1- Pđ: You should not tell your father about this problem.
-Nv: Should you tell your father about this problem?
2-Pđ: We were not at the seaside last sunday.
-Nv: 2 Were you at the seaside last sunday?
3-Pđ: Mai's brother can not play the violin.
-Nv: Can Mai's brother play the violin?
4-Pđ: Nam didn't celebrate his 14th birthday yesterday.
-Nv: Did Nam celebrate his 14th birthday yesterday?
5-Pđ: They won't go on a camping trip next week.
-Nv: Will they go on a camping trip next week?
1 You should tell your father about this problem
(-) You shouldn't tell your father about this problem.
(?) Should I tell my father about this problem ?
2 We were at the seaside last sunday
(-) We weren't at the seaside last Sunday.
(?) Were you at the seaside last Sunday?
3 Mai's brother can play the violin
(-) Mai's brother can't play the violin.
(?) Can Mai's brother play violin?
4 Nam celebrated his 14th birthday yesterday
(-) Nam didn't celebrate his 14th birthday yesterday.
(?) Dia Nam celebrate his 14th birthday yesterday?
5 They will go on a camping trip next week
(-) They won't go on camping trip next week.
(?) Will they go on camping trip next week?
