`1.` aren't 

`2.` Are Lan's brothers doctors?

`3.` is

`4.` aren't 

`-` Với tobe

`( + )` S (I) + am + N/adj/... + O

S (số ít + He,she,it) + is + N/adj/... + O

S (số nhiều + I, you, we, they) + are + N/adj;... + O

`( - )` S (I) + am not + N/adj/... + O

S (số ít + He,she,it) + isn't + N/adj/... + O

S (số nhiều + I, you, we, they) + aren't + N/adj;... + O

`( ? )` Am + S (I) + N/adj/... + O?

Is + S (số ít + He,she,it) + N/adj/... + O?

Are + S (số nhiều + I, you, we, they) + N/adj/... + O?

$1.$ aren't

$2.$ Are Lan's brothers

$3.$ is 

$4$ aren't

.......................................................

Cấu trúc:

- Thì HTĐ:

+ ĐT thường:

(+) S + V(e/es) + O

(-) S + don't/doesn't + V + O

(?) Do/Does + S + O?

+ To be: 

(+) S + be (am/is/are) + O

(-) S + be not + O

(?) Be + S + O?

$\text{maingoctranthi}$