一般過去時的時間狀語:
yesterday, last week,…ago, in1980, in October, just now, 具體的時間狀語
共同的時間狀語:
this morning, tonight,this April, now, once,before, already, recently,lately
現(xiàn)在完成時的時間狀語
for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,
不確定的時間狀語
3）現(xiàn)在完成時可表示持續(xù)到現(xiàn)在的動作或狀態(tài),動詞一般是延續(xù)性的,如live, teach, learn, work, study, know.
過去時常用的非持續(xù)性動詞有come, go, leave, start, die, finish, become, get married等