Here's why:
* Transitive verbs are verbs that require a direct object to complete their meaning. They "transfer" the action of the verb to something or someone.
* Example: *The chef cooked the meal.* ("cooked" is transitive, and "meal" is the direct object)
* Intransitive verbs are verbs that do not require a direct object. They express a complete thought on their own.
* Example: *The baby slept.* ("slept" is intransitive)
Indirect objects are recipients of the direct object. They are only used with transitive verbs that have a direct object.
* Example: *The chef gave the customer a delicious meal.* ("gave" is transitive, "meal" is the direct object, and "customer" is the indirect object)
In summary:
* Direct objects are required by transitive verbs.
* Indirect objects are optional and are used with transitive verbs that have a direct object.