B4 Unit 2 Working the land语言点
编稿：张桂琴 审稿：梁晓
目标认知
重点词汇
struggle，expand，check，enough，compare，provide，confuse，damage，affect，reduce，method，avoid，every
重点短语
thanks to，rid sb./ sth. of sb. /sth.，care about，would rather，too much，lead to，build up，in addition，turn to，focus on，keep...free from
重点句型
so that可以引导目的状语从句
even though
have been doing
as用法小结
知识讲解
重点词汇
