北师大版 英语重难点讲解：八年级下unit 12 western china part 2

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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。21世纪教育网

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。21世纪教育网
e.g. Inner Mongolia lies in the 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 day
It’s getting warmer and warmer in spring, and plants are growing.21世纪教育网
B)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
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.
What’s this in English It’s 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.21世纪教育网
We have to work hard if we want to live better.
2. must 只有一种形式，通常表示现在或将来的动作，而have to 有各种时态。
I’ll 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。Mustn’t 表示“不准”，“不允许”，“禁止”；don’t have to 则表示“不必”，与“needn’t”同意。
e.g. You mustn’t smoke in the classroom.
You don’t have to worry about his studies.
——Must I hand in my exercise book now, Mr. Zhao
——No, you needn’t . 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 correct heading from the box.

In 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 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 between 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, 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 protected 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 haven’t seen
Dear cousin,
I you for about a year. How is everything with you
Take a look at this picture. Can you guess where it is It’s the highway 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 modern 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 to teach us. She’s a volunteer from Guangzhou. She’s been to many places and has shown us some of her photos. She often tells us interesting stories. We all like her. Right now, she’s gone to Xi’an to buy some computers for our school. Also, we have a new school library. There are many new books and magazines. I borrowed Harry Potter from the library yesterday. Have you heard of it I can’t 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 you soon.
Best wishes!
Brain

（三）词汇
1. amaze v. —— cause surprise
Your knowledge amazes me.
你丰富的知识让我大吃一惊。
It amazed us to hear that you were leaving.21世纪教育网
We 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. discovery
3. reflect ——v. to throw back
The 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, show
His behaviour reflects his lazy 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 respect
I 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。
He’s always looking in the mirror, admiring himself!
他常常对着镜子自我欣赏！
5. a volunteer from…
6. can’t wait to do sth.
7.in one’s life
8. borrow …from…
9.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.
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