一般在动词原形末尾加ing.doc

①一般在动词原形末尾加ing，如do→doing，sing→singing，comfort→comforting②以不发音的e结尾的动词，先去e，再加ing，如dance→dancing，hike→hiking，write→writing,make→making,take→taking※注意※这里的e必须不发音，若发音，则不能去掉，如see→seeing③以重读闭音节结尾的动词，并且末尾只有一个辅音字母，应双写这一字母，再加ing，如cut→cutting，swim→swimming④以ie结尾的动词，要把ie变成y再加ing，如die→dying，lie→lying.不过也有y变ie加ing的。⑤以ic结尾的动词，要把ic变成ick再加ing，如picnic→picnicking，traffic→trafficking以上规则用一句话概括成的口诀就是：直接双写去e，ie变ying一、A—A—A型，即原形、过去式和过去分词三者都相同。（共7个）cost—cost—costcut—cut—cuthit—hit—hithurt—hurt—hurtlet—let—letput—put—putread—read—read二、A—B—B型，即过去式、过去分词相同。（共41个）1．过去式和过去分词都含有-ought。（4个）bring—brought—broughtbuy—bought—boughtthink—thought—thoughtfight-fought-fought2．词尾有-ild，-end时，只需把d变为t。（4个）build—built—builtlend—lent—lentsend—sent—sentspend—spent—spent3．过去式、过去分词都含有-aught。（2个）catch—caught—caughtteach—taught—taught4．把-eep、-eel变为-ept、-elt。（4个）keep—kept—keptsleep—slept—sleptsweep—swept—swept5．把-ell变为-old。（2个）tell—told—toldsell—sold—sold6．把-ell、-ill变为-elt或-ilt。（4个）smell—smelt—smeltspell—spelt—speltfeel—felt—feltspill—spilt—spilt7．把-eed、-ead、-eet变为-ed或-et。（4个）feed-fed-fedlead-led-ledspeed-sped-spedmeet-met-met7．过去式、过去分词都在原形词尾加t。（3个）learn—learnt—learntmean—meant—meantspoil—spoilt—spoilt8．过去式、过去分词词尾去y变-id（4个）say—said—saidpay—paid—paidlay—laid—laidhear—heard—heard9．改变HYPERLINK"http://baike.baidu.com/view/749940.htm"\t"_blank"元音字母。（11个）meet—met—metget—got—gotsit—sat—satfind—found—foundhold—held—heldspit—spat—spatshine—shone—shonewin—won—wonhang—hung—hungdig—dug—duglose—lost—lost10．改变HYPERLINK"http://baike.baidu.com/view/749941.htm"\t"_blank"辅音字母。（1个）make—made—made11．改变元、辅音字母。（4个）leave—left—leftstand—stood—stoodhave（has）—had—hadunderstand—understood—understood三、A—B—C型，即原形、过去式、过去分词都不相同。（共37个）1．i—a—u变化。（7个）begin—began—begundrink—drank—drunksing—sang—sungring—rang—rungswim—swam—swumsink—sank—sunkspring-sprang-sprung2．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。（5个）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。（4个