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能通过图片和语境猜测词义，减轻学习过程中的压力。
了解Topic sentence的含义并初步学习如何在口语表达和书面表达中进行运用。
3.Emotional aims: (optional)
引导学生了解过去，珍惜现在和展望未来，培养学生热爱生活的积极态度。
4.Culture awareness: (optional)
通过对北京今昔变化的对比，引导学生关注自己身边社会的变化，培养他们热爱家乡热爱祖国的情怀。
Ⅲ. The key points and difficult points
1. Key points:
Words and phrases: communication, report, relative, develop, since, satisfy, medical, machine, rapid, progress, already, be crowded into, receive a
good education, keep in touch with, what’s more, make progress, succeed in doing sth.
Grammar: Present Perfect
2. Difficult points： Look at the pictures of Beijing in the past and at present.
如何通过语境，猜测生词、短语的意思。
如何在阅读过程中找出各个段落的topic sentence。
口头报告和书面写作时，能有意识的使用topic sentence和supporting details。
Ⅳ. Learning strategies
通过任务前活动，引导学生预测阅读内容。
通过找主旨句的方法，教会学生在做口头报告或写作时正确使用topic sentence。
通过图片和上下文，提升猜测词义和扫清阅读障碍的学习策略。
Ⅴ. Teaching aids
单词卡片（如narrow/wide，relative，machine，etc.）或者幻灯片；能反映学生家乡今昔变化的图片或照片等。
Ⅵ. Teaching procedures
Stage
(time period)Interaction
patternsTeacher activityStudent activityRemarks1Getting studentsClass activityGreeting
T: Good morning, everyone. Greeting
Ss: Good morning, 2Pre-reading
(5 mins)Class activity Present some pictures and get the Ss to guess the meaning of the new words.
T: Look at the picture, the ring road is very wide, but this small road is narrow. So what’s the meaning of “narrow”?
Ss: …