高中二年级Lesson 91 Reading

1) Use the information from Lesson 90 tocomplete the table (Ex. III in AB) on the differences between the old andmodern telephones. (thin, heavy, cheap, short, glass,S----E----L----E----S S-sound, E-electricity L-light)

2) You may ask some questions to reviewLesson 90: What do you call a book with all the telephone numbers in it? / Whydid you have to wind a handle at the side of the old telephone? / What did anoperator do? / What is the problem with using metal wires to send electricalsignals? / Which new model of telephone is most useful for a doctor? (Atelephone directory. / To produce electricity. / The operator connected the twonumbers and made a note of the length of the telephone call and the charge. /The problem with electrical signals is that they get weaker and weaker as theytravel along metal wires./Redirection. )

2．Presentation

Use two situations to lead Ss to know insome cases, the ordinary telephones cannot work and let them think about whatkind of telephones they can use: A baby is ill. Its mother is worried, but itsfather is on business somewhere not at his working place. / A professor has twostudies. He is in one of them. His friend phones to ask for some information ina book in the other study. Ss may discuss and according to their everydayknowledge they can get their answers. (Mobile phones;cordless/ wireless phones). Show pictures of a mobile phone and acordless phone.

B．While-reading

1．The first time the Ss read the article on SB Page 64, they will skim it.Say please read the article quickly. When you have finished, make quick notesabout the following questions. Ask Ss to share their answers: Which new type ofmobile phone is described in the text? / How many names can one phone record?(One with a small computer which remembers the telephone numbers of people youwant to ring. / Up to 20 numbers. )

2．Now the Ss read the first paragraph carefully again, and try to descr