让步和原因状语从句-2025-2026学年九年级英语下册语法重难点精讲（沪外版）

9年级沪外版 【寒假专版】 让步和原因状语从句精讲 寒假专版 【语法专题】让步和原因状语从句专项突破 初中沪外版9年级 语法精讲 语法概述：让步状语从句表示”虽然、即使”等转折条件，原因状语从句表示”因为”等因果关系， 两者皆用于补充说明主句动作发生的条件或原因。 重难点讲解 重难点一：让步状语从句的引导词及用法区别讲解： 让步状语从句表示”尽管”虽然”，常用引导词有although/though(虽然)、even if/even though(即使)、as(尽管，需倒装)等。 although/though:两者可互换，不能与but连用，但可与yet/still连用。 even if/even though:强调假设或事实的让步，语气强于although。 s:引导让步从句时需将表语、状语或动词原形置于句首，主谓倒装。 例句： -Although it rained heavily,we still went hiking.(尽管雨下得很大，我们还是去徒步了。) -Even if you don't agree,,you should listen to others'opinions..(即使你不同意，也应该听听别人的意 见。) -Young as he is,.he knows a lot about history.(尽管他年轻，但他对历史很了解。) 真题再现： 1.(2024上海浦东区期中，沪外版)she is only12,she has read more than 100 books. A.Because B.Although C.If D.When 答案：B解析：句意为”尽管她只有12岁，但她已经读了100多本书”，表示让步关系，用 although。 2.(2023江苏苏州月考，沪外版)_he was very tired,.he continued working till midnight. A.Even though B.Because 9年级沪外版 【寒假专版】 让步和原因状语从句精讲 C.So D.But 答案：A 解析：”很累”与”继续工作”为让步关系，even though表”即使”，符合语境。 重难点二：原因状语从句的引导词及逻辑关系讲解： 原因状语从句表示”因为，常用引导词有because（直接原因，回答why)、since(既然，己 知原因)、as(由于，语气较弱)、now that(既然，强调已知事实)。 -because:语气最强，可用于强调句(Itis.that..),不能与so连用。 since/as:引导的从句常位于句首，说明明显的原因。 now that:相当于since,口语中常用，意为”既然”。 例句： -I didn't go to school because I was ill..(我没上学是因为生病了。) ,Since everyone is here,let's start the meeting.(既然大家都到了，我们开始开会吧。) -As the weather is fine,we decided to have a picnic.(由于天气好，我们决定去野餐。) 真题再现： 1.(2024浙江宁波期末，沪外版)-Why did you late for class? -I missed the early bus. A.Because B.Since C.As D.Now that 答案：A解析：间句用why提问，答句需用because直接回答原因。 2.(2023 安徽合肥期中，沪外版)_you have finished your homework,you can watch TV for a while. A.Because B.Now that C.If D.Though 答案：B解析：”已经完成作业”是已知事实，用now that表示”既然”，引导原因状语从句。 重难点三：让步与原因状语从句的区分及易错点讲解： 1.区分标志：让步从句表示”转折性原因”（尽管A,仍然B),原因从句表示”直接原因”（因为 A,所以B)。 2.常见错误： -误用because回答非why引导的问句（如用since/as更合适）。 -混淆although与because的逻辑关系（如将”虽然…但是”误译为”因为…所以”)。 2 9年级沪外版 【寒假专版】 让步和原因状语从句精讲 例句： ·(错误)Because he is poor,.he is happy.(逻辑矛盾，应为让步关系) ·（正确)Although he is poor,.he is happy.(尽管他穷，但他很快乐。) 真题再现： 1.(2024 上海徐汇区月考，沪外版)she studies hard,she still can't get good grades. A.Because B.Since C.Although D.So 答案：C解析：”努力学习”与”成绩不好为转折关系，用although引导让步从句。 2.(2023江苏无锡期末，沪外版)We didn't go out一the heavy rain.. A.because B.because of C.although D.as 答案：B解析："the heavy rain”是名词短语，需用because of(介词短语)，而非because(连 词，接从句)。 重难点四：s引导的倒装结构及特殊用法讲解： as引导让步状语从句时必须倒装，结构为：表语/状语/动词原形+as+主语+谓语。 -表语倒装：Young as he is,he works very hard.(尽管他年轻，但工作很努力。) -状语倒装：Hard as he works,,he can't catch up with others.(尽管他努力工作，还是赶不上别人。) -动词原形倒装：Try as he might,.he failed again.(尽管他尽力了，但还是失败了。) 真题再现： 1.(2024 浙江杭州期中，沪外版)difficult the problem is,we will try our best to solve it. A.As B.However C.Although D.No matter 答案：A解析：由形容词difficult置于句首可知为as引导的倒装让步从句，句意为'尽管问 题很难，我们仍会尽力解决”。 2.(2023上海杨浦区期末，沪外版)_Itry,Ican't speak English as fluently as native speakers. A.As hard B.Hard as C.Although hard 3 9年级沪外版 【寒假专版】 让步和原因状语从句精讲 D.Hard although 答案：B解析：副词hard置于句首，后接as,构成Hard as I try'的倒装结构，表”尽管我 努力尝试”。 易错点综合演练 1单项选择（直击重难点）》 1.he is young,he can solve the math problem by himself. A.Because B.Although C.If D.As 2.-Why didn't you join the club? -I was too busy with my studies. A.Since B.As C.Because D.Now that 3.hard she tries,she still can't pass the exam. A.As B.Although C.Even if D.However 4.We didn't go to the park the bad weather. A.because B.because of C.although D.as Ⅱ.用所给词的适当形式填空（强化句型结构）》 1.(be)he young,he knows a lot about science. 2.I didn't go to the party(because)I was ill. 3.(although)it was raining,we still went out for a walk 4.(as)she is a child,she can speak three languages. 5.He failed the exam (because of)his carelessness. 4 9年级沪外版 【寒假专版】 让步和原因状语从句精讲 Ⅲ.短文填空（综合运用状语从句） 用适当的连词填空，使短文完整通顺。 Tom is a hard-working student.1.he is very tired every day,he still keeps studying late.He wants to get good grades 2.he wants to enter a good high school.3.his parents are strict with him,they love him very much.4.he has some problems in his study,he always asks his teachers for help.5. he works so hard,he will surely achieve his dream. V.连词成句（聚焦句型结构） 1.he,is,young,although,he,works,hard,(. 2.because,I,was,late,I,missed,the,bus,(. 3.as,she,is,old,she,still,works,in,the,field,( 4.even if,it,rains,we,will,go,to,the,zoo,tomorrow,(. V.按要求改写句子（巩固句型结构） 1.Although he is old,.he is very strong.(改为同义句) 2.I didn't go to school because I was ill..（对划线部分提问) 3.He is young.He can play the piano very well.(用although合并句子) 4.As it is cold,we will stay at home.(改为同义句) 参考答案 1.单项选择：1B2.C3.A4B Ⅱ.用所给词的适当形式填空：1.Young as 2 because 3.Although 4.Child as 5.because of Ⅲ.短文填空：1.Although2.because3.Although 4.When 5.Because 9年级沪外版 【寒假专版】 让步和原因状语从句精讲 V.连词成句： 1.Although he is young,he works hard. 2.I was late because I missed the bus. 3.Old as she is,she still works in the field 4.Even if it rains,we will go to the zoo tomorrow. V按要求改写句子： 1.Old as he is,he is very strong. 2.Why didn't you go to school? 3.Although he is young,he can play the piano very well. 4.Since it is cold,we will stay at home. 6