Unit1-Unit8语法归纳总结2025-2026学年沪教版(五四学制)九年级英语下册

2026-01-31
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沪教版九年级下册unit1-8语法归纳总结 Unit1: Great Explorations 语法核心 —— 结果状语从句(中考考频:★★★★☆) 1、 核心句型 1. so...that...(表 “如此…… 以至于……”) 结构 1:so + 形容词 / 副词 + that 从句 例句:The explorer’s story was so moving that many students were deeply touched.(探险家的故事如此感人,许多学生深受触动。) 关键:副词直接修饰主句动词,从句明确表结果。 结构 2:so + 形容词 + a/an + 单数可数名词 + that 从句 例句:It was so dangerous a journey that only three people completed it.(这趟旅程如此危险,只有三个人完成了。) 转换:= Such a dangerous journey that...(仅单数名词可互换) 结构 3:so + many/few + 复数可数名词 + that 从句 例句:There are so many historical sites along the route that we can’t visit all of them in a week.(沿途有太多历史遗迹,我们一周内无法全部参观。) 结构 4:so + much/little(表数量) + 不可数名词 + that 从句 例句:He had so little food left that he had to ask the locals for help.(他剩下的食物太少,不得不向当地人求助。) 注意:little 表 “小” 时用 such(such a little dog),表 “数量少” 时用 so(so little water)。 2. such...that...(表 “如此…… 以至于……”) 结构 1:such + a/an + 形容词 + 单数可数名词 + that 从句 例句:She is such a knowledgeable guide that everyone likes asking her questions.(她是位如此博学的向导,大家都爱问她问题。) 结构 2:such + 形容词 + 复数可数名词 + that 从句 例句:They found such precious cultural relics that the government set up a protection zone.(他们发现了如此珍贵的文物,政府专门设立了保护区。) 结构 3:such + 形容词 + 不可数名词 + that 从句 例句:The desert has such dry weather that few plants can survive there.(沙漠气候如此干燥,几乎没有植物能存活。) 3. too + 形容词 / 副词 + to do(表 “太…… 而不能……”) 基础结构:too + adj./adv. + to do sth. 例句:The mountain is too high to climb without ropes.(这座山太高,没有绳索无法攀登。) 带逻辑主语:too + adj./adv. + for sb. + to do sth. 例句:The map is too complex for beginners to understand quickly.(这张地图对初学者来说太复杂,难以快速理解。) 4. 形容词 / 副词 + enough + to do(表 “足够…… 能够……”) 基础结构:adj./adv. + enough + to do sth. 例句:The team is experienced enough to handle unexpected difficulties.(这个团队足够有经验,能应对突发困难。) 否定转换:not + adj./adv. + enough + to do = too + 反义词 + to do 例句:He is not strong enough to carry the box. = He is too weak to carry the box.(他不够强壮,搬不动这个箱子。) 二、重点难点(中考易错突破) so 与 such 的核心区别:名词前有 many/much/few/little(表数量)时,只能用 so,不可用 such。 错误:× such many books → 正确:√ so many books too...to... 的特殊情况:当 too 后接 glad/ready/willing 等表积极态度的形容词时,无否定含义,表 “非常…… 愿意……”。 例句:She is too willing to share her exploration experience with us.(她非常愿意和我们分享探险经历。) 结果状语从句的时态呼应:主句为过去时,从句用相应过去时态;表述客观事实时,从句用一般现在时。 例句:He said the journey was so difficult that he might give up.(他说旅途如此艰难,他可能会放弃。) Unit2: Culture Shock 语法核心 —— 状语从句(中考考频:★★★★★) 一、从句分类及核心用法(按中考考察频次排序) 1. 时间状语从句(中考高频) 引导词:when(当…… 时)、while(在…… 期间)、as(随着)、before(在…… 前)、after(在…… 后)、until/till(直到……)、as soon as(一…… 就)、since(自从……) 关键用法: when 可接短暂性 / 持续性动词,从句动作可与主句同时或先后发生。 