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1、Unit 4 Our WorldTopic 2 Are you sure there are UFOs?Section AscientistslightTVcomputer fireWhich is the most important?RobotsWe are sure robots can take the place of humans to do some work in some situations.Are you sure?When did the first robot appear?1aLook,listen and sayThe scientists invented th
2、e first robots in 1921.What can robots do for us?1.They can take the place of humans to do hard or boring work in some situations.2.They can also do lots of dangerous work instead of humans.3.They can do some work faster and better than humans.“take the place of”VS“instead of”Robots can take the pla
3、ce of humans to do hard or boring work in some situations.=They can also do lots of dangerous work instead of humans.=They can also take the place of humans to do lots of dangerous work.Robots can do hard or boring work in some situations instead of humans.2Work alone(录音录音1)16325lift parts of trucks
4、41.Robots will make humans lose their jobs.2.Robots can do some work better than humans.3.Robots can do many kinds of jobs.4.Robots can do more difficult work than humans.5.Robots will make humans lazy.6.Robots can do dangerous work.7.Robots work without pay.Good things Bad things2、3、4、6、71、5Group work：先填空完成句子，然后续写完短文 A Great Invention:Robots Robot was a great invention.invented it in 1921,but before that,something like robots .Robots can do lots of things for us.But robots may do some bad things._.If I have a robot in 20 years,Im sure it will_.