分类：教育/科学-学习帮助
问题：六年级英语语法题把下列句子改为否定句Pleasepointtot 
把下列句子改为否定句Please point to the brdJohn must finish his homework bufore 9pm.You may go fishing on Saturday and Sunday.I come to school on foot.We made something by ourselves for Grandpa.把下列句子改为复数形式She is a German.He has a big family.把下列句子改为单数形式T把下列句子改为否定句Please point to the brdJohn must finish his homework bufore 9pm.You may go fishing on Saturday and Sunday.I come to school on foot.We made something by ourselves for Grandpa.把下列句子改为复数形式She is a German.He has a big family.把下列句子改为单数形式The children have many toys in these boxes.
回答：Please don't point to the board.
John needn't finish his homework before 9 p.m.
You may not go fishing on Sturday and Sunday.
I don't come to school on foot.
We didn't make anything by ourselves for grandpa.

They are Germans.
They have big families.

The child has a toy in the box.