例句:When she first arrived in the foreign country, she couldn’t understand the local language.(她刚到那个国家时,听不懂当地语言。) while 仅接持续性动词,强调主句动作在从句动作进行中发生。 例句:While they were learning local customs, they made many new friends.(他们在学习当地习俗时,交了很多新朋友。) as soon as 引导的从句用一般现在时表将来,主句用一般将来时。 例句:As soon as the cultural exchange starts, we will introduce our traditional art.(文化交流一开始,我们就介绍传统艺术。) until/till:主句为否定句时,表 “直到…… 才”。 例句:She didn’t adapt to the life there until she learned the local language.(直到学会当地语言,她才适应那里的生活。) 2. 条件状语从句(中考高频) 引导词:if(如果)、unless(除非 = if not)、as long as(只要) 关键用法: 真实条件句:主句用一般将来时,从句用一般现在时表将来。 例句:If you want to avoid culture shock, learn about local customs in advance.(如果想避免文化冲击,提前了解当地习俗。) unless = if not,主句常用否定式。 例句:Unless you respect their traditions, you won’t be accepted. = If you don’t respect their traditions, you won’t be accepted.(除非尊重他们的传统,否则你不会被接纳。) 3. 原因状语从句(中考中频) 引导词:because(因为)、as(由于)、since(既然) 关键用法: because 表直接原因,语气最强,可回答 why 提问。 例句:She didn’t attend the party because she had to prepare for the cultural lecture.(她没参加派对,因为要准备文化讲座。) as 表显而易见的原因,常位于句首。 例句:As the local culture is different, we need to be careful with our behavior.(由于当地文化不同,我们行为上要谨慎。) since 表已知原因,语气委婉。 例句:Since you’ve studied the etiquette, you won’t make mistakes easily.(既然你学过礼仪,就不会轻易出错。) 4. 目的状语从句(中考中频) 引导词:so that(为了)、in order that(为了) 关键用法: 从句常含情态动词 can/could/may/might,表目的。 例句:She learned the local language so that she could communicate with residents.(她学当地语言是为了能和居民交流。) 5. 让步状语从句(中考低频) 引导词:though/although(虽然)、even if/even though(即使)、no matter who/what/where(无论……) 关键用法: though/although 不可与 but 连用,但可与 yet/still 连用。 例句:Although cultural differences exist, we still get along well.(尽管存在文化差异,我们仍然相处得很好。) no matter + 疑问词可与疑问词 + ever 互换(初中阶段仅需掌握基础互换)。 例句:No matter where you travel, follow local rules. = Wherever you travel, follow local rules.(无论去哪旅行,都要遵守当地规则。) Unit3: The Environment 语法核心 —— 比较状语与相似表达(中考考频:★★★★☆) 1、 比较状语 1. 原级比较 肯定结构:as + 原级 + as(和…… 一样) 例句:The air quality in this city is as good as that in the countryside.(这座城市的空气质量和农村一样好。) 关键:比较对象一致,用 that/those 指代前文单数 / 复数名词。 否定结构:not as/so + 原级 + as(不如……) 例句:This new energy car is not so expensive as the traditional one.(这辆新能源车不如传统车贵。) 拓展:可转换为比较级(This new energy car is cheaper than the traditional one.) 强调结构:twice/three times + as + 原级 + as(是…… 的两倍 / 三倍) 例句:The clean water in this reservoir is twice as much as that in the other.(这个水库的洁净水量是另一个的两倍。) 2. 