`-` Thì HTĐ ( NV ) :

`=>` Do / Does + S + V ?

`=>` `DHNB` : always , often , usually , ...

`1`.How often does she have Maths ?

`->` How often dùng để hỏi về mức độ thường xuyên

`2`.What time does it always start every day ?

`->` What time dùng để hỏi về giờ

`\text{# TF}`

She has maths 6 times a week.

$\Rightarrow$ How often does she have Maths$?$

- How often: Bao lâu 

- Cấu trúc: How often + trợ ĐT + S + V....

 It always starts at 7pm everyday.

$\Rightarrow$ What time does it always start everyday$?$

- What time: mấy giờ

-Cấu trúc:  What time do / does + S + V? 

$\text{maingoctranthi}$