一般过去时中不规则动词的过去式
写出下列单词的过去式还有规律
1,teacher______ 2,catch_________ 规律___________________
3,bring________ 4,buy____ 5,think______ 规律______________
6,lend_______ 7,send________ 8,spend______ 9,build____________
规律________________
10,sell_____ 11,tell__________ 规律__________________
12,meet_________ 13,feed_________ 规律_______________
14,grow________ 15,know_________ 16,throw________
17,fly___________ 规律____________________________