現(xiàn)在完成時及動詞變化

1、現(xiàn)在完成時定義1. 表示過去不確定的時間發(fā)生的動作，對現(xiàn)在有影響。2. 表示過去發(fā)生并持續(xù)到現(xiàn)在的動作。 規(guī)則動詞：規(guī)則動詞的過去分詞的構(gòu)成規(guī)則與規(guī)則動詞的過去式的構(gòu)成規(guī)則相同。四點變化規(guī)則： (1）、一般動詞，在詞尾直接加“ ed ”。 work-worked-worked,visit-visited-visited (2）、以“ e ”結(jié)尾的動詞，只在詞尾加“ d ”。 live-lived-lived, (3）、以“輔音字母 + y ”結(jié)尾的動詞，將 "y" 變?yōu)?"i" ，再加“ ed ”。 study-studied-studied,cry-c

2、ried-cried (4）、重讀閉音節(jié)結(jié)尾，末尾只有一個輔音字母，先雙寫該輔音字母，再加“ ed ”。 stop-stopped-stopped,drop-dropped-dropped 不規(guī)則動詞：ABC型原型 過去式 過去分詞 原型過去式過去分詞begin began begun give gavegivenbearboreborn,bornegowentgoneblow blew blownknow knew knownbreak broke broken grow grew grownchoose chosechosenlie lay laindraw drew drawnride

3、rode riddendrive drove driven rise rose risendo / doesdiddonering rang rungfly flew flown shake shook shakenforgive forgave forgivensing sang sungforget forgot forgotten,forgotbe was/were beenfreeze froze frozensink sank sunkwrite wrote writtenswim swam swumtake took taken throw threw thrownwear wor

4、e worndrink drank drunk see saw seenAB型 原型 過去式 過去分詞 原型 過去式 過去分詞 can could willwouldmaymightbewas/wereshallshouldAAA型 原型 過去式 過去分詞 原型 過去式 過去分詞 burstburstburstputputputcastcastcastsetsetsetcutcutcutshutshutshuthithithitspreadspreadspreadhurthurthurtletletletcostcostcostreadreadreadAAB型 ABA型 原型 過去式 過去分詞

5、 原型 過去式 過去分詞 beat beat beaten,beat become became become runranruncomecamecome特殊情況 read read read (read原形發(fā)音為/ri:d/，過去式和過去分詞發(fā)音為/red/) ABB型 原型 過去式 過去分詞 原型 過去式 過去分詞 bring brought brought sellsoldsoldbuyboughtboughtshootshotshotbuildbuilt built saysaidsaidburn burnt burnt sitsatsatcatchcaught caught stan

6、dstoodstooddigdugdugshineshoneshonefeelfeltfeltsweep swept swept fightfoughtfoughtsleepslept slept find foundfoundteach taught taught feed fedfedtell told told get got got think thought thought hanghung,hangedhung,hangedwin won won hearheardheardwind wound wound holdheldheldmake made made keep kept kept meanmeant mean