七年级 单词的过去式
1个回答
1一般情况下加-ed 如 look-looked
规则变化： 1.直接加ed：work-- worked , 2.以e结尾的单词,直接加d：live --lived 3 以辅音字母+y结尾的,变y为i加ed：study studied 4以元音字母+y结尾的,直接加ed：enjoy enjoyed 5 以重读闭音节结尾的,双写最后的辅音字母+ed：stop stopped 不规则变化： have/has -- had,eat--ate,see—saw,am/is—was,are--were,go—went,do--did,take--took,run--ran,lend--lent,sleep--slept,get—got,meet—met,bring—brought,buy—bought,think—thought,say—said,give—gave,put—put,write--wrote,swim--swam,dig--dug,set--set,tell--told
基本结构
主语+动词过去式+其他 否定形式①was/were+not;②在行为动词前加didn't,同时还原行为动词 一般疑问句Did+主语+do+其他? 例句She often came to help us in those days. I didn't know you were so busy. 特殊疑问
疑问句词+did+主语+动词原形+其他
