学习目标：1熟记单词及短语
重点单词：hunger; homeless; sign; advertisement; set; establish
重点短语：clean up;；cheer up; give out; at the food bank ; help…with;; set up; come up with; put off; hand out; write down; call up; clean-up Day
2会用重点句型：1) I’d like to help homeless people.
2) You could help clean up the city parks.
3) We’re going to set up a food bank to help hungry people.
预习导航： 1.翻译下列词组：
1.把…打扫干净:________ 2. 无家可归的人:_________ 3.使高兴；振奋:_______
4.在食物储备站:_________5.想出；想到:__________ 6推迟,拖延:__________
7.写下:_________ 8.粘贴:_________ 9.分发:_________ 10.建立:____________
