Question

My parents have presented me a good thing passive voice

Answer 1

A good thing has been presented to me by my parents.

Answer 2

Answer:

I have been presented a good thing by my parents.

or

A good thing to me has been presented by my parents.

Explanation:

When we change voice of a sentence, we have to change the active voice verb into passive voice verb or vice versa.  

It is a present perfect tense.  

The active and passive voice tense forms in this tense are as follows:

Present perfect active = S+has/have + V3 +O

Present perfect passive = O+has/have + been + V3 +by+S