a lot happier的用法和样例：
- Flora was a lot happier after she overcame her fear of meeting new people.
- I struggled a little bit at the beginning with the brakes but since we have changed it at Silverstone I am a lot happier with it.
- He got a lot of dope from the secretary.
- I felt a lot happi er .
- He has a lot of clout with the board of directors.
- He has got a lot of mileage out of the shoes.