Pattern 8 : N1 TrV N2 N3

" The mother bought the girl a dress"
In pattern 8 there are some  matter to be observed :

1. The supercripts 1,2,3 indicate that each nouns has different referent : mother, girl and dress are three separate entities.
2. We see two grammatical objects after the verb bought. These two onjects are called, in order, the indirect and the direct object. If we omit the firs one the pattern becomes number 7 and dress is seen to bedirect object.
3. The indirect object may often be replaced by a prepositional phrase beginning with to or for, or occasionally with different preposition. examples : he sold the student a ticket ; he sold a ticket to the student ; He built them a playpen; he built a playpen for them.
4. The verbs that can be used in pattern 8 are in restricted group. some of the common ones are give, make, find, tell, buy, write, send, ask, play, build, teach, assign, feed, offer, throw, hand, pass, sell, pay.
5. A pattern 8 sentence may be transformed into the passive by making either the direct or the indirect object the subject of the passive verb. ex ; A dress was bought the girl by her mother: the girl was bought a dress by her mother
6. The grammatical meaning of the indirect object is beneficiary of the action of the verb-plus-direct object.