`6.` Ann asked her friend to help her make a decision.

`→`Cấu trúc asked ở dạng câu mệnh lệnh : S + asked + sb + (not) to V-inf 

`7.` The librarian told the student not to leave those books on the table,but to put them back on the shelf.

`→`Câu trần thuật dạng câu mệnh lệnh (phủ định) : S +told + O +not to-infinitive.

`8.` The nurse told the child to be a good girl and sit quietly for five minutes.

`→`Câu trần thuật dạng câu mệnh lệnh : S + told + O + to-infinitive.

`9.` My companion advised me to leave my things there.

`→`Cấu trúc : S + advise + O+to inf.

`10.` The chairman asked the participants not to discuss that question at the moment.

`→`Cấu trúc asked ở dạng câu mệnh lệnh : S + asked + sb + (not) to V-inf 

`6.`Ann asked her friend to help her make a decision.

`->` asked mệnh lệnh

S + asked + sb +to V_bare

`7.`The librarian told the student not to leave those books on the table, but to put them back on the shelf 

`->` Trần thuật thể (-)

`8. `The nurse told the child to be a good girl and sit quietly for five minutes

`->`  S + told + O + to_infinitive.

`9.` My companion advised me to leave my things there.

`->`  S + advise + O+to V_bare

`10.`The chairman asked the participants not to discuss that question at the moment.

`->` Câu 6