不规则动词过去式变化规律.doc

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1、不规则动词的过去式和过去分词变化规则表1：1、A—A—A型，即原形、过去式和过去分词三者都相同。cost—cost—costcut—cut—cuthit—hit—hithurt—hurt—hurtlet—let—letput—put—putread—read—read2、A—B—B型，即过去式、过去分词相同。1)过去式和过去分词都含有-ought。bring—brought—broughtbuy—bought—boughtthink—thought—thoughtfight-fought-fought2)词尾有-ild

2、，-end时，只需把d变为t。build—built—builtlend—lent—lentsend—sent—sentspend—spent—spent3)过去式、过去分词都含有-aught。catch—caught—caughtteach—taught—taught4)把-eep变为-ept。keep—kept—keptsleep—slept—sleptsweep—swept—swept5)把-ell变为-old。tell—told—toldsell—sold—sold6)过去式、过去分词都含有-elt或-ilt。s

3、mell—smelt—smeltspell—spelt—speltfeel—felt—felt7)过去式、过去分词都在原形词尾加t。learn—learnt—learntmean—meant—meant8)过去式、过去分词词尾去y变-id。say—said—saidpay—paid—paidlay—laid—laidhear—heard—heard9)改变元音字母。meet—met—metget—got—gotsit—sat—satfind—found—foundhold—held—heldshine—shone—sho

4、newin—won—wonhang—hung—hunglose—lost—lost10)改变辅音字母。　　make—made—made11)改变元、辅音字母。leave—left—leftstand—stood—stoodhave(has)—had—hadunderstand—understood—understood3、A—B—C型，即原形、过去式、过去分词都不相同。1)原形、过去式和过去分词都不相同。　　be—was—beendo—did—donefly—flew—flowngo—went—gonelie—lay—

5、lainshow—showed—shownwear—wore—worn2)词尾为-ow，-aw时，过去式将其变为-ew，过去分词在其原形后加n。　　blow—blew—blowndraw—drew—drawngrow—grew—grownknow—knew—knownthrow—threw—thrown（show除外）3)词尾为“i＋辅（1个）＋e”，过去式将i变为o，过去分词多在原形后加n，若那个辅音字母为d或t，须双写d或t后加n。（give，hide除外）　　drive—drove—drivenwrite—wr

6、ote—writtenride—rode—riddenrise—rose—risen　arise—arose—arisen4)过去分词在过去式后加（e）n。　　break—broke—brokenchoose—chose—chosenfreeze—froze—frozenspeak—spoke—spokenwake—woke—woken5)过去分词由过去式加-ten构成。　　forget—forgot—forgotten6)过去分词由原形加（e）n构成。　　be—was（were）—beeneat—ate—eate

7、nfall—fell—fallengive—gave—givensee—saw—seenhide—hid—hidden（hid）7)词尾为-ake时，过去式将其变为-ook，过去分词在原形词后加-n。　　take—took—takenmistake—mistook—mistaken8)i—a—u变化。　　begin—began—begundrink—drank—drunksing—sang—sungring—rang—rungswim—swam—swumsink—sank—sunk4、A—B—A型，即过去分词和原形相

8、同。　　come—came—comebecome—became—becomerun—ran—run5、情态动词型，只有原形和过去式，没有过去分词。can—couldmay—mightwill—wouldshall—should不规则动词的过去分词变化规则表2：(1)AAA型（动词原形、过去式、过去分词同形）cost（