Question

what are active and passive voice ?

Answer 1

they are types of voices
we tell by our own to others is active voice
it has punctuation marks
passive voice is what we told that will be told by other to others
it doesn't have punctuation marks
hope this helps you quickly

Answer 2

Voice is a form of verb showing whether subject acts or has acted to it that is sentences are in either active or passive voice.
Definition 

This is defined as-

Active voice is a sentence in which verb shows that subject does an action. 

Pattern of sentence

Pattern of sentence in this voice is-

Subject+ Verb+ Object

Example with explanation

Here are some example with explanation –

My son has built a website.

In above sentence, we have a subject(my son), a verb (has built) and the object of the verb

Passive voice

In passive voice, action is done.

Definition 

This form is defined as-

Passive voice is the sentence in which the form of verb shows that an action is done to the subject.

A website has been built by my son.

In above sentence, we have-

direct object of the verb (a website)the verb is in passive form (has been built)Subject is missing but we can add ‘by’ and make the subject clear.