pep小学英语六年级下册课本中所有过去式和单词,至少60个,要多种形式的

规则的：return-returned,ask-asked,play-played,jump-jumped,walk-walked,climb-climbed,turn-turned,teach-teached,learn-learned,row-rowed,watch-watched,wash-washed,look-looked,plant-planted,help-helped,wo...