Unit 2 Wheres the post office?一 . 话题(Topic) Asking the way二 .重点词组(Key Phrases)1. near here 2. on Center Street 3. across from 4. next to 5. in front of 6. between and 7. behind the library 8. in the neighborhood9. post office 10. pay phone 11. go straight 12. turn left13. take a walk through the park 14. a good place to have fun15. an old hotel 16. a busy street 17. the way to my ho