Question

I saw only mango tree make negative sentences

Answer 1

Answer:

I didnot see only mango tree

Explanation:

as it is in simple past we will use didnt

formation:sub+did+not +verb 1st form+obj

we will change 2nd form of verb into 1st form as we will use did

Answer 2

Answer:

I saw no other than mango tree.

or

I did not see only mango tree.