动词第三人称单数变化规则如下

动词第三人称单数变化规则如下1/6高三英语复习动词第三人称单数变化规则1)一般情况下，动词后面直接加-s.例如：worksgetssaysreads2)以ch,sh,s,x或o结尾的动词,在后面加-es。例如：go-goesteach-,teachewash-washesbrush-brushes,catch-catches,do-does,fix-fixes3)以辅音字母+y结尾的动词，把y变为i再加-es.例如：study-studiestry-triescarry-carries,fly-fliescry-cries现在分词变化规则1.直接+ing(例：sleep+ingsleeping)2.去e+ing(例：bite-e+ingbiting)3重读闭音节，且末尾只有1个辅音字母，双写辅音字母+ing(例：sit+t+ingsitting)4.特殊变化：die-dying,lie-lying，tie-tying3、现在分词的变化规则：（1）一般情况下，直接在动词后加－ingwork----workingsleep-----sleepingstudy-----studying（2）动词以不发音的－e结尾，要去－e加－ingtake-----takingmake-----makingdance-----dancing（3）重读闭音节的动词，要双写词尾字母，再加－ingcut-----cuttingput-----puttingbegin------beginning（4）以－ie结尾的动词，把变成y再加－inglie-----lying动词第三人称单数变化规则如下2/6tie-----tyingdie-----dying形容词的比较级和最高级变化形式规则如下构成法原级比较级最高级①一般单音节词末尾加er和eststrongstrongerstrongest②单音节词如果以e结尾，只加r和ststrangestrangerstrangest③闭音节单音节词如末尾只有一个辅音字母，须先双写这个辅音字母，再加er和estsadbighotsadderbiggerhottersaddestbiggesthottest④少数以y,er(或ure),ow,ble结尾的双音节词，末尾加er和est(以y结尾的词，如y前是辅音字母，把y变成i，再加er和est，以e结尾的词仍加r和st)angryclevernarrownobleangriercleverernarrowernoblerangrestcleverestnarrowestnoblest⑤其他双音节和多音节词都在前面加单词more和mostdifferentmoredifferentmostdifferentb.其他词都在前面加more,most构成比较级及最高级：原级比较级最高级importantmoreimportantmostimportantdifficultmoredifficultmostdifficultinterestingmoreinterestingmostinterestingusefulmoreusefulmostusefulI.学会下列形容词的比较级和最高级：原级比较级最高级1.talltallertalleststrongstrongerstrongestoldolderoldest2.largelargerlargestfinefinerfinest动词第三人称单数变化规则如下3/6latelaterlatest3.bigbiggerbiggesthothotterhottestthinthinnerthinnest4.easyeasiereasiestbusybusierbusiesthappyhappierhappiest5.valuablemorevaluablemostvaluabledangerousmoredangerousmostdangerouscomfortablemorecomfortablemostcomfortable1.有几个形容词有特殊的比较级和最高级形式：原级比较级最高级goodwellbetterbestbadillworseworstmanymuchmoremostlittlelessleastfarfartherfurtherfarthestfurthestoldolderelderoldesteldest2.双音节词除了以“辅音＋y”结尾的词外，还有以ow,er,le结尾的词，和个别其他双音节词，可以用加词尾的办法构成比较级和最高级：原级比较级最高级narrownarrowernarrowestclevercleverercleverestsimplesimplersimplestcommoncommonercommonest3.也有少数单音节词可以加more和most的办法构成比较级和最高级：原级比较级最高级pleasedmorepleasedmostpleasedtiredmoretiredmosttiredgladmoregladmostglad名词的复数形式动词第三人称单数变化规则如下4/6构成方法例词在词尾加-s1.以s、x、sh、ch结尾的名词后加-es2.如词尾是e,只加-s如词尾为–f或–fe,则一般变为–ves以辅音+y结尾的名词，变y为i再加-es以元音+y结尾的名词，加-s以辅音+o结尾的名词，加-es以元音+o结尾的名词，加-s以-th结尾的名词，加-s英语里有一些名词的复数形式不是以词尾-s或-es构成，构成方法例词变内部元音foot[u]—feet[i:]man[]—men[e]mouse[au]—mice[ai]woman[]—women[e]词尾加-enox—oxen(公牛)child[ai]—children[i]形式不变（通形名词----单、复数同形）deer—deerfish—fishsheep—sheep集合名词（只有复数，没有单数。）trouserspeople（人，人民）glasses（眼镜）名词做定语1.只在后面名词加复数2.man,woman随之后面的名词1.appletree—appletrees2.mandoctor—mendoctors3.sportsshopsportsshoes动词第三人称单数变化规则如下5/6而变化，后单其单，后复其复。3.sport作定语永远用作复数。表示国籍的名词（中日不变，英法变，其余词后加s）Chinese—ChineseJapanese—JapaneseEnglishman—EnglishmenFrenchman—FrenchmenAmerican—Americans其它名词复数的规则变化1)以y结尾的专有名词，或元音字母+y结尾的名词变复数时，直接加s变复数：如：twoMarystheHenrysmonkey---monkeysholiday---holidays比较：层楼：storey---storeysstory---stories2)以o结尾的名词，变复数时：a.加s，如：photo---photospiano---pianosradio---radioszoo---zoos；b.加es，如：potato--potatoestomato--tomatoesc.均可，如：zero---zeros/zeroes3)以f或fe结尾的名词变复数时：a.加s，如：belief---beliefsroof---roofssafe---safesgulf---gulfs；b.去f,fe加ves，如：half---halvesknife---knivesleaf---leaveswolf---wolveswife---wiveslife---livesthief---thieves；c.均可,如：handkerchief:handkerchiefs/handkerchieves动词变名词1.在词尾加er,r,双写加er或or:A.play_player,sing_singer,wait_waiter,find_finder,thrill_thriller，hunt-hunterB.write_writer,drive_driver,come_comer,explore_explorerdance_dancerC.run_runner,win_winner,rob_robber,traval_travaller动词第三人称单数变化规则如下6/6D.visit_visitor,invent_inventor,act-actor,advise-advisor2.在词尾加ing:build_building,draw_drawing,end_ending,begin_beginning,swim_swimming，skate_skating,feel_feeling,say_saying,mean_meaning,cross_crossing，surf_surfing,paint_painting3.在词尾加ion或去e加ion:A.decide_decision,describe_description,produce_production,celebrate_celebration,pronounce_pronunciation,decorate_decorationgraduate_graduation,frustrate-frustration,pollute_pollutioncontribute_contribution,congratulate_congratulation,educate_education，organize_orgnization,donate_donation,appreciate_appreciation，operate_operation,invite_invitationB.discuss_discussion,invent_invention,attract_attractionimpress_impression,inject_injection,instruct_instruction4.其它：know_knowledge,please_pleasure,enjoy_enjoyment,practise_practice，die_death,succeed_success,weigh_weight,sit_deat,change_chance，enter_entrance,fly_flight,rob_robbery,discover_discovery，faile_failure,appear_appearance,breathe_breath