将下列肯定句改为否定句。
1、You are at home now.
2、He is going to visit the farm next Friday.
3、There was an old swing in the park last year.
4、There were some knives in the basket.
5、The rabbits are next to the apple tree now.
6、The boy in black likes music.
7、We usually have four lessons in the morning.
8、I will teach you English.
9、Mr White lives and works in New York.
10、Her house is far from the school.