來(lái)源:網(wǎng)絡(luò)資源 2022-04-21 17:17:08
一般過(guò)去時(shí)的構(gòu)成:
1) 肯定形式:S+動(dòng)詞過(guò)去式(v.+ed)+O.
2) 否定形式:S+助動(dòng)詞did not+動(dòng)詞原形+O.
3) 疑問(wèn)形式:助動(dòng)詞Did +S.+動(dòng)詞原形+O.
eg. Last week Tom helped his parents do housework at home
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