初中英语牛津上海版 (五四制)九年级上册（新版）Unit 4 Computers教学ppt课件

这是一份初中英语牛津上海版 (五四制)九年级上册（新版）Unit 4 Computers教学ppt课件，共25页。PPT课件主要包含了monitor，显示屏，驱动器， speakers，扬声器 ， 键盘，keyboard，mouse等内容，欢迎下载使用。
Where can we find a cmputer?
D a brainstrming
: shws wrds, pictures and infrmatin
: the center f a cmputer r the brain f a cmputer
: devices that peple put disks int
: devices that peple can hear sund
: peple can type in infrmatin
: it can help yu t cntrl the cmputer
1. The _________ shws wrds and pictures.2. We use the_________ fr typing in infrmatin.3. The ________ ________and________ ________ recrds infrmatin.4. The ________ helps yu t cntrl the cmputer.5. The________ ________ cntains all the cmputer’s electrnics.6. We can hear the sund frm the __________.7. We put the _________ r _________ int the _______ in the main unit.
Read and cmplete
Which part cmes the first?
Which part cmes the last? What’s in it?
What are they accrding t the rder?
What makes them wrk?
Lk and think
Nt s many years ag, yu ______ ______ saw cmputers. Nw they are __________. There may als be ______, hidden cmputers in yur hme that yu are ________ _______.There may be ne inside yur TV set, _________ r ________ _________. S maybe yu _______ ______ cmputers mre than yu ________.
nt knwing abut
almst never
rely n; need
ntice; knw abut
Listen and cmplete
Nt s many years ag, yu ______ ______ saw . Nw they are __________. There may als be ______, hidden in yur hme that yu are ________ _______. There may be ne inside yur , r . S maybe yu _______ ______ cmputers mre than yu ________.
Read the first part f the passage and cmplete the table.
Cmputers have becme smaller and smaller.
bigger than cars
the size f televisins
the size f big bks
small enugh t put in yur pcket like a bar f chclate
s tiny that yu may be unaware f them
While yu read
The first cmputers were built in the 1940s. They were bigger than cars! Since then cmputers have becme smaller and smaller. Desktp cmputers are the size f televisins. Laptps are the size f big bks. Nw we have palmtp cmputers. They are small enugh t put in yur pcket like a bar f chclate. Other kinds f cmputers are s tiny that yu may be unaware f them. There is prbably ne inside yur TV, telephne, r washing machine. S yu prbably depend n cmputers mre than yu realize.
Read and paraphrase
What kind f jbs can a cmputer d?It is cmmn knwledge that cmputers are super calculatrs. They can calculate very fast and rarely give wrng answers. They can als type, print and draw things like diagrams and graphs. They can teach yu and play games with yu. Mre imprtantly, they can perate railways (like the undergrund) and fly aerplanes and spaceships. Fr these reasns, we ften call them electrnic brains.
cmmn knwledgesmething knwn by everynesmething nt knwn by many peple
rarelyftenseldm
peratemake (it) wrkunderstand
1. Cmputers can type, print, but they can’t draw things. Cmputers can calculate but always make sme mistakes, s we rarely use it t calculate.3. Cmputers are super calculatrs. Because aerplanes and spaceships are perated by peple, they dn’t need any cmputers.5. Cmputers are called electrnic brains.
D T/F questins
Cmputers are electrnic brains.1. They can ________ very fast and rarely _______ wrng answers.2. They can als ______, ______ and ______ things like diagrams and graphs.3. They can ________ yu and ______ _______ with yu.4. They can ________ railways and _______ aerplanes and spaceships.
In the future, we may find cmputers…(where).We can…