动词第三人称单数词尾变化形式及读音动词第三人称单数词尾变化有三种形式。(1)一般动词在词尾加-s，-s在清辅音后读s，在浊辅音或元音后读zds读dz，ts读ts。如：helphelpshelps，knowknowsnEuz，getgetsgets，readreadsri:dz(2)以字母s，x，ch，sh或有些以o结尾的动词加-es，-es读iz。如：guessguessesgAsiz，fixfixesfiksiz，teachteachesti:tFiz，washwasheswRFiz注意：gogoesgEuz，dodoesdQz(3)以辅音字母+y结尾的动词，先变y为i，再加-es，-ies读iz。如：carrycarrieskAriz，flyfliesflaiz注：在playplayspleiz，saysayssez中，字母y前为元音字母，第三人称单数形式直接在动词后面加-s。(4)特殊词例外。如：beis，havehas以不发音字母“e”结尾的开音节词，如果尾音是s，z时，加“s”后字母“e”发音， 与所加“s” ，一起读做iz。 如： closecloses iz规则动词和不规则动词的过去式变化如下： 一般情况下，动词词尾加 -ed ，如： workworked piayplayed want-wanted act-acted 以不发音的 -e 结尾动词，动词词尾加 -d，如： live-lived move-moved decide-decided decline-declined hope-hoped judgejudged raise-raised wipe-wiped 以辅音字母 + y结尾的动词，把-y变为-i 再加-ed，如： study-studied try-tried copy-copied justify-justified cry-cried carry-carried embody-embodied empty-emptied 以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加 -ed，如： stop-stopped beg-begged fret-fretted drag-dragged dropdropped plan-planned dot-dotted drip-dripped 注：不规则动词的过去式变化规律性不强，须多加记忆。 go went make made get got buy bought come - came fly-flew 动词过去式,过去分词不规则变化 AB型 can - could shall - should will - would may - mightAAA型 cost cost cost cut cut cut hit hit hithurt hurt hurt let let let must must must put put put set set set shut shut shutread read read AAB型 beat beat beaten ABA型 become became become run ran runcome came come ABB型 bring brought brought buy bought boughtthink thought thought catch caught caughtteach taught taught build built builtlend lent lent send sent sentspend spent spent dig dug dughang hung hung feel felt feltkeep kept kept sleep slept slept sweep swept swept leave left leftsmell smelt smelt spill spilt spiltlay laid laid pay paid paidsay said said sell sold soldtell told told sit sat satspit spat spat stand stood stoodunderstand understood understood learn learnt learnt mean meant meantspoil spoilt spoilt shine shone shonewin won won have had hadmake made made hear heard heardfind found found hold held heldABC型 begin began begun drink drank drunkring rang rung sing sang sungsink sank sunk swim swam swumblow blew blown fly flew flowngrow grew grown know knew knownthrow threw thrown draw drew drawn show showed shown break broke broken choose chose chosen forget forgot forgotten freeze froze frozen speak spoke spoken wake woke woken drive drove driven eat ate eaten fall fell fallen give gave given hide hid hidden ride rode ridden rise rose risen take took taken mistake mistook mistaken write wrote written am,is was been are were been do did done go went gone lie lay lain see saw seen wear wore worn 易错型 show showed shown draw drew drawn fall fell fallen feel felt felt hold held held help helped helped think thought thought thank thanked thanked take took taken talk talked talked get got got forget forgot forgotten meet met met mean meant meant hit hit hit hide hid hidden ring rang rung bring brought brought eat ate eaten beat beat beaten lie lay lain lay laid laid find found found found founded founded buy bought bought bring brought brought learn learnt learnt hear heard heard名词复数的规则变化 一般情况 加 -s 1.清辅音后，读/s/; map-maps 2.浊辅音和元音后，读 /z/; car-cars bag-bags以s,sh,ch, x等结尾的词 加 -es 读 /iz/ bus-buses watch-watches以ce,se,ze, ge等结尾的词 加 -s 读 /iz/ license-licenses 以辅音字母+y结尾的词，变y 为i 再加es， 读 /z/ baby-babies名词复数的不规则变化 1）ch