九年级第九单元课时1 (2)

1、When,was,it,invented,?,Unit 9,paper-making 造纸术,compass 指南针,printing 印刷术,gunpowder 火 药,Four Great Inventions in ancient China,invention （n） 发明物,They were invented in ancient China,invent （v）发明,Some morden inventions,calculator,In what order do you think they were invented?,Report：,A：I think the calcu

2、lator was invented first . Then _ was invented before _. And _ was invented after _.,B：I dont agree with you. I think _,1876,1927,1976,1885,1971,_,_,_,_,_,a,b,c,d,e,a,b,c,d,e,A：When was the _ invented?,B：I think it was invented in 1876.,A：What is it used to do?,B： It is used to talk with people.,A：W

3、ho was it invented by?,B：It was invented by Bell.,A：When were the _ invented?,B：I think they were invented in_.,A：What are they used to do?,B：They are used to _.,1885,help people travel faster,A：Who were they invented by?,B：They were invented by _,Karl Benz,A：When was the _ invented?,B：I think it wa

4、s invented in_.,A：What is it used to do?,B： It is used to_.,1927,help people have fun,A：Who was it invented by?,B：It was invented by_.,Baird,A：When were the _ invented?,B：I think they were invented in_.,A：What are they used to do?,B：They are used to _.,1971,count,A：Who were they invented by?,B：They

5、were invented by _,CleveSimckley,A：When were the _ invented?,B：I think they were invented in_.,A：What are they used to do?,B：They are used to _.,1976,work and study,A：Who were they invented by?,B：They were invented by _,Steve Jobs,summary,invent (v) 发明,invention (n) 发明物,inventor (n) 发明者,light bulb,E

6、dison,practice：,Make sentences with invent, invention and inventor,1879,Have a try,Can you tell us more inventions ?,When was it invented? It was invented about a thousand years ago. Where was it invented ? It was invented in China. What is it used to do? Its used to write on.,I think its papermaking.,Guess theinvention,Game：guessing,steam engine 蒸汽机车,George Stephenson 乔治