过去分词变化规则ppt课件.ppt

动词变形,现在分词,过去分词的用法,表示动作的完成或者被动,过去分词的不规则变化,一.AAA型（动词原形、过去式、过去分词同形）,cost（花费）cost-cost cut（割）-cut-cut hit（打）-hit- hit hurt 伤害）-hurt- hurt let（让）-let -let put（放）-put -put read （读）-read- read,二.AAB型（动词原形与过去式同形）,beat（跳动）-beat- beaten,三.ABA型（动词原形与过去分词同形）,become（变成）-becamebecome come（来）-came -come run（跑）-ran -run,1.过去式和过去分词都含有 -ought。bringbroughtbrought buyboughtbought thinkthoughtthought,四.ABB型（过去式与过去分词同形）,2.词尾有-ild，-end时，只需把d变为t。 buildbuiltbuilt lendlent lent sendsentsent spendspent spent 3过去式、过去分词都含有 -aught。 catchcaughtcaught teachtaughttaught,4把-eep变为-ept。 keepkeptkept sleepsleptslept sweep sweptswept 5.把-ell变为-old。 telltoldtold sellsoldsold,6过去式、过去分词都含有-elt或-ilt。 smellsmeltsmelt spellspeltspelt feelfelt felt spillspiltspilt 7过去式、过去分词都在原形词尾加t。learnlearntlearnt meanmeantmeant spoilspoiltspoilt,8过去式、过去分词词尾去y变-id saysaidsaid paypaidpaid laylaidlaid hearheardheard9改变辅音字母。makemademade,10改变元音字母。meetmetmet getgotgot sitsatsat findfoundfound holdheldheld spitspatspat shineshoneshone winwonwon hanghunghung dig dugdug loselostlost,11.改变元、辅音字母。 leaveleftleft standstoodstood have（has） hadhad understandunderstoodunderstood,五.ABC型（动词原形、过去式与过去分词三者不同形）,1.iau变化。 beginbeganbegun drinkdrankdrunk sing sangsung ringrangrung swimswamswum sink sanksunk,2.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。 blowblewblown drawdrewdrawn grow grewgrown knowknewknown throwthrewthrown（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） drivedrovedriven writewrotewritten ride roderidden riseroserisen,4.过去分词在过去式后加（e）n。 breakbrokebroken choosechosechosen freezefrozefrozen speakspokespoken wakewoke woken,5.过去分词由过去式加-ten构成。 forgetforgotforgotten 6.过去分词由原形加（e）n构成。bewas（were）been eatateeaten fallfellfallen givegavegiven seesawseen hidehidhidden（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。taketooktaken mistakemistookmistaken 8.原形、过去式和过去分词都不相同。 dodiddone flyflewflown gowentgone lielaylain showshowedshown wearworeworn,