`1.` Why shouldn't I touch the knife?

`@` Why shouldn't + S + V_inf + O?

`->` tại sao ai đó không nên làm gì

`2.` Did you go to your hometown last summer?

`-` last summer `->` QKĐ

`@` QKĐ: `(?)` Did + S + V_inf + O?
`3.` What do you often fo in your free time?

`-` often `->` HTĐ

`@` HTĐ: `(?)` Do/does + S + V_inf + O?

`4.` What would you like to eat?

`-` would like + to_V : muốn làm gì

`color{red}{-uyen-}`

`@` Chuyền năng lương iu thương dzô bài làm=)

`1`. Why shouldn't I touch the knife?

`-`  Shouldn't + S + V(bare) + O : không nên

`2`. Did you go to your hometow last summer?

`-` QKĐ `(?)` Did + S + V(bare) + O?

`-` DHNB : Last summer

`3`. What do you often do in your free time?

`-` Wh_q + do/does + S + V(bare) + O?

`4`. What would you like to eat?

`-` Wh_q + would + S + like +  to V?