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、經常性的動作、行為。
2.時間狀語:ago, yesterday, the day before yesterday, last week, last (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:主語+動詞的過去式或 be 的過去式+名詞
4.否定形式:主語+was / were+not+其他;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。eg:①She often came to help us in those days.那些天她經常來幫助我們。②I didn't know you were so busy.我不知道你這么忙。
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