Viết các câu sau ở thể khẳng định (+), thể phủ định (-), thể nghi vấn (?) ở thì hiện tại hoàn thành.
1. (+) I have finished my homework.
(-) ________________________________________________________________.
(?) ________________________________________________________________?
2. (+) ________________________________________________________________.
(-) My uncle hasn’t been to Singapore before.
(?) ________________________________________________________________?
3. (+) ________________________________________________________________.
(-) ________________________________________________________________.
(?) Have they found their keys?
4. (+) Jim has just played video games with his brother.
(-) ________________________________________________________________.
(?) ________________________________________________________________?
1. (+) I have finished my homework.
(-) _________I have not finished my homework._______________________________________________________.
(?) _____Have you finished your homework___________________________________________________________?
2. (+) ____My uncle has been to Singapore before____________________________________________________________.
(-) My uncle hasn’t been to Singapore before.
(?) ____Has your uncle been to Singapore before____________________________________________________________?
3. (+) ___They have not found their keys_____________________________________________________________.
(-) ________They have not found their keys________________________________________________________.
(?) Have they found their keys?
4. (+) Jim has just played video games with his brother.
(-) _______Jim has not played video games with his brother_________________________________________________________.
(?) _______Has Jim plaed video games with his brother_________________________________________________________?
