一般過(guò)去式句子的結(jié)構(gòu)：主語(yǔ) + 動(dòng)詞過(guò)去式（ be 動(dòng)詞的過(guò)去式/ 行為動(dòng)詞的過(guò)去式）　　
如：
She was a student two years ago.
We were on the farm last week.
We sang at the party yesterday.
否定形式
①was/were+not；
②在行為動(dòng)詞前加didn't,同時(shí)還原行為動(dòng)詞
一般疑問(wèn)句
①Did+主語(yǔ)+do+其他?
②Was\Were+主語(yǔ)+ do sth
祝開(kāi)心~