一般過去時：

1.概念：過去某個時間里發(fā)生的動作或狀態(tài);過去習慣性、經(jīng)常性的動作、行為。

2.時間狀語：ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc.

3.基本結構：be動詞;行為動詞

4.否定形式：was/were+not;在行為動詞前加didn't，同時還原行為動詞。

5.一般疑問句：was或were放于句首;用助動詞do的過去式did 提問，同時還原行為動詞。

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

I didn't know you were so busy.

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