Unit 5 Meeting your ancestors语言点
编稿：牛新阁 审稿：王春霞
学习目标
重点词汇
alternative, tentative, interrupt, acute, assume, ample, primitive, analysis, sharpen, somehow, applaud, accelerate, arrest
重点短语
regardless of, at most, cut up, be/ get fed up with, look ahead, date back to
重点句型
情态动词+ have done
if only
知识讲解
重点词汇
alternative
【原句回放】Can you think o f the alternatives we would use today? 你们能想得出来今天我们用什么来替代这些东西吗？
【点拨】alternative n. 替换物
