动词时态词的变化规律VIP专享VIP免费

动词在不同时态中的变化一、单数第三人称:动词词尾加s的方法与名词复数词尾的加法一样：1、一般情况下加s:如helps;makes等。2、以ch,sh,s,x,o结尾的词加es:如watches;washes;guesses;fixes;goes等。3、以“辅音字母+y”结尾的词变y为i再加es。如flies;tries等。4、特殊变化：be---is\was;have---has;do--does二、现在分词:多数动词词尾直接加ing1、动词以辅音字母加e结尾时，去掉e再加-ing。如make---makingtake---takingwrite---writing等。2、动词以重读闭音节结尾，双写最后一个辅音字母再加-ing。如sit---sittingstop---stoppingrun---running等。三、动词过去时的构成：多数动词后直接加ed1、以不发音的e结尾，直接加d:dance—danced,lived,hoped,used２、以“辅音字母+y”结尾的词变y为i再加ed:study—studiedcarry—carriedworry—worried3、动词以重读闭音节结尾，双写最后一个辅音字母再加edstop—stoppedplan—plannedtrip—tripped4、许多不规则动词：am,is—wasare—werehave—haddo—didgo—wentcome—camesay—saiddraw—drewread—readfly—flewmay—mightswim—swamsing—sangeat—atetake—tookbuy—boughtsee—sawleave—leftget—gotwin—won词型转换一、缩写词：1.isnot=isn’tarenot=aren’tdonot=don’tdoesnot=doesn’tdidnot=didn’tletus=let’swhois=who’stheyare=they’reIwould=I’dcannot=can’tIwill=I’llwewill=we’ll2.星期和月份缩写时保留前三个字母，但September=Sept3.序数词的变化：数字加最后两个字母：first=1st4.长度单位（unitsoflength）km=kilometerm=metercm=centimetermm=millimeterft=foot\feet5．重量单位（unitofweight）tn\t=tonkg=kilogramg=gram二、同音词：no—knowhear—herewhere—wearby—buypear—pairtheir—therehigh—hi三、近义词：tonight—thiseveningfind—lookforill—sick四、反义词：tall—shortlong—shortold—youngheavy—lightfat—thinbig—smallhappy—sadgood—badgo—stopright—leftnorth—southeast—westactor—actressgeton—getoffgetup—gotobedup—downstand—sitcheap—expensivehot--coldputon—takeoffblack—whiteopen—closecool—warmon—underinfrontof—behindquiet—activestrict—kind四、动词变名词：sing—singerwrite—writeract—actorart—artistclean—cleanerdance—dancerdrive—driverteach—teacher五、名词变形容词：China—Chineserain—rainycloud—cloudysnow—snowysun—sunnycolour—colourful六、形容词变副词：heavy—heavily七、以下动词的过去式尽量背会：tell—toldrun—ransay—saidsit—satcome—camelose—lostwear—woreforget—forgotsleep—sleptwake—wokestand—stoodgive—gavewrite—wrotemake--made