九年级英语单元知识点总结

九年级英语单元知识点系统总结（核心考点+实用技巧）一、关键词汇与短语本单元围绕“学习策略”展开，需重点掌握词汇的词义、词性转换及固定搭配：pronounce(v.)发音→pronunciation(n.)发音；读音（搭配：*correctone’spronunciation*纠正发音）increase(v.)增加；增长→短语：*increase...by...*（增加了…）；*increase...to...*（增加到…）speed(n.&v.)速度；加速→搭配：*atahighspeed*高速；*speedup*加速review(v.&n.)复习；回顾→联想：*preview(v.)*预习二、语法重点：“by+动名词”表方式&现在完成时1.“by+doing”结构（表方式/手段）用于说明“做某事的途径”，常回答*how*引导的问句。例句：*—HowdoyoulearnEnglish?—IlearnEnglishbyreadingaloudeverymorning.*拓展短语：*byaccident*（偶然）；*bymistake*（错误地）2.现在完成时（have/has+过去分词）两种核心用法：①过去动作对现在的影响（标志词：*already,yet,just,ever,never*）：*Ihavealreadyfinishedmyhomework.（现在无需再做）*②过去持续到现在的动作（标志词：*for+时间段,since+时间点/从句*）：*Shehaslivedheresince2010./HehasstudiedEnglishforthreeyears.*三、重点句型解析1.“It’s+adj.+(for/ofsb.)+todosth.”用*for*时，adj.描述“事情”的性质（如*difficult,easy,important*）：*It’simportantforustopracticespeakingeveryday.*用*of*时，adj.描述“人的品质”（如*kind,nice,clever*）：*It’skindofyoutohelpmewithmyEnglish.*2.“The+比较级,the+比较级”（越…，越…）例句：*Theharderyoustudy,thebettergradesyou’llget.*拓展：*Themoreyouread,thefasteryou’llimproveyourreadingskills.*四、写作指导：“学习方法建议信”结构模板：1.开头：点明主题（如*“I’mwritingtosharesomeeffectivewaystolearnEnglish.”*）2.中间：分点讲方法（用*bydoing*结构）：*Firstly,youcanlearnnewwordsbymakingwordcards.Besides,improvinglisteningskillsbywatchingEnglishmoviesisalsohelpful.*3.结尾：鼓励总结（如*“Ihopethesemethodswillworkforyouandmakeyourlearningeasier.”*）---Unit2Ithinkthatmooncakesaredelicious!（节日文化主题）一、文化类词汇与搭配mooncake(n.)月饼；lantern(n.)灯笼；stranger(n.)陌生人→词根：*strange(adj.)*奇怪的；陌生的admire(v.)欣赏；仰慕→搭配：*admiresb.forsth.*（因某事钦佩某人）；*admirethemoon*赏月relative(n.)亲属；亲戚→短语：*closerelatives*近亲；*distantrelatives*远亲二、语法重点：宾语从句&感叹句1.宾语从句（陈述语序+引导词）that引导（表陈述，*that*可省略）：*Ithink(that)mooncakesaredelicious.*语序要求：连接词后用陈述语序（如：*Iaskwhatheisdoing.*而非*whatishedoing*）2.感叹句（What/How引导）What引导：*What+(a/an)+形容词+名词+主语+谓语!*（名词可数时用*a/an*）*Whatabeautifulcity(itis)!/Whatdeliciousfood(itis)!*How引导：*How+形容词/副词+主语+谓语!**Howbeautifulthecityis!/Howfastheruns!*三、写作指导：“介绍传统节日”内容框架：1.开头：点明节日名称与时间（如*“TheMid-AutumnFestivalfallsonthe15thdayofthe8thlunarmonth.”*）2.中间：描述习俗+文化意义（用宾语从句丰富内容）：*Peoplebelievethatadmiringthefullmoononthisdaybringsgoodluck.Familiesalsogettogethertosharemooncakesandstories.*3.结尾：总结节日价值（如*“It’satimetoshowloveforfamilyandpassontraditionalculture.”*）---跨单元核心语法：被动语态（九年级重点）一、结构：be+过去分词（时态通过*be*的形式变化）一般现在时：*am/is/are+done**Englishisspokenallovertheworld.*一般过去时：*was/were+done**ThebookwaswrittenbyLuXun.*含情态动词：*情态动词+be+done**Theworkmustbefinishedtoday.*二、用法场景强调“动作的承受者”（而非执行者）：*Thenewlibrarywasbuiltlastyear.*（重点在“图书馆被建”）执行者不明/无需说明：*Thewindowwasbrokenyesterday.*（无需说“谁打破的”）三、主动变被动的步骤1.原句宾语变被动句主语；2.谓语变“*be+过去分词*”（时态与原句一致）；3.原句主语若需保留，用“*by+主语（宾格）*”置于句末。例句：*Peoplegrowriceinthesouth.→Riceisgrown(bypeople)inthesouth.*---通用学习技巧（词汇+写作）一、词汇记忆策略1.构词法：派生：*happy→unhappy*（否定前缀*un-*）；*use→useful*（后缀*-ful*表“充满…的”）合成：*class+room→classroom*；*black+board→blackboard*2.语境记忆：将单词放入句子/短文（如*“WeeatmooncakesduringtheMid-AutumnFestival.”*）3.联想记忆：同义词（*big-large*）、反义词（*happy-sad*）、同音词（*right-write*）二、写作高分技巧1.结构清晰：开头点题，中间分2-3个论点（用*firstly,besides,finally*连接），结尾升华。2.语法