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Camping复习playhide-andseekboilwatercookamealpickuprubbishwashoutsideplanttreesPasttenseIplayedfootballyesterday.Iwashedthedishesyesterday.Iplantedsometreesyesterday.Whatcanyoufind?通过阅读，我发现：动词原形变过去式时，一般情况下直接加________edPresentTensePastTenseplayboilcookpickplayedboiledcookedpickedTomlikedwatchingTVtenyearsago.Sallydancedintheclassroomjustnow.通过阅读，我发现：动词以不发音字母“e”结尾的词变过去式时，直接加____.dPresentTensePastTenseskatelivesmiledecideskateddecidedlivedsmiledMissYancarriedalotofbooksjustnow.JohnstudiedinthelibrarylastSunday.通过阅读，我发现：动词以“辅音字母+y”结尾的词变过去式时，把y为___再加_____.ediPresentTensePastTensecryworryplaystaycriedworriedstayedplayed必做题选做题watchlikecarrywatertasteenjoyPresentTensePastTensewaterlikecarrywateredlikedcarriedPresentTensePastTensewatchtasteenjoywatchedtastedenjoyedReadandtickorcross.Iwalktoschoolyesterday.WeplaiedfootballintheparklastSunday.IliveinBeiJing5yearsago.Expansionhave/hasdo/doesam/isarehaddidwaswerePresentTensePastTensePresentTensePastTensegocomeeatdrinkwentcameatedrankPresentTensePastTensewritemakewrotemade不规则变换形式