YOU SAID:

the boy was not polite so i had to dismiss him from my presence

INTO JAPANESE

その少年は礼儀正しくなかったので、私は私の存在から彼を解雇しなければならなかった

BACK INTO ENGLISH

The boy was not polite, so I had to dismiss him from my presence

INTO JAPANESE

その少年は丁寧ではなかったので、私は私の存在から彼を解雇しなければならなかった

BACK INTO ENGLISH

The boy was not polite, so I had to dismiss him from my presence