改为否定句 1.My brother has dinner.2.My sister brushes her teeth.
问题描述：
改为否定句 1.My brother has dinner.2.My sister brushes her teeth.
答
my brother does not have dinner
my sister does not brush her teeth
答
1.My brother doesn't have dinner.
2.My sister doesn't brush her teeth.
第三人称单数否定要用助动词doesn't 后面跟动词原型
答
1.My brother doesn’t have dinner.
2.My sister doesn't brush her teeth
上边有个没换原型的，别选错了。do ，does加动词原形
答
My brother doesn't have dinner.
My sister doesn't brush her teeth.
答
1.My brother doesn't have dinner.
2.My sister doesn't brush her teeth.
答
.My brother doesn't have dinner
My sister doesn't brush her teeth.