Ex-10. Em hãy chuyển những câu sau sang câu phủ định và câu nghi vấn. VD: (+) Nam is a student in my class. (-)Nam is not/ isnt a student in my class. (?) Is Nam a student in your class? 1. He is eleven years old. //... 2. She is a doctor. //... 3. They are students in Tu Yen secondary school. //... 4. Nam is my brother. //... 5. Hoa is my sister. //... 6. There s one door in my class. //... 7. There are twenty seven students in my class. //... 8. Her name is Linh. //... 9. Im an engineer. //... 10. Those are his pens. //... 11. My father is doctor. //... 12. This is Lans pen. //......................................................

Đáp án + Giải thích các bước giải:

`1.` He is eleven years old.

`(-)` He isn't eleven years old.

`(?)` Is he eleven years old`?`

`2.` She is a doctor.

`(-)` She isn't a doctor.

`(?)` Is she a doctor`?`

`3.` They are students in Tu Yen secondary school.

`(-)` They aren't students in Tu Yen secondary school.

`(?)` Are they students in Tu Yen secondary school`?`

`4.` Nam is my brother.

`(-)` Nam isn't my brother.

`(?)` Is Nam your brother`?`

`5.` Hoa is my sister.

`(-)` Hoa isn't my sister.

`(?)` Is Hoa your sister`?`

`6.` There is one door in my class.

`(-)` There aren't any doors in my class.

`(?)` Are there any doors in your class`?`

`7.` There are twenty seven students in my class.

`(-)` There aren't twenty seven students in my class.

`(?)` Are there twenty seven students in your class?

`8.` Her name is Linh.

`(-)` Her name isn't Linh.

`(?)` Is her name Linh`?` 

`9.` I'm an engineer.

`(-)` I am not an engineer.

`(?)` Are you an engineer`?`

`10.` Those are his pens.

`(-)` Those aren't his pens.

`(?)` Are those his pens`?`

`11.` My father is a doctor.

`(-)` My father isn't a doctor.

`(?)` Is your father a doctor`?`

`12.` This is Lan's pen.

`(-)` This isn't Lan's pen.

`(?)` Is this Lan's pen`?`

* Note:

`-` Khẳng định: am, is, are.

`-` Phủ định: am not, isn't (is not), aren't (are not).

`-` Sở hữu: S + 's + noun.

`-` There + be + noun.

`-` S + be + a/an/the + job.

`-` Hiện tại đơn - động từ tobe:

`(+)` S + be + adj/ noun/ PP.

`(-)` S + be + not + adj/ noun/ PP.

`(?)` Be (not)/ S + adj/ noun/ PP.