一般過去時(shí)

　　1、概念：過去某個(gè)時(shí)間里發(fā)生的動(dòng)作或狀態(tài)；過去習(xí)慣性、經(jīng)常性的動(dòng)作、行為。

　　2、時(shí)間狀語：ago，yesterday，the day before yesterday，last week，last(year，night，month…)，in 1988，just now，at the age of 5，one day，long long ago，once upon a time，etc.

　　3、基本結(jié)構(gòu)：be動(dòng)詞；行為動(dòng)詞的過去式

　　4、否定形式：was/were+not;在行為動(dòng)詞前加didn't，同時(shí)還原行為動(dòng)詞。

　　5、一般疑問句：was或were放于句首；用助動(dòng)詞do的過去式did 提問，同時(shí)還原行為動(dòng)詞。

　　6、例句：She often came to help us in those days.

　　I didn't know you were so busy.