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1、第二十讲 九年级 Units 910,1Potato chips were invented_by_mistake. 薯片是无意中被发明的。(Unit 9) (1)invent是动词，意为“发明”。 He has invented a new way of making silk. 他发明了一种制造丝绸的新方法。 【辨析】 invent与discover invent意为“发明”，表示发明原先不存在的东西，诸如机器或工具等。 discover意为“发现”，表示发现原来已存在但未为人所知的东西。,Gilbert discovered electricity，but Edison invented
2、 the electric light bulb. 吉尔伯特发现了电，而爱迪生发明了电灯。 【拓展】 invention n发明；创造 inventor n发明家；创造者,(2)by mistake 意为“错误地；无意地”。与此类似的结构有by accidentby chance，意为“偶然地；意外地”。mistake是名词，常见词组有make (a few) mistakes 犯(若干)错误。 I did it by mistake.我一时搞错才这样做了。 2It_is_believed_that on December 21st,1891，the first basketball game
3、 in history was played. 人们认为历史上的第一场篮球比赛是在1891年12月21日举行的。(Unit 9) It is believedthat从句是英语中常用句型，这个句型的意思为“据认为；人们认为”，相当于people believe that.。,【拓展】 此类用法还有Its said that.据说；Its thought that.人们认为；Its known that.众所周知；Its reported that.据报道；Its suggested that.据建议 Its said that he saved two boys from the river.
4、 据说他从河里救了两个男孩。 3By the time I got outside, the bus had already left. 当我出去时，公共汽车已经离开了。(Unit 10) 本句是过去完成时，它表示在过去某一时间或动作之前完成的动作或状态，其构成是“主语had动词过去分词”。在由by the time, when, before, after, until等连接的复合句中，如果主句谓语,和从句谓语表示的过去动作是在不同时间发生的，那么先发生的动作用过去完成时。 When I came in, he had finished his homework. 当我进来时，他已完成作业了
5、。 By the time I got there, the train had left. 当我到那儿时，火车已离开了。 4When she got to school，she realized she had left her backpack at_home. 当她到达学校时，她意识到她把书包忘在家里了。(Unit 10),leave在句中用作动词，意为“留下；丢下；落下”，所用句型leave sth.地点，意为“把某物忘在某地”。 He left his umbrella on the train. 他把伞忘在火车上了。 【拓展】 leave for离开前往 leave sb. alo
6、ne让某人独自呆着 leave off停止；结束 leave behind 不带走；丢下 be on leave休假 leave about乱放(东西) 【辨析】 leave与forget forget意为“忘记”，forget sth.意为“忘记某事”；,forget to do sth.意为“忘了去做某事”。 I forgot to turn off the lights when I went out. 我出门时忘记关灯了。 leave sth.地点 意为“把某物落在某处”。 5Welles was so convincing_that hundreds of people believ
7、ed the story，and panic set off across the whole country. 韦尔斯讲得如此令人信服，以至于成百上千的人都相信这件事是真的，从而引发了全国范围的恐慌。(Unit 10) so.that.意为“如此以至于”，常用来引导结果状语从句。,The little girl was so tired that she couldnt walk further. 那个小女孩太累了，以至于不能再往前走了。 【拓展】 so.that.和such.that. so.that.中的so是副词，其后只能跟形容词或副词，如果跟名词只能用“soadj.a(an)可数名词
8、单数that从句”形式。 such.that.中的such是形容词，后跟名词或名词短语，可用“sucha(an)adj.可数名词单数that从句”或“suchadj.可数名词复数/不可数名词that从句”形式。 It is so good a book that we all like reading it. It is such a good book that we all like reading it.,那是一本如此好的书，以至于我们都爱读。 如果名词前有many，much，little，few时，常用so，而不用such。 I bought so many books that I
9、couldnt wait to read them. 我买了很多的书，以至于我迫不及待地想去读。 注意：下列三个句式可以相互转化。 soadj./advthat否定句 tooadj./advto do sth. .notadj./advenough to do sth.,6She was thrilled，because she really wanted to get married. 她很激动，因为她真的想结婚。(Unit 10) marry一般用作及物动词，可作“娶”讲；也可作“嫁”讲，其后直接跟宾语，不能说marry with sb.。 She married a man with a
10、 lot of money. 她嫁给了一个很有钱的人。 She married her daughter to a doctor. 她把女儿嫁给了一个医生。,【拓展】 get married意为“结婚”，表示动作，不能与表示一段时间的时间状语连用。 When did she get married？她什么时候结婚的？ be married意为“结婚”，表示状态，能与表示一段时间的时间状语连用。 They have been married for five years. 他们结婚已经五年了。 相同点：二者都可以和介词to连用，但不能接with。,九年级(910单元) (训练时间：60分钟 分值
11、：100分),基础知识过关 一、根据句意及汉语提示完成句子(9分) 1He has _ (发明) a new way of making silk. 2She _(尝)the soup and sees if it needs more salt. 3We all know that there are 100 years in a _ (世纪) 4The boys were _(投)stones into the river when I passed there. 5The children _ (冲)out of the classroom at the end of their les
12、son.,invented,tastes,century,throwing,rushed,6Make sure to _ (锁上)the door before you leave the classroom. 7The teacher asked who _(打破)the window last night. 8The sun _ (升起)in the east and sets in the west. 9After the match most of us felt _(筋疲力尽的) 二、根据汉语提示完成句子(16分) 1汤姆一定是弄错了才拿了你的字典。 Tom must have ta
13、ken your dictionary _.,lock,broke,rises,exhausted,by mistake,2根据今天的报纸，下星期将有冷天气。 _ todays newspaper, we shall have cold weather next week. 3如果你撞到某人，你应该说“对不起”。 If you _ somebody, you should say “Im sorry.” 4哪里工作艰苦，他们就出现在哪里。 They _ wherever the work is difficult. 5机器坏了。我将找人帮我修理一下它。 The machine _. Ill a
14、sk someone to help me repair it.,According to,knock into,show up,broke down,6那种鞋我们只有小号的了，大号的全卖完了。 We have those shoes in small sizes only，weve _ all the bigger ones. 7只有用这种方法你才能赶上其他的同学。 _ _ _ _ _. 8即使下雨，他还是会准时来的。 _ _ _ _ _. 三、用方框中所给词组的适当形式填空(10分),sold out,You can catch up with the other students onl
15、y in this way,He will come on time even though it rains,1The teacher will _ all the students _ six groups. 2My grandfather is _ ninety years old. 3Many young people _ becoming popular singers in the future. 4Its dangerous to skate on the river in winter because you may _ it. 5During this summer vacation，Im going to visit my aunt and live with her for _. 综合能力提高 一、单项选择(10分),divide,into,more than,dream of,fall into,some tim
