动词的三种变化规则(共8页).doc

精选优质文档-倾情为你奉上 动词的三种变化规则1、单数形（a）原形动词词尾+“-s”：help（帮助）helpscome（来）comes（b）原形动词词尾“ch，sh，o，s，x”+“-es”：teach（教）teacheswash（洗）washesgo（去）goeskiss（吻）kissesfix（安装）fixes（c）原形动词词尾为“+y”时，去“y”后加“-ies”，若是“+y”，只加“-s”：study（学习）studiesplay（游戏）plays 注：本项规则的“第三人称单数”是指句子的主语。例如：I go to school on a bicycle every day .You go to school on a bicycle every day.She goes to school on a bicycle every day.