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9.改变元音字母。(11个) meet—met—met get—got—got sit—sat—sat find—found—found hold—held—held spit—spat—spat shine—shone—shone win—won—won hang—hung—hung dig—dug—dug lose—lost—lost 10.改变辅音字母。(1个) make—made—made 11.改变元、辅音字母。(4个) leave—left—left stand—stood—stood have(has)—had—had understand—understood—understood 三、A—B—C型，即原形、过去式、过去分词都不相同。(共35个) 1.i—a—u变化。(6个) begin—began—begun drink—drank—drunk sing—sang—sung ring—rang—rung swim—swam—swum sink—sank—sunk 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。(5个) blow—blew—blown draw—drew—drawn grow—grew—grown know—knew—known throw—threw—thrown(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。(4个)(give，hide除外) drive—drove—driven write—wrote—written ride—rode—ridden rise—rose—risen (责任编辑：admin) |