Intransitive verb can be used as Transitive verb.
The horse walks.
The verb /walks/ is in Intransitive verb. But when the verb is used in a Causative sense, it becomes transitive.
He walks the horse.
Study this follows!
1.The birds fly.
2.The boys flies their kites.
A few verbs in common use are distinguished as Transitive or Intransitive by their spelling, the Transitive being causative forms of the corresponding Intransitive verbs.
Besides, some intransitive verbs may become Transitive by having Preposition added to them.
All his friends laughed at him.
He will soon run through his forture.
I wish for nothing more.
Sometimes the preposition is prefixed to the verb.
He bravely withstood the attack.
Intransitive verbs sometimes take after them an Object similar in meaning to the verb. This type is called Cognate Accusative or Cognate Object.
I dreamt a strange dream.
The noun used as a Cognate Object is in the Accusative Case. The following are examples of partially Cognate Object....
The children shouted applause.
The children shouted a shout of applause.
A noun used adverbially to modify a verb, an adjective, or an adverb denoting time, place, distance, weight, value, etc. is called Adverbial Object or Adverbial Accusative, and is said to be in the Accusative Case adverbially.
I can't wait a moment longer.
Further, there are a few transitive verbs which are sometimes used as Intransitive verbs.