Unit3   who am I?

Reading and Comprehending

【导学目标】

1.      Get students to use some useful new words and expressions correctly.

2.      Enable students to make sentences after the useful sentence patterns.

3.      Develop students’ spirit of cooperation and teamwork.

【课前自主预习】

Step1 .pre-reading

1: How much do you know about computers? (Make a survey)      

2.       Using the words in warming-up to guess what it is.

① An old calculating machine used in China until now. ___________

② It is a new calculating machine which can solve a large number of mathematical problems. ___________

③ It is built to solve some mathematical problems. But it is too big. ___________

④ It is a computer which can solve all kinds of problems and is used widely now . ________

⑤ It is a kind of computer which can be taken conveniently(方便). ___________

3.       Can you put these inventions in an order according to the time when they appeared?

(     )  Analytical machine（分析机）

(     ) Laptop

(     ) Calculating machine （计算机器）

(     ) Robot／android

(     ) PC

(     ) Universal machine（通用机器）

Step2 reading

(1) Fast reading

1. Who am I? __________________________________

2. Who was the first person to invent the earliest computer? ____________________

3.  Who was the next important person to design computers? ____________________

(2) Skimming

Task1. Find out the topic sentences of each paragraph (P19.Ex2)

Task2 .Summarize the general idea of this passage.

_____________________________________________________________

(2)  Careful reading:

Task1 Read the first paragraph then fill the blanks

Read the second paragraph then fill the blanks

Task2. True or False

1. In 1642 I began as a calculating machine and could solve any mathematical problem. （  ）
2.  My real father was Charles Babbage, who wrote a book and build me in 1936.（  ）
3.  After I got my new transistors in the 1960s, I became smaller but cleverer and quicker. (   )
4.  I was brought into people's homes in the 1970s（  ）
5. Since my birth I have been built to take the place of human race. （  ）

Task 3: Look at the timeline below. Fill in the blanks with information from the reading text.

Task4 Conclusion of the text  How did computers develop?

 A calculating machine  →_____________→  _________________→_________________→________________→________