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1、Unit 6When was it invented?第四课时Section B (1a1e)salty形容词，意为“咸的；含盐的”，是由名词salt加上y构成的，类似的形容词还有tasty，smelly，sunny，cloudy等。Potato chips were invented by mistake.薯条是被无意中发明的。by mistake意为“错误地；无意地”。在此短语中mistake要用单数形式，且前面不能用冠词。【拓展】make a mistake犯错误mistake.for.把错认为The customer was happy in the end.最后顾客满意了。in th
2、e end意为“最后，最终”，相当于at last/finally。eg：They were out of danger in the end.最后他们脱险了。【拓展】in the end不能与of连用，可放在句首，也可放在句末。at the end of.后接地点名词，表示“在的尽头”；后接时间名词，表示“在结束时”。eg：at the end of the road/month在这条路/这个月的尽头by the end of意为“在以前，到为止”，常与将来时态或过去完成时态连用。eg：By the end of last month，we had learnt over ten Engli
3、sh songs.到上个月底为止，我们已经学会了十多首英文歌曲。enough的用法enough作形容词，意为“足够的；充分的”，后接名词；作副词，意为“足够地；充分地”，总放在被修饰的副词或形容词之后。eg：I have enough food to eat.我有足够的食物吃。(修饰名词)The book is easy enough for your children to read.这本书对你的孩子们而言很简单。(修饰形容词)They cant walk fast enough.他们走得不够快。(修饰副词) 一、根据句意选择方框中的单词并用其适当形式填空。1I dont like drin
4、king lemon juice because its too 2The supermarket is usually crowded with lots of on weekends.3Jane likes cookies.They are dry，hard and easily broken (易碎的)4The boy got to the top of the mountain in the 5Dont add too much salt in the soup，or it will be too sourcustomerscrispyendsalty二、单项选择。( )6.The w
5、oman took my bag _ mistake.AforBat Cof Dby( )7.My little sister isnt _ to look after herself.(易错题)Ayoung enough Benough young Cold enough Denough old( )8.The potato chips have been in the paper bag for half an hour.They are not _ any more.Acrispy Bsweet Csalty Dsour( )9.Its 9 oclock now.I must go.It
6、s raining outside.Dont leave _ it stops.(原创题)Awhen Bsince Cwhile Duntil( )10.Please give this book to a boy _ Zhang Ming.Acall Bcalled Ccalling Dto callDCADB三、从方框中选出适当的句子补全对话。A：I have some potato chips.Do you want to eat?B：No，thanks.11._A：What do you mean？Why was it an accident?B：Well，they were inve
7、nted by a cook called George Crum.12._ He ordered a plate of fried potatoes.When the potatoes came，he said they were cut too thick and sent them back to the kitchen.A：So what happened?B：Well，George was angry，so he cut the potatoes very thin，and he cooked them for a long time until they were crispy.A
8、nd he put lots of salt on them so they were really salty.13._A：And?B：14._ He told the other customers about them，and soon everyone was ordering potato chips.A：15._ How interesting!BDACEAHe thought the customer would hate them.BOh，do you know that potato chips were invented by mistake?CAnd the customer loved them and asked for more.DOne day，a customer came into the restaurant where George worked.EAnd we are still eating them today.
