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1、自主预习案自主预习案sour/sa(r)/adj.酸的酸的haw自主预习案自主预习案crispy/krsp/adj.脆的脆的lotus root自主预习案自主预习案n.顾客customerby mistake错误地in the end最后for a long time很久sweetsaltyhot,sourpiecookiessweetcrispyWhat food would you prefer to eat?How does it/do they taste?It tastes/They taste随堂导学案随堂导学案随堂导学案随堂导学案bittercrispy and saltycri
2、spy and saltysoursour sweet sweet The words in the box describe how food can taste.Write them under the correct pictures.Some pictures have more than one word.salty1a sweet crispy salty sourWrite the name of a different food after each word.1b sweet banana,apple,orange,cake,sugarcrispysaltysourFrenc
3、h fries,popcorn,lettucepizza saltpickle,plum,vinegarHow do they taste?Do you like potato chips?The history of chipsWhen were potato chips invented?Who were potato chips invented by?How were potato chips invented?Listen and circle T for true of F for false.1.The potato chips were invented by mistake.
4、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 FT FT FT FT FT FT FT FT FT FT FT F1c Do you know how potato chips were invented?Potato chi
5、ps by a cook called George Crum.They were invented in .GeorgeCrum cut the potatoes really,really and then cooked them for a long time until they were .Finally he put lots of salt on them so they were .The History of Potato chipswere invented1853crispysaltyListen again.Complete the sentences.1d thin1
6、e Make a conversation about the invention of potato chips.Use the information in 1c and 1d.A:Did you know potato chips were invented by mistake?B:Wow,I didnt know that.Who invented them?A:1.by mistake 介介词词短短语语，意，意为为“弄弄错错；错误错误地地”make mistakes 意意为为“犯犯错错，出，出错错”mistakefor 意意为为“把把误认为误认为”2.He wanted to ma
7、ke the customer happy.他想使客人高他想使客人高兴兴。make sb.do sth.“让让/使某人做某事使某人做某事”make sb./sth.+adj.“使某人使某人/某物怎么某物怎么样样”make sb./sth.+n.“使某人使某人/物成物成为为”3.in the end=at last=finally “最后，最后，终终于于”4.until的用法的用法until 用于肯定句中，意用于肯定句中，意为为“一直一直为为止止”，主，主句中的句中的谓语动词谓语动词必必须须是延是延续续性性动词动词。eg：他每天工作到半夜。He works until midnight ever
8、y day.until 用于否定句中，即用于否定句中，即notuntil意意为为“直到直到才才”。若主句。若主句为为将来将来时时，从句常用一般，从句常用一般现现在在时时。eg：They wont leave until they finish the work.1.薯片是意外的发明的。Potato chips were invented _ _.2.顾客说他们不够咸。The customer said they were _ _ _.3.乔治想使顾客高兴。George wanted to _ the customer _.4.顾客最终高兴了。The customer was happy _ _ _.5.你知道薯片是如何发明的？Do you know _ potato chips _ _?by mistakePractice not salty enoughmakehappyin the endhowwere invented