1. In bad weather I go to school by bus.
2. I always go to my grandparents' house on foot.
3. I usually cycle to school.
4. Do you walk to school?
5. My father usually drives to work.
`=>` Tổng quát:
1. go | by bus
2. go - on foot
3. cycle
4. walk
5. drives
`=>` Công thức:
(+) S + V(e/es) ...
(-) S + don't/doesn't + V(infi) ... ?
(?) Do/Does + S + V(infi) ... ?