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規(guī)則動詞的過去式詞尾變化有幾種：
1．一般情況下加ed，如watched, planted, watered, pulled, climbed, picked。
2．以不發(fā)音字母e結尾的加d，如liked, moved, tasted。
3．以輔音字母加y結尾的變y為i再加ed，如study——studied。
4．以1個元音字母加1個輔音字母結尾的重讀閉音節(jié)，雙寫后一個輔音字母再加ed，如stop——stopped。
詞尾讀音有3種：
a．在濁輔音和元音后讀[d]，如lived, watered, listened, played。
b．在清輔音后讀[t]，如liked, helped, watched。
c．在[t],[d]音后讀[Id]，如planted, wanted, handed(上交)。
不規(guī)則動詞的過去式變化則沒有什么規(guī)律，請大家背熟記牢：
sit —— sat throw —— threw am, is —— was
drink —— drank draw —— drew are —— were
sing —— sang fly ——flew do —— did
begin —— began grow —— grew have, has —— had
swim —— swam put —— put may —— might
give —— gave cut —— cut can —— could
ring —— rang let —— let shall ——should
run —— ran read —— read will —— would
ride —— rode catch —— caught go —— went
write —— wrote teach —— taught eat —— ate
drive —— drove think —— thought hear —— heard
keep —— kept buy —— bought see —— saw
sleep —— slept fight —— fought find —— found
sweep —— swept hold —— held wear —— wore
feel —— felt tell —— told meet —— met
come —— came get —— got mean —— meant
become —— became make —— made speak —— spoke
take —— took say —— said
1）is, am -was are-were
2) begin-began ring-rang drink-drank swim-swam give-gave
sing-sang sit-sat run-ran have-had make-made
come-came eat-ate
3) write-wrote ride-rode speak-spoke drive-drove stand-stood
tell-told win-won get-got take-took
4) sleep-slept sweep-swept feel-felt keep-kept
spell-spelt spend-spent bend-bent
meet-met go-went
5) know-knew fly-flew blow-blew grow-grew
throw-threw draw-drew (glow-glowed)
6) teach-taught catch-caught buy-bought
fight-fought think-thought
7) find-found hear-heard say-said lie-lay
see-saw learn-learnt mean-meant
8) put-put read-read cut-cut let-let