比较级比较(两者之间) 规则变化: 单音节词:加 - er(tall→taller, fast→faster) 以 e 结尾:加 - r(nice→nicer, late→later) 辅 + 元 + 辅:双写尾字母加 - er(big→bigger, hot→hotter) 辅音 + y 结尾:变 y 为 i 加 - er(easy→easier, happy→happier) 多音节词 / 部分双音节词:加 more(important→more important) 不规则变化:good/well→better, bad/badly→worse, many/much→more, little→less, far→farther(距离)/further(程度) 关键用法: 比较级前可加 much/far/even/a little 修饰,表程度。 例句:Planting more trees makes the environment much better.(种更多树让环境好得多。) 两者中较…… 的一个:the + 比较级 + of the two 例句:This plan is the better of the two.(这个方案是两个中较好的一个。) 3. 最高级比较(三者及以上) 规则变化: 单音节词:加 - est(tall→tallest, fast→fastest) 以 e 结尾:加 - st(nice→nicest, late→latest) 辅 + 元 + 辅:双写尾字母加 - est(big→biggest, hot→hottest) 辅音 + y 结尾:变 y 为 i 加 - est(easy→easiest, happy→happiest) 多音节词 / 部分双音节词:加 most(important→most important) 不规则变化:good/well→best, bad/badly→worst, many/much→most, little→least, far→farthest/furthest 关键用法: 最高级前加 the,后接 of/in 短语表范围。 例句:This is the most effective way to reduce pollution in our city.(这是我们城市减少污染最有效的方法。) 副词最高级前的 the 可省略。 例句:Among all students, she speaks most fluently about environmental issues.(所有学生中,她谈论环境问题最流利。) 4. 特殊表达(中考高频) 比较级 + and + 比较级(越来越……) 例句:The environment is getting cleaner and cleaner with people’s efforts.(在人们的努力下,环境越来越干净。) the + 比较级..., the + 比较级...(越…… 越……) 例句:The more we pay attention to waste sorting, the more beautiful our city will be.(我们越重视垃圾分类,城市就越美丽。) 二、相似含义表达(补充中考常考搭配) like(介词,“像…… 一样”) 例句:The environmental protection method here is like that in developed countries.(这里的环保方式和发达国家的一样。) the same as(“与…… 一样”) 例句:The environmental policy here is the same as that of the neighboring city.(这里的环保政策和邻近城市的一样。) (be) different from(“与…… 不同”) 例句:The effect of this new law is different from what we expected.(这部新法律的效果和我们预期的不同。) be similar to(“与…… 相似”) 例句:The ecological system here is similar to that of the nature reserve.(这里的生态系统和自然保护区的相似。) Unit4: Natural Disasters 语法核心 ——It 的用法(中考考频:★★★★☆) 一、it 作代词(基础用法,中考送分点) 1. 指代前文事物 / 动物 例句:A strong earthquake hit the area, and it caused great damage.(一场强震袭击了该地区,造成了严重破坏。) 关键:指代单数可数名词或不可数名词,复数用 they/them。 2. 指代身份不明的人 / 婴儿 例句:—Who is knocking at the door? —It must be the rescue worker.(— 谁在敲门?— 一定是救援人员。) 3. 指代时间 / 距离 / 天气 / 温度等自然现象 指代时间:It’s 7 o’clock, and the typhoon is coming soon.(已经 7 点了,台风很快就到。) 指代距离:It’s 50 kilometers from the city to the disaster-stricken area.(从城市到灾区有 50 公里。) 指代天气:It’s raining heavily, so the rescue work is postponed.(雨下得很大,救援工作推迟了。) 4. 固定句型(中考高频) It’s time for sth.(该做某事了)→ It’s time for the emergency drill.(该进行应急演练了。) It’s time to do sth.(该做某事了)→ It’s time to prepare for the flood.(该为洪水做准备了。) It’s time for sb. to do sth.(某人该做某事了)→ It’s time for the government to take measures.(政府该采取措施了。) It’s the first/second time that 从句(某人第几次做某事)→ It’s the third time she has joined the disaster relief.