人教新目标Go For It!英语九年级全册《When was it invented?》SectionA PPT下载(第1课时)
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人教版九年级英语上册《When was it invented?》SectionA PPT下载(第1课时)，共34页。
情景导入
T：There are many useful things in the world.They help us a lot in life.(Show some pictures on the screen)When were they invented?
S1：The telephone was invented in 1876.
S2：The computer was invented in…
生成新知
Do you know them?
When were they invented?
Who were they invented by?
Talk about the inventions(发明).
Which one do you think is the most helpful in our daily life?
问题探究
辨析invent/discover/find/find out
① invent意为“发明；创造”，主要指通过想象、研究、劳动等创造出前所未有的东西，尤指科技上的创造发明。
② discover指发现或偶然发现本身就存在但未被认识的事物。
③ find强调找的结果，即“找到”，通常指偶然发现。
④ find out指经过观察、调查，把某事物查出来，意为“搞清楚；弄明白”。
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