Unit9whenwasitinventedb.ppt

* Unit 9 When was it invented? Section B: 1a: sweet crispy salty sour salty sour sweet sweet bitter cold 1b: Write the name of a different food after each word. sweet __________ salty __________ bitter__________ crispy _________ sour __________ hot _____________ 2a: Listen and circle “T” (for true) or “F” ( for false). by mistake 弄错 eg: I took his backpack by mistake. 我错拿了他的书包。 2. in the end = at last =finally 最后.终于 eg: He finished the homework in the end. 2b: listen again and complete the sentences. The history of chips (1)__________________ that potato chips were invented by mistake? Chips (2)________________ by a chef called George Crum. They were invented in(3) _________. George Crum cooked them for a long time until they (4)____________. And he sprinkled lots of salt on them so they were (5)_____________. Did you know were invented 1853 were crispy really salty Talk about the things were invented by mistake. When is the article about? ______________________________________ When was it invented? __________________________________ 3. Who was it invented? ______________________________________ How was it invented? ______________________________________ The article is about the invention of tea. It was invented over three thousand years age. It was invented by the Chinese emperor, Shen Nong. It was invented by accident. 1. by accident : 偶然地 2. although (though ) 虽然…… , (但是…….) eg: Although he is very old, he still works hard. 他虽然年纪很大，但是他仍然努力工作。 = He is very very old, but he still works hard. 3. discover: invent: to find or learn sth that nobody knew or had before to think of or make sth for the fist time eg: Who discovered America? eg: Laszlo Biro invented the ball-point pen. 4. according to : 根据……； 据….. 所说 ； 按照…… 的