Вот изменения в ваших предложениях с использованием отрицания:
Their cats like to play. -
Their cats don't like to play.My parents go to the cinema on Sunday. -
My parents don't go to the cinema on Sunday.They watch TV in the evening. -
They don't watch TV in the evening.The children feed the dog. -
The children don't feed the dog.I read a lot of books. -
I don't read a lot of books.His friends know English. -
His friends don't know English.We go shopping every Saturday. -
We don't go shopping every Saturday.People always sleep at night. -
People don't always sleep at night.Pupils listen to the teacher. -
Pupils don't listen to the teacher.