1. He go to play ground in this morning
-> He goes to playground in this morning ( thiếu es vì là she/he/it )
2. Where is she goes now?
- Where is she going now ? ( chỉ một hành động đang diễn ra, phải có V_ing )
3. What are your address?
- What is your address ? ( thay are = is vì là your )