$\text{1. This picture is yours,isn't it?}$

$\text{2. Hoa never comes to school late,does she?}$

$\text{3. You took some photos on the beach,didn't you?}$

$\text{4. He hardly ever makes a mistake,does he?}$

$\text{5. We must communicate with you by means of e-mail or chatting, mustn’t we?}$

$\text{cấu tạo:S + V + O, trợ động từ + đại từ?}$

`1.`isn't is

`2.`does she

`3.`didn't you

`4.`does he

`5.`mustn't we 

`=>`Cấu trúc câu hỏi đuôi :

`*`Động từ thường :

+) S + V (s/es/ed), don't/ doesn't/ didn't + S ?

+) S + don't/ doesn't/ didn't + V, do/does/did + S ?

`*`Động từ khuyết thiếu :

+) S + model verb...., model verb + not + S ?

+) S + model verb + not, model verb + S ?