คำตอบ

2014-01-31T00:08:38+07:00
2014-01-31T10:13:58+07:00
Jim goes to school. (Present Sim.)
Does Jim go to school?
Yes, he does.
No, he doesn't.

Jim is going to school. (Present Con.)
Is Jim going to school?
Yes, he is.
No, he isn't.

Jim went to school. (Past Sim.)
Did Jim go to school?
Yes, he did.
No he didn't.