【正文】
Lesson 58 Stop pollution Learning aims : the new words : less,least ,environment,throw away ,reusable ,waste,fix,toilet ,take out . : leak ,leaky,litre, Sink,tap ,recycle ,save pollute to do the things we can do everyday to save our environment . Compare : big bigger biggest small smaller smallest little less least He has a little money . She has less money than he . I have the least money of all. He has twenty yuan . She has two yuan . I have two jiao . a leaking tap