① 一般情況下,在動詞原形后直接加ed.
如：wanted,played.
② 以不發(fā)音的字母e結尾的動詞,直接加d.
如：hoped,lived.
③ 重讀閉音節(jié)單詞需雙寫最后一個輔音字母,再加ed.如：stopped,shipped.
④ 以輔音字母+y結尾的動詞變y為i,再加ed.
如：studied,worried.
⑤ 有些動詞不符合上面的規(guī)則,需要特殊記憶.
如：am(is)-was,are-were,go-went,eat-ate,
swim-swam,buy-bought,see-saw,
teach-taught,bring-brought,think-thought,
fall-fell,hurt-hurt,break-broke,win-won,
lose-lost