Yes.
Haven't is short for 'have not.'
Example: "They haven't done their homework. Again!"
Haven't is listed in dictionaries. It is called a contraction.
(For example, won't is a contraction of will not)
See Related links below.
hasnt
The noun 'is' is a verb, a form of the verb 'to be'. The verb 'is' functions as an auxiliary verb and a linking verb.
It is an action verb.
It is a Linking Verb. The word are is a conjugation of the verb "to be."
The verb 'is' is a form of the verb 'to be', a being verb as opposed to an action verb. The verb 'is' also functions as an auxiliary (helper) verb. The verb 'is' also functions as a linking verb.
Hasn't is actually an adjective (describing word) because it describes what someone has done eg: she hasn't done her work.
it hasnt
hasnt
He hasnt.
he hasnt
it hasnt
he hasnt
it hasnt
No he hasnt.
she hasnt yet ;)
it hasnt
no she hasnt