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《Learning about Language》集体备课PPT课件优质课下载
3. To learn the usages of the present perfect passive voice.
Learning aims
Revision
the history and development of computers
1642 -- 1822 -- 1936 -- 1940s -- 1960s
--1970s --Now
1.floppy disc
2.chips
3.monitor
4.modem
5.DVD-ROM
6.scanner
7.keyboard
8.printer
(P56 Ex.1)
1. Find the word or expression for each of the following meanings from the text.
_________ complete change in ways
of thinking, working, etc.
2. ________ connected computer system
3. ________ to make things easier
4. ________ to find the answer using
numbers
calculate
simplify
revolution