肯定句式：主语+动词（过去式）+其它

否定句式：主语+didn't+动词（原形）+其它（did not=didn't）

一般疑问句：Did+主语+动词（原形）+其它（do，does的过去时均为did）

注：did和didn't是构成一般过去时的助动词，其特点是要在其后跟动词的原形。

规则动词的过去式

⒈ 一般情况下，在动词原形后面加-ed

如：looked，played，started，visited，stayed

⒉ 以不发音e结尾的动词，在词尾直接加-d

如：lived，closed，liked，loved，tasted

⒊ 以"辅音字母+y"结尾的动词，先将y改为i再加-ed

study→studied，try→tried，cry-→cried，copy→copied，carry-→carried

⒋ 以重读闭音节（即辅音+元音+辅音）或r音节结尾，未尾只有一个辅音字母的动词，要先双写这个辅音字母后，再加-ed

如：stop→stopped，plan→planned

不规则动词的过去式需特殊记忆

⒈ is→was, am→was, are→were, do→did, have→had

⒉ begin→began, ring→rang, run-→ran, drink→drank, sing→sang, swim→swam, sit→sat, give→gave, make→made, come-→came, eat→ate

⒊ write→wrote, speak→spoke, drive→drove, choose→chose, tell→told, ride→rode, shoot→shot, get→got, win→won, forget→forgot, shake→shook, take→took, stand→stood

⒋ go→went, meet→met, sleep-→slept, sweep→swept, spell→spelt, feel→felt,keep→kept, spend→spent, bend→bent

⒌ know→knew, fly→flew, blow→blew, grow→grew, throw→threw, draw→drew, 特别注意：glow→glowed

⒍ teach→taught, catch→caught, buy→bought, fight→fought, think→thought

⒎ find→found, hear→heard, say-→said, lie→lay, see→saw, learn→learnt, mean→meant

⒏ put→put, read→read, cut→cut, let-→let