1. Meals is cooked by my sister evry day.

2. The floor was cleaned by my mother yesterday.

3. Ten emails has written by my friend for 2 hours.

4. Painting our house is by my father

5. Some food was being bought by my sister at 11 a.m yesterday.

Công thức: 

I. The present simple passive: ( thì hiện tại đơn bị động)

(+) S + be (am/is/are) + past participle

(-) S + be(am/is/are) not + past participle

(?) Be + (am/is/are) + S + past participle

2. Past simple passive: (quá khứ đơn bị động)

(+) S + be(was/were) +past participle 

(-) S + be(was/were) + S + past participle 

(?) Be + (was/were) +  S + past participle 

~ XIN CTLHN Ạ ~

Rewrite the sentence

Công thức chung câu bị động

-> S + be + V3

1. Meals are cooked by my sister every day.

-> Everyday: thì HTD; meals là N số nhiều -> are

2. The floor was cleaned by my mother yesterday.

-> yesterday: dấu hiệu thì QKD -> was

3. Ten emails have been written for two hours by my friend.

-> for + khoảng tg: thì HTHT, 10 emails: N số nhiều -> have been

4. Our house is being painted by my father.

-> bị động thì HTTD 

5. Some food was being bought by my sister at 11 a.m yesterday.

-> at 11am yesterday -> thì QKTD