don't/ wear/ a/ You/ tie/ to/ have to/ dinner party/ if/ want to./ you/ don't/ a __________________________________________________________________________ taking off/ when/ house/ a/ Its/ entering/ the Japanese/ shoes/ custom/ of __________________________________________________________________________

`1` You don't have to wear a tie to a dinner party if you don't want to.

`-` HTĐ: S + do/does + not + V-inf

`-` S + have to + V-inf: cần làm gì

`-` S + want + to V: muốn làm gì

`2` It's Japanese custom of taking off the shoes when entering a house.

`-` It's a custom of + V-ing: phong tục làm gì

`-` when + V-ing: khi làm gì

`@ N`

`1)` You don't have to wear a tie to a dinner party if you don't want to.

`->` htd: S + do/does + not + V-inf

`->` havt to + V-inf: cần làm gì?

`2)` It's Japanese custom of taking off the shoes when entering a house.

`->` custom of + V-ing: phong tục làm gì?