minh khong nho diem ngu phap nao, nhung sau tobe la verb thi phai la to infinitive
vi du:- what i want to do now is to study hard.
- my purpose is to get high score in the final exam.
my advice = subject
is = verb
to see a doctor = object
subject + verb + object = a complete sentence
cau tra loi cua ban aroma hoi hue von, vi noi nhu ban cau nao chang co toi thieu 3 thanh phan do, nhung quan trong, sao tobe neu la verb thi fai la to-inf. than ai