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1、Unit 9When was it invented?Section BPeriod Onecrispy salty sour by mistake chef sprinkle adj.脆的；易碎的脆的；易碎的adj.咸的；含盐的咸的；含盐的adj.酸的；酸的；酸味的酸味的 错误地错误地n.厨师厨师v.撒（粉末状物）；撒（粉末状物）；洒（液体）洒（液体）Words and expressionscrispy and saltycrispy and saltyDescribe how food tastes.Describe how food tastes.potato chipssour so
2、ur lemon sweet Ice cream sweetsweetteasoursweetsweetcrispy,salty1asweet crispy salty sourFill in the blanks.1bsweet:_crispy:_salty:_sour:_banana,apple,soda,cake,honeysalad,lettuce,french friesfrench fries,olives,pepperonipickle,grapefruit Write the name of a different food after each word.2a listen
3、and circle“T”or“F”.1.The potato chips were invented by mistake.2.They were invented in 1863.3.The customer thought the potatoes werent thin enough.4.The customer said they werent salty enough.5.George wanted to make the customer happy.6.The customer was happy in the end.T TF FT TT TF FF F _that pota
4、to chips were invented by mistake?Chips _ _by a chef called George Crum.They were invented in_.George Crum cooked them for a long time until they _And he sprinkled lots of salt on them so they were_.The history of chipsThe history of chipsDid you know were invented1853were crispyreally salty2b liste
5、n again.Complete the sentences.Role play the conversation about the invention of the potato chip.Use the information from the activities above.A:Did you know potato chips were invented by mistake?B:Wow,I didnt know that.Who invented them?A:2cPairworkThe potato chips were invented by mistake.【经典习题经典习
6、题】完成句子：完成句子：很抱歉我错拿了你的书包。很抱歉我错拿了你的书包。Im sorry that I took your schoolbag _ _.【要点点拨要点点拨】by mistake意为意为“错误地错误地”，常置于句末。，常置于句末。by mistake【拓展延伸拓展延伸】mistake作名词时，还可构作名词时，还可构成短语：成短语：make a mistake犯错误。犯错误。mistake还可用作动词，常用于还可用作动词，常用于mistakefor表示表示“把把误认为误认为”。如：。如：I mistook Kate for her sister when I met her yesterday.根据句意和首字母提示补全单词。根据句意和首字母提示补全单词。1.There were four famous inventions in 2.a_ China.2.These cars were p_ by the same company.3.Dont t_ stones at the birds.4.Few pears r_ on the trees after the heavy rain.5.I dont like the t_ of the meat.ncientroducedhrowemainedaste