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Unit 9 When was it in 【学习目标】：复习运用一般过去时的被动语态。 学习掌握要求四会的单词：crispy, salty, sour, by mistake, sprinkle3、学习有关一些食物味道的词汇，并就某种味道想出相对应的食物名称。 4、进行听力训练，归纳信息，了解薯片的发明历史。 【课前热身】 预习检测：翻译下列短语1.薯条 2.偶然地、意外地 3.错误地 4.足够咸 5.一个叫吉姆的厨师 6. 撒在。。。的上面 7.最后、终于 8.甜的 9.咸的 10.酸的 11脆的，易碎的 【知识点拨】by mistake 错误地 do sth. by mistake He took a bus by mistake. I took your bag by mistake. Potato chips were invented by mistake.by accident 偶然地I met an old friend by accident at the bus stop. 3.sprinkle…on…在。。。。上撒。。。。。。 Sprinkle……..with………把。。。。。撒在。。。。。上 Eg They are sprinkling sand on the road. They are sprinkling the road with sand.【达标检测】Complete the passage without the books. | 
