不重复讲教育理论，而从《When Answers Become Cheap》向外训练 18 组新英文：scarce/cheap、point at、depend on、step away、rush to、treat as、working material、challenge、omit、reduce to、thrive、sulk、take responsibility 等。每组都带新场景、段子和词块，让体裁、措辞与 WT 一起长。