3. from ⇒ in ( Spain : đất nước dùng "in" )
4. has studied for 3 years tourism ⇒ has studied tourism for 3 years. ( study + môn học/ ngành )
5. with twenty three years ⇒ twenty three years ago ( finished nên dùng quá khứ đơn -> ago )
6. since ⇒ for ( five years là khoảng thời gian )
7. have you been ⇒ were you ( last year: quá khứ đơn )
8. boring ⇒ bored ( mang nghãi bị động, tính từ thêm -ed )
9. do you know ⇒ have you known ( how long: hiện tai hoàn thành )
10. not have ⇒ have not ( has/have + not + Vpp )
