`1` 

`(-)` We aren't his cousins .

`(?)` Are you his cousins `?`

`2` 

`(-)` He isn't our boss .

`(?)` Is he your boss `?`

`3` 

`(-)` We aren't at home now .

`(?)` Are you at home now `?`

`4` 

`(-)` They aren't our friends .

`(?)` Are they your friends `?`

`5` 

`(-)` Her cousins aren't Hung and Thu .

`(?)` Are her counsins Hung and Thu `?`

`- - - - - - - - -`

`@` HTD :

`(+)` S + am/is/are + ... `/` S + V(s,es) + O .

`(-)` S + am/is/are + not + ... `/` S + don't/doesn't + V + O .

`(?)` Am/Is/Are + S + ... `?` `/` Do/Does + S + V + O `?`

`1)`

`( - )` We aren't his cousins

`( ? )` Are you his cousins `?`

`2)`

` ( - )` He isn't our boss

`( ? )` Is he your boss `?`

`3)`

`( - )` We aren't at home now 

`( ? )` Are you at home now `?`

`4)` 

`( - )` They aren't our friends

`( ? )` Are they your friends `?`

`5)` 

`( - )` Her cousins aren't Hung and Thu

`( ? )` Are her cousins Hung and Thu

`@` Cấu trúc HTĐ dạng tobe

`( + )` S + am/is/are + V + O

`( - )` S + am/is/are not + V + O

`( ? )` Am/is/are + S + V+ O

`#Ph`