`-` BĐ `-` HTĐ :

`=>` S + is / am / are + VpII ( by O )

`*` I `+` am

`*` He , She , It `+` is

`*` You , We , They `+` are

`1`.This book is read by Mary every night

`2`.English is spoken around the world

`3`.The answer is known by Tom

`4`.This TV is used after `7` PM

`5`.Dinner is cooked by my mom everyday

`6`.An essay is written

`7`.Some flowers are planted on the garden

`8`.English is taught to us by Ms Ha

`\text{# TF}`

`1,` Mary read this book every night.

`->` This book is read by Mary every night.

`2,` People speak English around the world.

`->` English is spoken around the world.

`3,` Tom knows the answer.

`->` The answer known by Tom.

`4,` We use this TV after 7 pm.

`->` This TV is used after 7pm.

`5,` My mom cooks dinner everyday.

`->` Dinner is cooked by my mom everyday.

`6,` They write an essay.

`->` An essay is written.

`7,` We plant some flowers on the garden.

`->` Some plants are planted on the garden.

`8,` Ms Ha teaches us Englisgh.

`->` English is taught by Ms Ha.

S+ am/is/are+ `P_(II)` + (by O)

by + they/people/every one/.... (các danh từ số nhều có ý nghĩa chung chung) thì ta có thểể lược bỏ