肯定回答：
1.Yes,I do .
2.Yes,he does.
3.Yes,we do.
4.Yes,she does.
一般疑问句：
1.Do you ask the teacher for help?
2.Does he help Tom with his English.
3.Do you like playing sports?
4.Does Lucy do her homework at school
否定句：
1.I do not ask the teacher for help.
2.He does not help Tom with his English.
3.We do not like playing sports.
4.Lucy does not do her homework at school