Unit 4 I used to be afraid of the dark.知识精讲Period 11.She was never brave enough to ask questions.她从来都没有勇气去问问题。enough 作副词，意为“足够地，充分地”，用来修饰形容词或副词，一般置于被修饰词之后。【学以致用】He runs fast /quickly enough. 他跑得足够快。【拓展】enough 还可用作形容词，意为“足够的”，在句中作定语修饰名词，可放于名词前面或后面。 【学以致用】 ( A ) There are __________for them all. A. enough seats B. food enough C. seat enough D. enough food 2. It’s been three years since we last saw our primary school classmates. 自从上一次见到我们的小学同学已经有三年了。(1)“It’s been + 一段时间 +since+ 从句”，意为“自从……以来已经有多长时间了”，还可表示为“It is + 一段时间 + since + 从句” 。【学以致用】自从我开始学英语已经有5年了。It has been /is 5 years since I began tolearn English. (2)since此处用作连词，意为“自从”。主句常用完成 时态，且动作需用延续性动词。since 后接从句，该从句用 一般过去时态。【学以致用】①她自从来这所学校就教我们英语了。She has taughtus English since she came to this school. ( B )②My uncle has been in the army ___________he was twentyyears old. 第 1 页


A. for B. since C. until D. after【拓展】since 还可作介词，意为“自从……以来”，后接表示过去时间点的词，如two years ago,1988,last month等。【学以致用】他在那儿已经工作10年了。He has worked there since 10 years ago . Period 2一、语法：used to的用法。used to 表示过去的习惯动作或状态，现在已不再发生或不存在，其中to 为不定式符号，后接动词原形。【教材典句】1.—Mario,you used to be short,didn’t you? 马里奥，你过去很矮，是吗?—Yes,I did. 是的，我过去很矮。2. Paula used to be really quiet. 葆拉过去真的很安静。3. —Did he use to wear glasses? 他过去戴眼镜吗?—Yes,he did./ No,he didn’t. 是的，他过去戴眼镜。/不，他过去不戴。4. She didn’t use to like tests. 她过去不喜欢考试。以上均为关于used to 用法的句子，句1为used to的反意疑问句，句2是陈述句，句3是一般疑问句及其答句，句4为否定句。【拓展】 be /get /become used to doing sth. 意为“习惯于做某事”。 be used to do/be used for doing sth. 意为“被用来做某事”。【学以致用】( A )1. She _______live with her grandparents,but she doesn’t now. A. used to B. is used to C. was used to D. used( C )2. Jenny _______to be heavy. Now she is a little thin. A. use B. uses C. used D. using第 2 页


( A )3. Lucy used to go to bed late,_______she?A. didn’t B. doesn’t C. hadn’t D. isn’t ( A )4. Tom _______Coke,but now he _______milk. A. used to drink; is used to drinking B. used to drinking; is drinkingC. is used to drinking; used to drink D. is used to drink; is drinking( B )5. Wood__________make desks. A. used to B. is used to C. is used for D. is use to二、教材重难点解析。1.However, too much attention can also be a bad thing.然而，太多的关注也可能成为坏事。【辨析】too much,much too 与too manytoo much 意为“太多”， 后接不可数名词; much too 意为“实在太”，修饰形容词或副词;too many 意为“太多”，修饰可数名词的复数形式。【学以致用】(1)The book is much too dear. (2)There is too much noise in the classroom. (3)There are too many passengers on the bus. 2. Only a very small number of people make it to the top.只有极少数的人能攀上顶峰。【辨析】a number of 与 the number of(1)a number of + 可数名词的复数 ,意为“许多的”，作主语时，谓语动词用复数形式；(2)the number of + 可数名词的复数 ,意为“……的数目”，作主语时，谓语动词用单数形式。第 3 页


【学以致用】( A )There__________ a number of books on science in our schoollibrary,and in these years the number of them __________growinglarger and larger. A. are; is B. is; are C. have; are D. has; has Period 31.It is hard to believe that he used to have difficulties inschool.很难相信他过去在学校有许多困难。It is hard to believe that + 从句，表示“很难相信……”。it是形式主语，that 后面的从句是真正主语。【学以致用】 很难相信她只有9岁。It’s hard to believe that she’s only nine. 2.Li Wen’s unhappiness began to influence his schoolwork.李文的不快乐开始影响他的功课。 influence 此处作动词用，意为“影响”。【学以致用】他老师的话影响了他的一生。His teacher’s words influenced /have influenced him for all his life. 【拓展】 influence 还可用作名词，意为“影响，作用。常用短语：have (an) influence on sb.，意为“对某人有影响”。【学以致用】他的想法对我的影响极大。His idea had /has a great influence on me. 3. She advised them to talk with their son in person .她建议他们亲自和他们的儿子谈一谈。 (1)advise sb. to do sth. 意为“建议某人做某事”。【学以致用】老板建议他尽快离开。The boss advised him to leave as soon as possible. 【拓展】advise doing sth. 意为“建议做某事”。第 4 页


【学以致用】他建议早动身。He advised starting /setting of early. (2)in person 意为“亲身；亲自”。【学以致用】 我将亲自去取它。I will go to fetch it in person. 第 5 页