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吉林省2026-2027学年九年级上册人教版英语Unit 3 Smart Learning 重难点单词句法讲解与拓展课件
展开 这是一份吉林省2026-2027学年九年级上册人教版英语Unit 3 Smart Learning 重难点单词句法讲解与拓展课件,共22页。
Unit 3 Smart Learning 重难点讲解与拓展2026-2027学年教版九年级上重点单词重点短语☑ look up 查阅;检查 ☑ build up 增加;加强;创建☑ in addition 另外;此外 ☑ in general 总的来说;通常☑ put off 推迟;拖延 ☑ take advantage of 利用☑ come across (偶然)遇见;发现 ☑ in part 在某种程度上;部分地☑ open up 打开;开放 ☑ step by step 逐步地;循序渐进地☑ I find it difficult to follow conversations. 我发现很难跟上对话。☑ Thanks for having me! 谢谢你邀请我!☑ What do you mean by that? 你这么说是什么意思?☑ Oh, you must spend a lot of time studying! 哦,你一定花了很多时间在学习上!☑ You will improve your reading speed if you read a lot. 如果你多读书,你的阅读速度会提升。☑ When I was a child, my mother sat me on her knee, told me stories, and taught me how to read. 当我是个孩子时,我妈妈让我坐在她的膝盖上,给我讲故事并教我如何阅读。重点句子1. dictionary(n. 词典)变y为i, +-es → dictionaries(复数) shelf(n. 架子;隔板)变f为v, +-es → shelves(复数) ee变e → sped(过去式,过去分词)2. speed(v. 加速) +-ed → speeded(过去式,过去分词)3. active(adj. 积极的)+-ly(副词后缀)→actively(adv. 积极地) correct(adj. 正确的)+-ly(副词后缀)→correctly(adv. 正确地) efficient(adj. 效率高的)+-ly(副词后缀)→efficiently(adv. 效率高地) recent(adj. 最近的)+-ly(副词后缀)→recently(adv. 最近地)4. learn(v. 学习)+-er(表示人的名词后缀)→learner(n. 学习者)、 grow(v. 成长;增加)+-th(名词后缀)→growth(n. 成长;增加) guide(v. 指导)去e, +-ance(名词后缀)→guidance(n. 指导) add(v. 添加,增加)+-ition(名词后缀)→addition(n. 添加;加法) pronounce(v. 发音)去第一个n后的字母o, e变i, +-ation(名词后缀)→pronunciation(n. 发音)5.enjoy(v. 享受……的乐趣)+-able(形容词后缀)→enjoyable(adj. 有乐趣的;使人快乐的)6.summary(n. 总结)变y为i, +-(i)ze(动词后缀)→summarize(v. 总结)重点词形变化辅音字母 + y 结尾:变y为i,加-esf 结尾:变f为v,加-es形容词变副词(后缀 -ly)名词变动词(后缀 -ize)动词变形容词(后缀 -able)动词变名词(名词后缀)er(表人) th(表抽象事物 )ance(动词去e再加后缀) ition特殊拼写变形+ -ation 重点词法1 look up 查阅;检查(1)look up 意为“查阅,检查”时,其宾语的位置有两种情况:例:To find changes in your city, you can look up some information online. 为了发现你所在城市的变化,你可以在网上查阅一些信息。 If there are words you do not understand, look them up in the dictionary. 如果你有不理解的单词,可以在词典里查阅一下。(2)look up 还可意为“抬头看”。 例: I looked up and saw several clouds in the sky. 我向上看,看到天空中有几片云彩。含有look 的其他常见短语:look at 看 look after 照顾look around 环顾 look back 向后看;回顾look down 向下看 look down on/upon 轻视look for 寻找 look out 小心look over 迅速地检查 look through 浏览;翻阅重点词法2.by doing sth 通过做某事在句子中作状语,表示方式、方法等,by在此结构中有“通过,借助,用(某种方式或方法)”等含义。此外,“by + 动词-ing形式”常用来回答how引导的特殊疑问句。例:Mr Green makes a living by teaching. 格林先生以教书为生。 —How do you learn maths? 你怎样学习数学? —I learn by doing exercises. 我通过做练习学习。重点词法?快速记忆口诀:朗读出声用aloud; 名词前面用loud; 吵闹喧哗loudly; 口语比较用loud。3.辨析 aloud、loud 和 loudly没有比较级和最高级重点词法4. suit v.适合;有利于 n.套装 v. 适合;有利于suit (尤指服装、颜色等)相配;合身 n. 套装例句:You should read books that suit your English level. 你应该读适合你英语水平的书。 I don’t think this coat really suits me. 我觉得这件大衣不大适合我穿。 Blue suits you. You should wear it more often. 你适合穿蓝色。你该多穿蓝色衣服。 He is dressed in a formal black suit. 他穿着一套正式的黑色西装。suitable是 suit 的形容词形式,由动词 suit 和后缀-able构成,意为“合适的;适宜的”。