The teacher could say, "The teacher called John and told John to bring the teacher John's book;" but such an expression would not be good English.
It would be better for the teacher to say, "I called John and told him to bring me his book."
Here the words I and me are used instead of teacher, and the words him and his are used instead of John and John's. Such words as I, me, him and his are called pronouns.
A pronoun is a word used instead of a noun.
A pronoun is a part of speech.
Point out the pronouns in each of the following sentences:
1. William, I will lend you my book.
2. Thou shalt not bear false witness against thy neighbor.
3. I saw him remove his coat.
4. The man brought me some of his fresh berries.
5. They called to see us in the morning.
6. Hail to thee, blithe spirit, Bird thou never wert.
7. Nor you, ye proud, impute to these the fault.
8. I that speak to thee am he.
9. Jura answers, through her misty shroud, Back to the joyous Alps, who call to her aloud.
10, They are poor
That have lost nothing; they are poorer far Who, losing, have forgotten; they are poorest Of all who lose and wish they might forget
Write five sentences using pronouns instead of nouns, and tell what the nouns are, whose places the pronouns take.