`1`.Keangnam Tower is shorter than Buji Kalifa Tower

`\rightarrow` So sánh hơn : S1 + be + adj-er / more adj + than + S2

`2`.In winter , Beijing is colder than Ha Noi

`\rightarrow` So sánh hơn : S1 + be + adj-er / more adj + than + S2

`3`.You musn't go to school late

`\rightarrow` S + must / mustn't + V : Tự nguyện làm điều gì đó

`4`.We must attend the meeting this weekend

`\rightarrow` S + must / mustn't + V : Tự nguyện làm điều gì đó

`5`.Ho Chi Minh City is the largest of the three cities

`\rightarrow` So sánh nhất : S + be + the adj-est / the most adj

`\text{@ Fox}`