(这是她第三次参加救灾。) Tip:从句用现在完成时。 It’s + 时间段 + since 从句(自从…… 以来)→ It’s five years since the last earthquake here.(自从这里上次地震已经五年了。) Tip:从句用一般过去时。 二、it 用作形式主语(中考核心) 1. 核心句型 It + be + 形容词 + 主语从句 例句:It is necessary that we learn self-protection in natural disasters.(我们有必要学习自然灾害中的自我保护。) 常用形容词:necessary, important, possible, certain 等。 It + be + 名词词组 + 主语从句 例句:It’s a pity that many people lost their homes in the flood.(很遗憾,许多人在洪水中失去了家园。) 常用名词:pity, shame, fact, wonder 等。 It + be + 过去分词 + 主语从句 例句:It is reported that the rescue team has reached the disaster area.(据报道,救援队已抵达灾区。) 常用过去分词:reported, said, believed, expected 等。 It + be + 形容词 + (for sb.) + 动词不定式 例句:It’s difficult for ordinary people to predict natural disasters.(普通人很难预测自然灾害。) 常用形容词:easy, difficult, hard, important 等。 It + be + 形容词 + of sb. + 动词不定式 例句:It’s brave of the rescuers to save people in danger.(救援人员在危险中救人真勇敢。) 常用形容词:kind, brave, polite, foolish 等(表人物品质)。 三、it 用作形式宾语(中考中频) 1. 核心句型:动词 + it + 宾语补足语 + 真正宾语(不定式 / 从句) 例句 1:We find it important to learn disaster prevention knowledge.(我们发现学习防灾知识很重要。) 例句 2:She made it clear that she would join the rescue team.(她明确表示会加入救援队。) 常用动词:think, find, feel, make, believe 等。 Unit5: Sports 语法核心 —— 时态与语态(中考考频:★★★★★) 1、 核心时态 1. 一般现在时(基础) 结构:主语为三单时动词加 - s/-es,其余用原形。 用法: 经常性 / 习惯性动作:He plays basketball every weekend.(他每周周末打篮球。) 客观事实 / 真理:Regular exercise improves physical health.(规律锻炼改善身体健康。) 时间状语:every day/week, usually, often, always 等。 2. 一般过去时(基础) 结构:动词过去式(规则加 - ed,不规则需记忆)。 用法:过去某个时间发生的动作 / 状态:They held a sports meeting last month.(他们上个月举办了运动会。) 时间状语:yesterday, last week, ago, in 2023 等。 3. 一般将来时(核心) 结构:will + 动词原形 /am/is/are going to + 动词原形。 用法对比(中考易错): will:表客观预测或临时决定→ He will take part in the marathon next year.(他明年会参加马拉松。) be going to:表计划或根据迹象预测→ It’s cloudy. It’s going to rain.(天阴了,要下雨了。) 时间状语:tomorrow, next week, soon 等。 4. 现在进行时(核心) 结构:am/is/are + 动词 - ing。 用法: 此时此刻正在进行的动作:They are practicing football now.(他们现在正在练足球。) 现阶段正在进行的动作:She is preparing for the swimming competition these days.(这些天她在准备游泳比赛。) 时间状语:now, at the moment, these days 等。 5. 现在完成时(难点) 结构:have/has + 动词过去分词。 用法: 过去动作对现在的影响:He has won three gold medals.(他赢得了三枚金牌。) 过去持续到现在的动作 / 状态:She has been a professional athlete for five years.(她成为职业运动员五年了。) 时间状语:already, yet, just, for + 时间段,since + 时间点等。 6. 过去进行时(低频) 结构:was/were + 动词 - ing。 用法:过去某个时刻 / 时间段正在进行的动作:At this time yesterday, she was running on the track.(昨天这个时候,她正在跑道上跑步。) 时间状语:at 8 o’clock yesterday, while 引导的从句等。 二、被动语态(核心,按时态排序) 1. 被动语态结构:be + 动词过去分词(be 随时间变化) 2. 常用时态的被动语态(中考高频) 一般现在时:am/is/are + 过去分词→ Basketball is played by people of all ages.