Unit 6 When was it invented? SectionA（3a-4c）教案 人教版英语九年级全册

Unit6 SectionA（3a-4c）
教学目标
1. 掌握一般过去时态的被动语态，如下例句：
Alexamder Graham Bell invented the telephone in 1876.
=The telephone was invented (by Alexamder Graham Bell) in 1876.
2. 通过练习来巩固所学的一般过去时的被动语态的语法知识，达到学以致用的目的。
教学难点
完成学习3a，3b; Part4 pair work.。
a. 复习第二课时所学的知识和词汇：
b. 交流:谈谈你知道的一些发明物的情况。
c. exercise:
教学过程
一、Let’s look, think and say.
What will you do if you are really thirsty
I’d like to drink these drinks(饮料).
What’s the most traditional drink in China
3a
Read the passage quickly and match each paragraph with its main idea.
Read the passage again and answer the questions.
1. When was tea first drunk
2. Who is called "the saint of tea"
3. What is Cha Jing about
Read Para. 3 and complete the sentences.
1. Tea was brought to Korea and Japan during _________________
2. In England, tea didn’t appear until around _____________.
3. The tea trade from China to Western countries took place in the _______
3c
Complete the sentences with the correct forms of the verbs in the box.
invent, drink, bring, produce, trade
1.One of the world’s favorite drinks was________by accident.
2.Tea was first ________ by Shen Nong 5,000 years ago.
3.A nice smell was _________ when the tea leaves dropped into the hot water.
4. Tea was__________ to Korea and Japan during the 6th and 7th centuries.
5.Tea is now ________ between many different countries.
Summarize
Fill in the blanks.
Tea ___________ (invent) by a Chinese ruler Shen Nong by accident about 5000 years ago.
Lu Yu_________(call) the saint of tea. His book Cha Jing describes how tea plants ___________(grow) and used to make tea. It also discusses where the finest tea leaves _____________ (produce) and what kinds of water _________ (use).
Tea ___________ (bring) to other countries by tea trade .The Chinese understand tea best.
What kinds of tea do you know
1. Green tea
2. Black tea
3. Wu long tea
4. Compressed tea（砖茶）
5. Scented tea （花茶）
What are the effects (功效）of tea
1、Make you more beautiful
2、Keep cancer from you
3、Help you lose weight
4、Make your mind clear
4a
Rewrite the sentences using the passive voice.
1.They sold the fridge at a low price.
_______________________________
2. Somebody stole my camera from my hotel room.
_______________________________
3. Where did you take these photos
4. Our parents advised us not to go out alone.
______________________________________
5. Different writers translated the book into different languages.
_________________________________________
4b
Complete the sentences with the correct forms of the verbs in the box.
eat like invite tell lock ring break bring
1. You ____________ to the party last night, weren’t you Why didn’t you go
2. The earthquake happened all of a sudden, but luckily the villagers _____________to a safe place.
3. The door ____________ when we arrived, so we _______ the bell.
4. The students _________ not to eat or drink in class, but Ruby _________ the rule when she started eating a biscuit in science class.
5. The cookies ___________by the hungry kids in less than 20 minutes, and they really ______them.
4c
Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.
The telephone ___________ (invent) by Alexander Graham
Bell. He __________(born) in 1847. Mr. Bell _________
(work) on the invention of the telephone with Thomas Watson. In 1875, Mr. Bell ___________ (learn) how to send musical notes through an instrument similar to a telephone.
Finally, the telephone _______________ (invent) in 1876. The first sentence that _________ (say) on the telephone by Mr. Bell was “Mr. Watson, come here; I want to see you.” Today the telephone _____________ (use) around the world.
巩固练习
同学们做Exercises
thank you