白）、I hear（聽說）、I think（認(rèn)為、想）、I feel（感覺）以引出已經(jīng)了解的情況
I see there’s some trouble in London.
--- How often does she visit her parents?
--- Twice a month.
2、永恒的真理
Summer follows spring.
3、①在條件或時(shí)間狀語(yǔ)從句中
I’ll let you know as soon as he gets there.
②討論計(jì)劃和時(shí)間表或日程表時(shí)
We leave at 11:15 and arrive at 17:50 tomorrow.
4、固定詞組如 I see（明白）、I hear（聽說）、I think（認(rèn)為、想）、I feel（感覺）以引出已經(jīng)了解的情況
I see there’s some trouble in London.