`11.`Books are read by the students in the library.

`12.`Ha Long Bay is visited by thousands of visitors every year.

`13.`A letter is written by William.

`14.`Sports are played after school.

`15.`Films are watched by my parents every night.

`16.`Lan's clothes are often washed by her.

`17.`Tea is drunk by English people in the afternoon.

`18.`English new words are written every day.

`19.`Her teeth are brushed after meals.

`20.`My dog is taken care of.

`=>`Câu bị động với thì hiện tại đơn :

`(+)` Câu khẳng định : S + am/is/are + S + Vpp + (by O)

`(-)` Câu phủ định : S + am/is/are not + S + Vpp + (by O)

`(?)` Câu hỏi nghi vấn : Am/Is/Are + S + Vpp + (by O) ?

$\Longrightarrow$ Câu bị động của thì hiện tại đơn :
(+) Thể khẳng định : S + am/is/are + S + Vpp + (by O).
(-)  Thể phủ định : S + am/is/are not + S + Vpp + (by O).
(?)  Thể nghi vấn : Am/Is/Are + S + Vpp + (by O) ?

$\overline{ÁP DỤNG}$

11. The students read books in the library.
$\longrightarrow$ Books are read by the students in the library.
12. Thousands of visitors visit Ha Long Bay every year.
$\longrightarrow$ Ha Long Bay is visited by thousands of visitors every year.
13. William writes a letter. 
$\longrightarrow$ A letter is written by William.
14. They play sports after school.
$\longrightarrow$ Sports are played after school.
15. My parents watch films every night. 
$\longrightarrow$ Films are watched by my parents every night.
16. Lan often washes her clothes.
$\longrightarrow$ Lan's clothes are often washed by her.
17. English people drink tea in the afternoon.
$\longrightarrow$ Tea is drunk by English people in the afternoon.
18. I write English new words every day.
$\longrightarrow$ English new words are written every day.
19. She brushes her teeth after meals.
$\longrightarrow$ Her teeth are brushed after meals.
20. I take care of my dog.
$\longrightarrow$ My dog is taken care of.

$\text{MR.HUY.}$