Step3 Pre-reading (阅读前准备) (4-5 minutes)
Present some pictures about Africa to the students and encourage them to express their impression on Africa.
(设计意图:呈现与阅读文章相关的图片自然、直观地让学生了解课文的相关内容,激发学生进一步学习探索的兴趣和欲望,为下面的阅读理解提供相应的背景知识并做好铺垫。)