Unit 14 Roots

教学目标

一、教学目标与要求
　　通过本单元教学，学生应能熟练地运用表示“希望、意愿、祝愿”的常用语；复习it的用法；了解19世纪欧美白人捕捉和贩运黑人作奴隶及虐待他们的罪恶历史。
二、教学重点与难点
1．重点词汇
become of, once in a while, provide, the moment, go back, role, reason
2．重点句型
　　1)Born a free man, he was now in Chairs．
　　2)What shocked him most was that the man who carried him were black．
　　3)Worse was to come．
　　4)All he knew was that his African ancestor taught his son and grandson the words in his own language for “river” and “guitar”!
3．语法it的用法
　　1)There's a knock at the door．Who is it?
　　2)It's a lovely baby．Is it a boy or a girl?
　　3)It is/has been three years since we last met．
　　4)It is necessary for you to do so．
　　5)It was in the street that I met him this morning.