English grammar rules Active passive voice

Simple present tense

Active voice	Passive voice
"He,she ,it and singular=1stform + s/es"	"Is,am,are+3rd form of verb is used (past participle)"
"I,we,you,they and plural=1st from of the verb"	"He,she,it,singular=is i=am"
"I write a letter." I/subject write/verb a letter/object.	"You,we,they,plural=are" "A letter is written by me."
"He writes a letter." He=subject writes=verb a letter=object	"A letter is written by him."
"She writes letters." She=subject writes=verb letters=object	"Leters are written by her."
"The teacher punishes me." "The teacher=subject punishes=verb me=object."	"I am punished by the teacher."