例句: The house is not really suitable for a large family. 这所房子并不适合大家庭居住。延伸作及物动词,不用于进行时重点词法5.mean〔及物动词〕①意思是 表示一个人的言论或行为、某一标志或词语的意思所指,其后常接名词或宾语从句。例句:What do you mean? 你(的话)是什么意思? You mean that you can’t come tomorrow? 你的意思是你明天不能来了?②意味着 mean doing sth 意味着做某事例句: My new job will mean travelling all over the world. 我的新工作将意味着世界各地到处跑。③意欲;打算 mean to do sth 意欲 / 打算做某事例句: I didn’t mean to upset you. 我没想让你伤心。拓展meaning〔名词〕意义;意思the meaning of…… ……的意思例句:The meaning of her words is clear. 她的话意思很清楚。重点词法6. be afraid of 害怕……后面可接名词、代词或动词 -ing 形式。be afraid of sb/sth 害怕某人/某物be afraid of doing sth 害怕做某事Nobody will be afraid of this tiny spider. 没有人会害怕这只小蜘蛛。He is afraid of failing the exam. 他害怕考试不及格。拓展be afraid to do sth“害怕做某事”,与be afraid of doing sth 意思相同。例句:His sister is afraid to speak in public. 他的妹妹害怕在公共场合发言。重点词法7. find it + 形容词 + to do sth 发现做某事是……的find后接复合宾语,其中it在本结构中作形式宾语,真正宾语是后面的动词不定式 to do sth,形容词在句中作宾语补足语。注意:有同样用法的动词还有 think, feel, consider 等。例句:I find it helpful to read the textbook before the exam. 我发现在考试前读课本很有帮助。拓展“find it + 形容词 + to do sth”可以转换为“find it + be + 形容词 + to do sth”这一结构。后者为含有宾语从句的复合句,其中it在宾语从句中作形式主语,真正主语是后面的动词不定式,形容词在宾语从句中作表语。例句:I find it boring to listen to the speech.= I find it is boring to listen to the speech. 我发现听那个演讲很无聊。重点词法8. step by step 逐步地;循序渐进地此处用作方式状语。其中介词by表示连续或反复,意为“(一个)接着(一个);(一个)又(一个)”。例句:I am not rushing things and I’m taking it step by step. 我没有急于求成,而是逐步推进。 Step by step, he knew the importance of it. 渐渐地,他知道了它的重要性。拓展类似的短语:one by one 一个接一个word by word 一个字一个字地year by year 年复一年,逐年little by little 一点一点,逐渐重点词法9. build up ①增加;加强 表示增强或积累,强调渐进过程。例句:Regular exercise helps to build up strength. 定期锻炼有助于增强体力。 Exercise helps build up muscle strength. 锻炼有助于增强肌肉力量。②创建 表示逐步建立或开发。例句:He built up a successful business over the years. 他多年来逐步建立了一家成功的企业。重点词法10. put off 推迟;拖延put off 意为“推迟;拖延”,可接名词、代词和动词-ing形式作宾语。例句:We have to put off the sports meeting because of the heavy rain. 因为大雨,我们不得不推迟运动会。 But if you keep putting them off, they can snowball. 但如果你继续拖延,它们会如滚雪球般不断增加。 Cathy often puts off working on her project to the last day. 凯茜经常把她的项目推迟到最后一天做。代词作宾语时,需放在put和off之间其他常见的put短语put away—把……收起来 put back—把……放回put down—放下;写下 put on—增加(体重);穿上;上演put out—熄灭;扑灭 put up—搭建;张贴;举起put one’s heart into 全神贯注于延伸重点词法11. correct①〔形容词〕正确的;恰当的相当于right,其副词形式为correctly。例句:I can tell you the correct answer. 我可以告诉你正确答案。 He answered the teacher's question correctly. 他正确地回答了老师的问题。②〔及物动词〕改正例句: You must correct your mistakes. 你必须改正自己的错误。重点词法12. suggest v.建议;提议suggest 作及物动词,其后可跟名词、代词、动词-ing形式或从句作宾语。例: At lunchtime, Sofia suggested fish and chips, and I found it delicious. 午餐时间,索菲亚建议吃炸鱼薯条,我觉得很好吃。 Peter’s mother even suggests giving pocket money to children as early as when they are four. 彼得的母亲甚至建议在孩子们四岁的时候就给他们零花钱。 He suggested that learners should read and take notes very carefully, then summarize the key points. 他建议学习者仔细阅读并做笔记,然后总结要点。