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1、规则动词的过去式由“动词原形+-ed”构成，具体变化有： 1.直接在词尾加-ed。如:want—wanted,work—worked,need—needed,clean—cleaned 2.以不发音的e结尾的在词尾加-d。如：like—liked,live—lived,use—used,move—moved 3.以一个元音字母加一个辅音字母结尾的重读闭音节动词，先双写结尾的辅音字母，再加-ed。如：stop—stopped,trip—tripped 4.以辅音字母加y结尾的动词，先把y变成i，再加-ed。如：study—studied,carry—carried,hurry—hu
2、rried,marry—married 【二级解密】 规则动词词尾加-ed有三种读音： 1.在清辅音后读作[t]。如：asked,helped,watched,stopped 2.在浊辅音和元音后读作[d]。如：enjoyed,studied,moved,called 3.在t/d后读作[id]。如：wanted,needed 【三级解密】 不规则动词变化见课本后的不规则动词表。大体上归纳有以下六条记忆法： 1.以t结尾的词，过去式与原形相同。如：put—put,let—let,cut—cut,beat—beat 2.以d结尾的词，把d变成t。如:build—built
3、,lend—lent,send—sent,spend—spent 3.以n结尾的词，在词后加t。如：mean—meant,burn—burnt,learn—learnt 4.以ow/aw结尾的词，把ow/aw变成ew。如：blow—blew,draw—drew,know—knew,grow—grew 5.含有双写字母的词，将双写改为单写，在词尾加t。如：keep—kept,sleep—slept,feel—felt,smell—smelt 6.含有元音字母o/i的词，将o/i变成a。如：sing—sang,give—gave,sit—sat,drink—drank不规则动词过去式
4、表 be(amis)wasarewere comecame gowent do(does)did flyflew drawdrew makemade singsang have(has)had eatate drinkdrank putput letlet readread cancould seesaw meetmet getgot forgetforgot taketook cancould maymight shallshould willwould knowknew beginbegan bendbent buildbui
5、lt spendspent meanmeant learnlearnt/learned buybought thinkthought teachtaught catchcaught sleepslept sweepswept keepkept speakspoke riderode feelfelt leaveleft givegave runran ringrang sitsat swimswam saysaid telltold throwthrew winwon writewrote
