2. 九年级人教新目标 Unit 9 When was it invented? Self check

3. 1. I don’t like eating chocolate. The taste is too _______. 2. Mom added salt but it still wasn’t _____ enough. 3. I prefer lemons to oranges. I like the _______ taste. 4. She likes ________ cookies. They are hard, dry and easily broken. crispy sweet salty sour crispy, sweet, salty, sour 1. Fill in the blank with the correct word given.

4. Explanation 1. I prefer lemons to oranges. prefer 是动词，意为 “ 更喜欢 ” ，常可与 like better, instead 进行替换。常见句式有 prefer A to B, prefer doing to doing B, prefer to do A rather than do B. 例如： I would prefer playing outside to watching TV. I prefer to go to the movie rather than stay at home.

5. 2. They are hard, dry and easily broken. broken 为 break 的过去分词，相当于形容 词的作用，意为 “ 碎了的 ，坏了的 ”, 可作 定语或表语。例如： --What’s wrong with your watch? --It’s broken. There is some broken glass on the ground. Be careful of the glass broken by the cat.

6. Do you know the difference? be invented by be invented in be invented to Emphasize on person Emphasize on time or place Emphasize on the usage Can you make sentences with them?

7. 1. Telephone ______________ Alexander Graham Bell, who is an Englishman. 2. Various things have ______________ record the history of human being. 3. Paper ____ first __________ ancient China, and it is one of the most important inventions in the world. be invented by/in/to was invented by invented inwas been invented to

8. Please translate these sentences into English. 1. 这样的话，我们明天就可以完成任务了。 __ ____ ____, we can _______________ our task tomorrow. 2. 茶是在很偶然的情况下发明出来的。 Tea was _________ __ _____________. 3. 我们爬山的时候不小心掉进一个山洞里了。 We _____ ______ a hole when we _____ ________ the mountain. 4. 自从发明了电之后，人类历史进入了新的篇章。 After electricity ____ ________, our history _____ _____ a new stage. In this wayfinish/complete invented by accident fell intowere climbing was invented got into

9. 2. When were they invented? abacus in the 19th Century

10. umbrella at the end of Spring and Autumn Period

11. binoculars in 1600

12. camera in 1839

13. bicycle in 1839

14. car in 1885

15. motorcycle in 1885

16. toothbrush in 1780

17. washing machine in 1858

18. A sample version The abacus was invented in the sixth century by Chinese people. The umbrella was invented about 4,000 years ago in Assyria, China and Egypt. The binoculars was invented in 1854 by Galileo Porro in Italy. The camera was invented in 1827 by Joseph Nicephore Niepce who took the first picture. The bicycle was invented in 1880s in England.

19. Just for fun!

20. 根据汉语及首字母写出单词。 1. When I began to sing, he laughed and made me very e___________( 尴尬的 ) ． 2. After a long trip to Europe, 1 felt very e________( 精疲力竭的 ) ． 3. a_______ ： to make known publicly 4. d_______ ： to give an account of in speech or writing embarrassed exhausted announce describe

21. 5. a_________ ： one that is invested with this power, especially a government or government officials. 6. Last night a friend of mine invited me to a c_______ party ( 化装舞会 ) ． authority costume

22. Homework Choose one of the inventions which you think is the most important, and then write a paragraph about it.