延伸 例句:He gave me two good pieces of advice yesterday. He advised me to buy a new computer at once and suggested throwing away the old one. I took the two suggestions. 他昨天给了我两条好建议。他建议我立刻买一台新电脑,并且还建议扔掉这台旧电脑。我接受了这两条建议。重点词法13. no matter what 无论什么no matter“无论;不论”,常与what, who, when, where, how等疑问词连用,引导让步状语从句。在从句中,常用一般现在时表示将来,从句可放在主句前或主句后。例句:No matter what happens, stay calm. 不管发生什么,都要保持冷静。 No matter where you are, don’t forget you are Chinese.无论你在哪里,都不要忘记你是中国人。 No matter who you are, you must obey the rules.无论你是谁,都必须遵守规则。“no matter + 疑问词”结构相当于“疑问词 + -ever”。no matter how = however(无论怎样) no matter what = whatever(无论什么)no matter when = whenever(无论何时) no matter where = wherever(无论在哪里)延伸重点词法14. 常见的“in+名词”构成的短语in+名词 例句: In addition, they can learn about the local customs. 此外,他们还可以了解当地的风俗习惯。This means, in part, believing in yourself.这在一定程度上意味着相信自己。Going somewhere in person and watching, you will get something unexpected. 亲自去某个地方看看,你会得到一些意想不到的东西。in addition 另外;此外in charge 负责;主管in common 共同的;共有的in danger 处于危险中in fact 事实上;实际上in part 在某种程度上;部分地in person 亲自;亲身in time 及时in trouble 处于困境中重点词法12. advantage n.优势;优点advantage n.例句: Being tall gave him an advantage over the other players. 他个子高,比其他运动员有优势。One great advantage of this metal is that it doesn’t rust. 这种金属最大的一个优点就是不生锈。Take advantage of the best tools and resources to learn wisely and efficiently. 利用最好的工具和资源,明智而高效地学习。Every seating arrangement has its own advantages and disadvantages. 每种座位安排都有其优缺点。含义 — 优势;优点常见搭配 — take advantage of 利用反义词 — disadvantage n. 劣势;缺点重点句法1. The+比较级…, the+比较级…The more you read, the faster and better you ’ll become. 你读得越多,你就会读得越快越好。用比较级表示“越来越……”①单音节和部分双音节形容词或副词用“比较级+and+比较级”表示“越来越……”;②部分双音节和多音节形容词或副词用“more and more+形容词/副词原级”表示“越来越……”。拓展“The+比较级…, the+比较级…”句型用于强调两件事或两种情况之间的相互影响,意为“越……,就越……”。例句:The more information it studies, the better it can do its job.它研究的信息越多,它的工作就做得越好。The more careful you are, the fewer mistakes you’ll make.你越仔细,你犯的错误就越少。比较级主语谓语比较级主语谓语重点句法2. if 引导条件状语从句You will improve your reading speed if you read a lot. 如果你多读书,你的阅读速度会提升。。if 作连词,还可意为 “是否”,用于引导宾语从句。如:I wonder if I should wear a coat or not. 我不知道该不该穿外套。拓展在本句中,if 是连词,意为 “如果” ,if 引导的从句说明主句动作发生的条件。if 引导条件状语从句时,如果主句时态是一般将来时,从句时态要用一般现在时,可巧记为 “主将从现”例句: However, if your anxiety becomes so great, it will influence your performance in the test. 然而,如果你的焦虑变得很大,它会影响你在考试中的表现。从句状语主句谓语主句宾语主句主语从句主语从句谓语当主句动作发生在将来,以下情况往往也遵循 “主将从现” 原则:①when 引导时间状语从句;②as soon as 引导时间状语从句;③unless 引导条件状语从句。重点句法“find it + 形容词 + to do sth”可以转换为“find it + be + 形容词 + to do sth”这一结构。后者为含有宾语从句的复合句,其中it在宾语从句中作形式主语,真正主语是后面的动词不定式,形容词在宾语从句中作表语。例句:I find it boring to listen to the speech.= I find it is boring to listen to the speech. 我发现听那个演讲很无聊。拓展3.find it + 形容词 + to do sth 发现做某事是……的find后接复合宾语,其中it在本结构中作形式宾语,真正宾语是后面的动词不定式 to do sth,形容词在句中作宾语补足语。注意:有同样用法的动词还有 think, feel, consider 等。例句:I find it helpful to read the textbook before the exam. 我发现在考试前读课本很有帮助。
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