ACTIVE AND PASSIVE VOICE
PAST PERFECT
ACTIVE ⇾ S + had + 3rV/ed + O
PASSIVE ⇾ S + had + been + 3rV/ed (+by + Sb + O)
Ex: I had done all of my homework.
Ex: All of my homework had been done by me.
PAST CONTINUOUS
FUTURE SIMPLE
SIMPLE PAST
ACTIVE ⇾ S + V-ed + O
PASSIVE ⇾ S + was/were + 3rV (+by Sb/O)
PASSIVE ⇾ S + was/were + being + V+ing (by Sb/O)
ACTIVE ⇾ S + was/were + V+ing + O
Ex: She was cutting the grass
Ex: The grass was being cutting by her.
Ex: She played the piano yesterday.
Ex: The piano was played yesterday by her.
ACTIVE ⇾ S + will + V + O
PASSIVE ⇾ S + Will be + 3rV/ed (+by Sb/O)
Ex: I will feed the dogs.
Ex: The dogs will be fed by me.
MODAL VERB
S + Modal verb + be + 3rV/ed (+by Sb/O)
(can, could, should, might, must
Ex: Children should not eat too much fast food.
⇾ Fast food should not be eaten too much by children.
FUTURE PERFECT
ACTIVE ⇾ S + will + have + 3rV/ed + O
PASSIVE ⇾ S + will + have been + 3rV/ed (by Sb/O)
Ex: I will have visited Ho Chi Minh City next moth.
Ex: Ho Chi Minh City will have been visited next moth by me.
PAST FUTURE
ACTIVE ⇾ S + would + VI (intransitive verb) + O
PASSIVE ⇾ S + would + be + 3rV/ed (+by Sb/O
Ex: The letter would be sent by her.
Ex: She would send the letter.
PRESENT PERFECT
PASSIVE ⇾ S + have/has + been + 3rV/ed (+by Sb/O
ACTIVE ⇾ S + have/has + 3rV7ed + O
Ex: This house has been built 3 years by them.
Ex: They have built this house for 3 years.
PRESENT CONTINUOUS
ACTIVE ⇾ S + is/am/are + V-ing + O
PASSIVE ⇾ S + is/am/are + being + V-ing (+by Sb/O)
Ex: She is drawing a picture.
Ex: A pictures is being drawing.
SIMPLE PRESENT
ACTIVA ⇾ S + V + O
PASSIVE ⇾ S + be + 3rV/ed + (by Sb/O)
Ex: Dishes are often washed by my mother.
Ex: My mother often washes dishes.