`1.` You should talk to your parents about your problem.

`->` should do sth: nên làm gì

`2.` You ought to study hard to pass the exam.

`->` ought to do sth: nên làm gì

`3.` We should learn vocabulary every day.

`4.` You should tell the truth to your family.

`5.` I needn't to wear uniform everyday.

`->` It + tobe + necessary + (for sb) + to V 

`=` S + need to + V-bare: ai đó cần làm gì

`6.` We mustn't drive without wearing a helmet.

`->` be not allowed to do st `=` mustn't do sth: không được phép làm gì

`7.` Young people need to plan their future career carefully.

`8.` You must pay attention to the content of the lesson.

`->` It + tobe + important + (for sb) + to V

`=` S + must + V-bare: ai đó cần phải làm gì

`1.` You should talk to your parents about your problem.

`=>` It is (not) better (+ for sb) + to V = S + should (not) + V(bare): ai đó (không) nên làm gì

`2.` You should study hard to pass the exam.

`=>` S + should (not) + V(bare): ai đó (không) nên làm gì

`3.` We should learn vocabulary every day.

`=>` It is (not) a good idea (+ for sb) + to V = S + should (not) + V(bare): ai đó (không) nên làm gì

`4.` You should tell the truth to your family.

`=>` S + should (not) + V(bare): ai đó (không) nên làm gì

`5.` I don't need to wear uniform everyday.

`=>` It's not necessary (+ for sb) + to V = S + don't/doesn't + need to/ have to + V(bare): ai đó không cần/ phải làm gì

`6.` We must not drive without wearing a helmet.

`=>` S + be (not) + allowed + to V = S + must (not) + V(bare): ai đó (không) cần phải làm gì

`7.` Young people need to plan their future career carefully.

`=>` It's necessary (+ for sb) + to V = S + need to/ have to + V(bare): ai đó cần/ phải làm gì

`8.` You must pay attention to the content of the lesson.

`=>` It is (not) very important + to V = S + must (not) + V(bare): ai đó (không) cần phải làm gì