`1.` What do you do when you have a fever ?

`-` What + do/ does + S + do + when + O ?

`2.` Does she have a pain in her throat ?

`-` Do/ Does + S + V1 + O ?

`3.` Why does he have a stomach ache ?

`-` Why do/ does + S + V1 + O ?

`4.` What should we do when we have a pain in our back ?

`-` What should + S + do/ does + when + O ?

`5.` She shouldn't play any sports because she has a backache for three days.

`-` S + should/ shouldn't + v1 + because + clause..

`1)` What do you do when you have a fever?

`-` Cấu trúc: What + do/ does + S + do + ......?

`2)`  Does she have a pain in her throat ?

`-` Cấu trúc: Do/ does + S + V + O?

`3)` Why does he have a stomach ache ?

`-`Cấu trúc:  Why + do/ does + S + have/ has + V + O?

`4)`  What should we do when we have a pain in our back ?

`-`Cấu trúc:  What sould + S + do + when + O?

`5)`  She shouldn't play any sports because she has a backache for three days.

`-` Cấu trúc: S + should/ should't + V + beacause + ...... 

`#Ph`