Chuyển sang câu phủ định và nghi vấn
1. My father often watch tv after dinner
=> My father doesn't often watch tv after dinner
     Does my father often watch tv after dinner?
2. Hoa has to write this lesson 20 times
=> Hoa doesn't have to write this lesson 20 times
     Does Hoa have to write this lesson 20 times?
3. Children always play football after school
=> Children doesn't always play football after school
     Does children always play football after school?
 

1.My father not often watch TV after dinner
Does your father often watch TV after dinner ?
2. Hoa don't write this lesson to  20 times
Does Hoa write this lesson to 20 time ?
3.Children not alway play football after school
Do children alway play football after school ?