(篮球被各个年龄段的人喜爱。) 一般过去时:was/were + 过去分词→ The sports meeting was held successfully last week.(上周运动会成功举办。) 一般将来时:will be + 过去分词 /am/is/are going to be + 过去分词→ The new sports center will be completed next year.(新体育中心明年建成。) 现在进行时:am/is/are being + 过去分词→ The sports facilities are being repaired now.(体育设施现在正在维修。) 现在完成时:have/has been + 过去分词→ Many records have been broken in this competition.(这次比赛中许多纪录被打破。) 情态动词 + be + 过去分词→ Sports equipment must be checked regularly.(体育器材必须定期检查。) 3. 被动语态用法(中考易错) 强调动作承受者:The gold medal was won by a 16-year-old athlete.(金牌被一位 16 岁的运动员获得。) 不知道动作执行者:The sports meeting was canceled because of bad weather.(运动会因天气不好被取消。) Unit6: Caring for Your Health 语法核心 —— 宾语从句(中考考频:★★★★★) 一、三大核心要素(中考必考) 1. 连接词 that:引导陈述句,无含义,常可省略。 例句:The doctor told me (that) I should exercise more.(医生告诉我应该多锻炼。) 关键:多个并列从句时,第二个及以后的 that 不可省→ She said (that) she would walk more and that she would drink more water.(她说她会多走路,还会多喝水。) if/whether:引导一般疑问句,表 “是否”,不可省略。 例句:I wonder if/whether staying up late is bad for health.(我想知道熬夜是否对健康有害。) 中考特殊场景(仅用 whether): 从句后接 or not→ He asked whether he should take the medicine or not.(他问是否应该吃药。) 从句作介词宾语→ It depends on whether we can keep a balanced diet.(这取决于我们是否能保持均衡饮食。) 特殊疑问词:what/who/when/where/why/how 等,引导特殊疑问句,不可省略,在从句中作成分。 例句 1:Do you know what we should eat to keep healthy?(你知道我们该吃什么保持健康吗?——what 作宾语) 例句 2:He asked why sleep is important.(他问为什么睡眠很重要 ——why 作状语) 2. 语序(中考易错点) 必须用陈述语序(连接词 + 主语 + 谓语),不可用疑问语序。 正确:Could you tell me where the nearest hospital is?(你能告诉我最近的医院在哪里吗?) 错误:× Could you tell me where is the nearest hospital? 3. 时态呼应(中考核心) 主句为现在时 / 将来时,从句按实际语境用任意时态→ She knows regular exercise is good for health.(她知道规律锻炼对健康有益。) 主句为过去时,从句用相应过去时态(一般过去时 / 过去进行时 / 过去将来时 / 过去完成时)→ He said he had a physical examination the day before.(他说他前一天做了体检。) 从句表客观真理,无论主句时态如何,从句用一般现在时→ The teacher told us drinking enough water is good for kidneys.(老师告诉我们多喝水对肾脏有益。) 二、特殊用法(中考拓展) 1. 否定转移 主句主语为第一人称,谓语为 think/believe/suppose 等时,否定词转移到主句。 例句:I don’t think smoking is allowed in the hospital.(我认为医院里不允许吸烟。) 原句:I think smoking is not allowed in the hospital.(较少使用) 2. 形式宾语 it 宾语从句后有宾语补足语时,用 it 作形式宾语,从句置后。 例句:We find it important that we should have a healthy lifestyle.(我们发现拥有健康的生活方式很重要。) 学科网(北京)股份有限公司 $

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Unit1-Unit8语法归纳总结2025-2026学年沪教版(五四学制)九年级英语下册
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Unit1-Unit8语法归纳总结2025-2026学年沪教版(五四学制)九年级英语下册
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Unit1-Unit8语法归纳总结2025-2026学年沪教版(五四学制)九年级英语下册
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