1、Unit 12 Western China一. 本周教学内容：Unit 12 part 2学会使用一般过去时，现在完成时和一般现在时描述生活中事物的变化二. 本周教学重点：1. 介词 in 的使用2. 情态动词的使用3. 课文解析三. 具体内容:（一）in 的使用1. 表示所处方位：A）at, in 表示在某地时，at 后接小地方，in 后接大地方。e.g. When did you arrive at the station?I arrived in Beijing last night.B) 表示“位于”，in 表示在某范围之内e.g. Inner Mongolia lies in the
2、 north of China.Taiwan is in the southeast of China.2. 表示时间A）in 用于表示在年，月，季节，上午/下午/ 晚上/白天e.g. in May,1994 in spring in the morning/afternoon/evening/ the dayIts getting warmer and warmer in spring, and plants are growingB)后跟表示一段时间的短语，“在时间内”或“在时间后”Can you finish drawing a horse in five minutes?3. 其他用法
3、表示“穿着，戴着”或“用某种语言/材料”等e.g. She was in red.Please write it in a blue ink.Whats this in English? Its an English-Chinese dictionary.(二)must, have to 的使用。1. 两者都可以表示“必须”， 但 must 强调主观上认为有义务，有必要；而 have to 着重于表示客观上的需要，含有“不得不”的意味。e.g. We must work hard.We have to work hard if we want to live better.2. must 只有
4、一种形式，通常表示现在或将来的动作，而 h ave to 有各种时态。Ill have to go with her tomorrow.Yesterday it rained heavily when school was over. We had to stay in our classroom.3. 用于否定句中时，两者意思有很大的不同。Mustnt 表示“不准”，“不允许”，“禁止”；dont have to 则表示“ 不必”，与“neednt”同意。e.g. You mustnt smoke in the classroom.You dont have to worry about h
5、is studies.Must I hand in my exercise book now, Mr. Zhao?No, you neednt . You may give it to me tomorrow.4. must 可用于一种较为肯定的推测或推断，常用于肯定句中，意为“一定要，肯定”，而 have to 没有此用法。e.g. If it is really lost, it must be found.You must be very tired.Ex. Read the text and try to choose a co rrect heading from the box.I
6、n 1974, the tomb of the First Emperor, Shi Huang Di, was discovered. The discovery amazed the world because of the large number of life-like, life-size terracotta army soldiers in the tomb. Each soldier is wearing an army uniform. No two faces look alike and each shows a different expression. Every
7、year, many foreign tourists visit the Terracotta Army to admire the Chinese art from 2,000 years ago.For centuries, the Silk Road was the most important way of communication between East and West, it got its name in the 19th century. A German geographer proved it to be the route of silk trade betwee
8、n the early Europeans and the Chinese. However, people did not only pass silk along the Silk Road. People traded goods of many kinds. It was also important for the exchange of ideas.The Jiuzhaigou Valley is in the north of Sichuan Province. It is one of the natural wonders of the world. Every year,
9、visitors from all over the world come to admire the mountains, lakes, streams, trees, underground springs, and waterfalls. The most amazing sights in the valley are probably the small lakes all over the mountains. The water reflects the sunlight in different colors. The valley is also home to many p
10、rotected plants and animals.Read the letter and complete the blanks with the phrases from the box.Have never seen has found have just finished has come havent seenDear cousin, I you for about a year. How is everything with you? Take a look at this picture. Can you guess where it is? Its the highway
11、near our village. The workers building the first part, and now they are working on a bridge over the river. Cars and trucks travel on it every day. I enjoy counting the cars. I have never seen so many cars in my life.The government gas near our village. The villagers are helping to build a large mod
12、ern gas field. After school, I often go to and watch them working in the field.Do you still remember the small shop in our village? I went there yesterday. To my surprise, there were many new things such as CDs, Walkmans, and DVDs. I such nice things in our village before.By the way, a new teacher t
13、o teach us. Shes a volunteer from Guangzhou. Shes been to man y places and has shown us some of her photos. She often tells us interesting stories. We all like her. Right now, shes gone to Xian to buy some computers for our school. Also, we have a new school library. There are many new books and mag
14、azines. I borrowed Harr y Potter from the library yesterday. Have you heard of it? I cant wait to read it.We have a telephone in our house now. Give me your phone number so that I can call you.Looking forward to hearing from yo u soon.Best wishes!Brain （三）词汇1. amaze v. cause surpriseYour knowledge a
15、mazes me. 你丰富的知识让我大吃一惊。It amazed us to hear that you were leavingWe were amazed to hear that you were leaving.听到你要走，我们都大吃一惊。To my amazement I got there first.令我吃惊的是，我是 第一个到的。2. discover v. to find (something that already existed but was not known about before)Columbus discovered America in 1492.哥伦布于
16、 1492 年发现美洲。 v. to find out (a fact, the answer to a question or problem.)We soon discovered the truth.我们很快就查明了真相。n. discovery3. reflect v. to throw backThe mirror reflects my face.镜子照出我的脸。The mountains were reflected in the lake.山在湖面上反映出来。 to express, make clear, showHis behaviour reflects his lazy
17、 attitude to work.他的行为反映了他对待工作的懒惰态度。4. admire v. to think of or look at with pleasure and respectI admire her for the way she solve the problem.我钦佩她解决问题的方法。He gave her an admiring look.他向她投以赞赏的一瞥。Hes always looking in the mirror, admiring himself!他常常对着镜子自我欣赏！5. a volunteer from 6. cant wait to do sth.7.in ones life 8. borrow from9.hear from sb. 10 hear of 11. take a look 12. look forward to doing sth.13.buy sth. for sb. =buy sb. sth. 14. watch sb. doing sth./do sth.
