Question

there+is+a+rabbit+near+the+house改为肯定句？

Answer 1

there is a rabbit near the house。/ 房子附近有一只兔子。
这句话本身就是肯定句。如果改成疑问句，则：
Is there a rabbit near the house?/ 房子附近有一只兔子吗？

Answer 2

There is a rabbit near the house.

就是肯定句

否定句是

There isn't a rabbit near the house.

一般疑问句是

Is there a rabbit near the house?

Answer 3

肯定句改为否定句，在 be 动词 is 后加 not 就行。

否定句为：There isn't a rabbit near the house. 

房子附近没有兔子。

（isn't 是 is not 的缩写）

Answer 4

There is a rabbit near the house.