Unit 6 When was it invented 【学习目标】
1、语法：过去式的被动语态
【预习•合作•探究】
1、Potato chips were invented by mistake.
【解析】by mistake错误地；无意中
【拓展】mistake →mistook → mistaken v 错误
make mistakes 放错
make mistakes in 在某方面放错
mistake …f or… 把…误认为…
by mistake 错误地
① He took my English-Chinese dictionary _____ mistake.
A. to
B. by
C. about
D. on
② He often _______ mistakes in spel ling.
A. takes
B. makes
C. has
③ My little brother is always _____.He always makes___.
A .careful; a mistake B. careful; mistakes
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C. careless; mistake
D. careless ;mistakes
2、George wanted to make the customer happy乔治想让顾客高兴【解析1】want v. 想要 = would like
(1) want sth 想要某物 I want an apple.
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(2) want to do sth = would like to do sth 想要做某事①I want ___________(go) swimming.
② Tom wants _____ a job as a language teacher in China.
A. to find
B. finding
C. find
(3) want sb. to do sth= wo uld like to do sth 想要某人做某事【解析2】make +宾语+宾语补足语东升镇高级中学
make sb/sth + adj. 使某人、某物处于某种状态 make you happy
3、The customer was happy in the end. 顾客最后很高兴
【解析】 end n/v 结尾— ending n 结尾
(1) in the end = at last = finally 最后（后面不接of短语）
(2) at the end of…在……尽头（反）at the beginning of 在……开始
（后接时间或地点名词）The bank is at the end of the street.银行在街道的尽头。
松驰(3) by the end of “到……末为止”，后接名词，常与一般将来时或过去完成时连用。 Th ey had planted six thousand trees by the end of last year.
到去年年底为止，他们已种植了六千棵树。
(4)end up doing sth 终止做某事
Have you en ded up _______________(memorize) the new words?
(5) end up with sth 以…而结束
【形成性检测】
1)She likes _______ co okies. They are hard dry and easily broken.
A. salty
B. swe et
C. sour
D. crispy
2)He often ____ mistakes in spelling.
A. takes
B. makes
C. has
3)— David, why are you so excited?
—
My father has made a_________ that he will take me to Tibet next month.
A. face
B. promise
C. Mi stake
4)The man tried several times to start the car, and he succeeded______.
A. in the past
B. in the end
C. at first
D. at once
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