[牛津中小学英语网]动词过去式变化规则.ppt

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,动词过去式变化规则,曹永利,规则动词过去式的变化规则,1,、一般情况下，动词词尾加,-,ed,，如：,work-worked play-played want-wanted act-acted 2,、以不发音的,-e,结尾动词，动词词尾加,-d,，如：,live-lived move-moved taste-tasted hope-hoped 3,、以辅音字母,+y,结尾的动词，把,-y,变为,-i,再加,-,ed,，如：,study-studied copy-copied cry-cried carry-carried 4,、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,不规则动词的过去式,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,不规则动词的过去式的构成,1,把动词原形中的,i,改为,a,，变成过去式。如：,begin,began,，,drink,drank,，,give,gave,，,ring,rang,，,sing,sang,，,sit,sat,，,swim,swam,2,把重读开音节中的,i,改为,o,，变成过去式。如：,drive,drove,，,ride,rode,，,write,wrote,3,改动词原形中的,aw,ow,为,ew,，变成过去式。如：,draw,drew,，,grow,grew,，,know,knew,，,throw,threw,（动词,show,除外，,show,showed,）,4,动词原形中的,e,改为,o,，变成过去式。如：,get,got,，,forget,forgot,5,动词原形中的,ee,改为,e,，变成过去式。如：,feed,fed,，,meet,met,不规则动词的过去式的构成,6,动词原形中的,eep,改为,ept,，变成过去式。如：,keep,kept,，,sleep,slept,，,sweep,swept 7,动词原形中的,eak,改为,oke,，变成过去式。如：,break,broke,，,speak,spoke 8,动词原形中的,ell,改为,old,，变成过去式。如：,sell,sold,，,tell,told 9,动词原形中的,an,改为,oo,，变成过去式。如：,stand,stood,，,understand,understood 10,以,ought,和,aught,结尾，且读音是,:t,的过去式。如：,bring,brought,，,buy,bought,，,think,thought,，,catch,caught,，,teach,taught,不规则动词的过去式的构成,11,以,ould,结尾且读音为,ud,的情态动词过去式。如：,can,could,，,shall,should,，,will,would 12,把动词原形中的,o,改为,a,，变成过去式。如：,come,came,，,become,became 13,在动词原形后加,d,或,t,变成过去式，并且发生音变。如：,hearhi,heardh,:d,，,saysei,saidsed,，,meanmi:n,meantment,14,动词的过去式与动词原形一样。如：,let,let,，,must,must,，,put,put,，,read,readred,15,不符合上述规律的动词过去式。如：,am,，,is-was,，,are,were,，,build,built,，,do,did,，,eat,ate,，,fall,fell,，,feel,felt,，,find,found,，,fly,flew,，,go,went,，,have,has,had,，,hold,held,，,leave,left,，,make,made,，,may,might,，,run,ran,，,see,saw,，,take,took,