sharpen,boil,turn,ask,wash,paint,dust,answer,type,walk过去式和过去分词
问题描述：
sharpen,boil,turn,ask,wash,paint,dust,answer,type,walk过去式和过去分词
答
除了 type 只需加 d 之外，所有其他的都是加 ed - 过去式和过去分词都一样。
答
过去式： sharpened , boiled , turned , asked , washed , painted , dusted , answered, typed , walked
过去分词： sharpened, boiled, turned, asked, washed, painted, dusted, answered, typed, walked
答
sharpen-sharpened-sharpenedboil-boiled-boiledturn-turned-turnedask-asked-askedwash-washed-washedpaint-pained-paineddust-dusted-dustedanswer-answered-answeredtype-typed-typedwalk=walked-walked