【正文】 must（二）A. 原形與過去式和過去分詞完全相同. costcostcostwrite（寫）wrotewritten grow（生長）grewgrown如: want—wanted, work—worked, need—needed, clean—cleaned 2. 以不發(fā)音的e結(jié)尾的在詞尾加d。 throw（扔；擲） threw thrown ride（騎）roderidden (雙寫d )drive（駕駛）drovedrivenhithithit hurthurthurt readreadread6. 動(dòng)詞原形中的ay為ai,… sweepsweptsweptmakemademade(雙寫d ) 　　forgetforgotforgotten c) 把動(dòng)詞原形中的個(gè)別字母或字母組合改為o變成過去式, 在過去式后加n變成過去分詞．wakewokewoken shineshone/ shinedshoneSee（看見）sawseen如：keep—kept, sleep—slept, feel—felt, smell—smelt 6. 含有元音字母o / i的詞，將o / i變成a。如:build—built, lend—lent, send—sent, spend—spent 3. 以n結(jié)尾的詞，在詞后加t。 　　　freeze（結(jié)冰）frozefrozen2.sellsoldsold sitsatsat c ) 動(dòng)詞原形后加t, … sleepsleptslept findfoundfound lay lain breakbrokebroken hidehidhidden eatateeaten riseroserisen fly flew /flu:/ flown把動(dòng)詞原形中o改為e變成過去式，在原形詞尾加n變成過去分詞． blowblewblown drinkdrankdrunk feelfeltfelttelltoldtold過去式和過去分詞中含有ought, aught, 讀音是［?:t］brightbroughtbrought setsetset如：study—studied, carry—carried, hurry—hurried, marry—married 大體上歸納有以下六條記憶法： 1. 以t結(jié)尾的詞，過去式與原形相同。（雙寫d ） write（寫）——wrote——written(雙寫t) go（去）——went ——gonedo（做）——did ——done beat（打?。?beat beatenlie（平躺）——lay ——lain see（看見）——saw ——seen wear（穿）——wore—— worn be ( am, is, are )—— was, were ——been（6）ABAn型（動(dòng)詞過去分詞在原形后加n/en)blow（吹）blewblown 　　forget（忘記）forgotforgottencutcutcut thinkthoughtthought ringrangrung dodid donedrawdrew drawn／?:／　　 gowent gone (雙寫t ) rideroderidden runranrun7. a）動(dòng)詞原形中的d為t,…sendsentsent mistake（誤解）mistookmistaken (雙寫t ) know（知道）knewknowngive（給）gavegiven (regretted, regretting)