老师：各位同学大家好，欢迎来到北京市中小学空中课堂。我是北京中学明德分校的金鑫老师，很高兴跟大家一起学习外研版八年级上册 module two。
老师：Unit 3, language in use. Are you ready? Here we go. Look at the picture. Do you still remember what we've got to know about Shenzhen from Unit 1? What was it like about 30 years ago? Yes, it was a small village. What is it like today? Today it's a very big and new city. So it's getting bigger and busier. Is Shenzhen a newer city than Hong Kong? Yes, Shenzhen is a new world city than Hong Kong. Is it busier than Hong Kong? No. Hong Kong is busier than Shenzhen, but someday it will become as busy as Hong Kong.
老师：Now, let's recall something about Tony's hometown, Cambridge, from Unit 2. Where is it? Yes, Cambridge is a beautiful city in the east of England. What is population? Good. It has a population of about 120000. Is there anything special about it? Yes, it's famous for its university and there are lots of old buildings and churches to visit.
老师：How about London? Where is it good? London is in the south of England. What's his population? Yes, it has a population of about seven and a half million. How old is it? It is about 2000 years old. Is there anything special about it? Of course, it's famous for Big Ben vacuum Palace, Tower Bridge and so on.
老师：Now let's compare the population of the two cities. Cambridge has a population of about 120000. London has a population of about seven and a half million. So London has a larger population than Cambridge, and Cambridge has a smaller population than London.
老师：Now, let's read the sentences again and have a summary. It is a newer city than Hong Kong. Hong Kong is busier than shenzhen。 London has a larger population than Cambridge. Cambridge has a smaller population than London.
老师：这四个句子都是在对两者进行比较。newer，busier， larger and smaller 是形容词比较级形式，在比较级后面用 than 引出所比较的对象。句型结构为 a 加比较级， then b 意为 a 比 b 更怎样？
老师：Now let's look at another two sentences is getting bigger and.
老师：Busier get 加比较级以为变得更怎样？这个句子没有第二个比较对象是自身的过去和现金做比较。
老师：but someday it will become as busy as Hong Kong。
老师：此句是形容词同级比较 as 原级 as 意为和某物或某地一样，怎样？那么形容词比较级的变化有什么规则？让我们看看刚才学习的形容词比较级，你知道他们的原籍是哪些词吗？
老师：lets check together，newer，new， smaller small，larger， large wider，wide， bigger big hootter hot busier busy。
老师：你能说出它们的变化规律吗？ good new and small 在词尾加以r，这也是一般的规则。 large and wide 以字母 e 结尾，直接加r， big and hot 以重读闭音节结尾，末尾只有一个辅音字母双写该字母再加一 r busy，以辅音字母加 y 结尾把 y 变成i，再加 e r。
老师：okay everyone。 Let's practice. Please open your book and turn to page 14. Let's complete the sentences with the correct form of the words in the box in Activity 1. Now read the verse with me. Peak, cold, large, old tall. 1 Shenzhen was very small about 30 years ago, but it is much now from the time about 30 years ago. And now we know it's a comparison of Shenzh's past and present, from small an
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