1.am,is--was是
2.are–were 是
4.can-could能
5.will–would将要
7.catch–caught捉,抓,追
8.teach-taught教
9.think–thought想,认为
六年级下册英语不规则动词的过去式,在线求解答
1.am,is--was是
2.are–were 是
4.can-could能
5.will–would将要
7.catch–caught捉,抓,追
8.teach-taught教
9.think–thought想,认为