精选优质文档-倾情为你奉上六上Unit7 Protect the Earth 讲义A词组：protect the Earth保护地球save water节约用水drink water喝水use water to clean things用水清洗东西every day每天in many places在许多地方much water许多水waste water浪费水save energy节能come from=be from来自. on Earth在地球上drive so much开如此多的车a lot of energy许多能源save trees拯救树木make tables做桌子many other things其他的许多物品cut down砍伐too many+可数名词too much+不可数名数help keep帮助保持be bad for对.有害（反）be good for对.有益plastic bags塑料袋glass bottles玻璃瓶；Earth Day地球日World Environment世界环境日（do a project做课题all s
