jim and tom are brother 变否定句

题目

jim and tom are brother 变否定句
帮我讲讲这类题,
顺便在问几道
it is an orange 对an orange提问
my father is fine 对fine提问
he is 13（变负数）

答案

加个sJim and Tom are brothers吉姆和汤姆是兄弟Jim and Tom is not a brother---------------------------is动词 (用于第三人称单数现在时)是(与-连用构成现在进行时;与-连用构成被动语态 are 动词 (用于第二人称单...