按要求转换句型。
1．My father doesn't like playing tennis. (变为肯定句)
________________________________________________________________________
2．I think tennis is very interesting. (就划线部分提问)
________________________________________________________________________
3．Tim has a gold watch. (变为一般疑问句)
________________________________________________________________________
4．I play sports every morning. (变为否定句)
________________________________________________________________________
5．There are old bikes under the tree. (变为单数句)
________________________________________________________________________
和
，电势分别为
和
，则 
，
，
，
，
