My mother has a knife 改为否定句

My mother has a knife 改为否定句 my mother has some letters to type改为否定句 My mother has six basketball.改为否定句. my mother has lunch at home.改为否定句 My mother is a teacher 改为否定句是什么? my mother does a lot of housework.改为否定句 My brother has a car.(改为否定句) My father has a busy day today.(改为否定句) My brother has a computer game.改为否定句 1 he comes from canada?(疑问句,肯定回答） 2 改为否定句 he has a knife My mother has to do housework every day 改为否定句怎么改?太急了! My mother likes swimming改为一般疑问句怎么改?He has some books变为否定句