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

初中沪外版 【寒假专版】 9年级语法精讲 寒假专版 让步和原因状语从句专项训练 寒假语法易错点精讲 学段：初中教材：沪外版年级：9年级 语法认知 让步和原因状语从句：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。 易错点讲解 易错点一：though/although与but的连用错误 讲解： though/although引导让步状语从句时，主句前不能再用but,但可与yet/still连用。 例句：Though he is young,.he knows a lot..(正确)，Though he is young,but he knows a lot..(错误) 真题再现： l.(2024上海浦东期中，沪外版)_it rained heavily,we still went to the concert.. A.Because B.Though C.But D.So 答案：B解析：句意为“尽管雨下得很大，我们还是去了音乐会”，though引导让步状语从句， 符合沪外版教材语法要求。 2.(2023上海徐汇期末，沪外版)Although she is tired,,一she keeps working A.but B.so C.yet D.and 答案：C解析：although与yet连用表示“尽管…还是…”，不能与but连用，沪外版九年级 教材强调此语法点。 易错点二：because与so的连用错误 1 初中沪外版 【寒假专版】 9年级语法精讲 讲解： because引导原因状语从句时，主句前不能用so,二者只能用其一。 例句：He didn't go to school because he was ill..(正确)一Because he was ill,.so he didn't go to school,. (错误) 真题再现： 1.(2024上海闵行月考，沪外版)He stayed at home_he had a cold. A.so B.because C.but D.and 答案：B解析：句意为“他因为感冒待在家里”，because引导原因状语从句，沪外版教材要求 避免because与so连用。 2.(2023上海松江期末，沪外版)_it was late,we had to hurry up A.Because B.So C.But D.Or 答案：A解析：句意为“因为时间晚了，我们不得不快点”，because引导原因状语从句，符合 沪外版九年级语法规范。 易错点三：as引导让步状语从句时的倒装错误 讲解： s引导让步状语从句时需将表语、状语或动词原形置于句首，主谓倒装（名词提前时不带冠词）。 例句：Young ashe is,he can speak three languages.(正a确)→Ashe is young,he can speak three languages,. (错误，此时as引导原因状语从句) 真题再现： 1.(2024上海静安期中，沪外版)_difficult the problem is,,we will try to solve it. A.As B.Though C.However D.Because 答案：A解析：as引导让步状语从句时将表语difficult置于句首，构成倒装，符合沪外版教材 特殊句式要求。 2.(2023上海杨浦期末，沪外版)heis,he knows little about history. A.A teacher as B.Teacher as C.As a teacher D.As teacher 答案：B解析：as引导让步状语从句时，名词teacher提前不带冠词，构成倒装结构，沪外版九 年级语法重点强调此用法。 易错点四：since与because的用法混淆 初中沪外版 【寒假专版】 9年级语法精讲 讲解： since表示“既然”，强调对方已知的原因；because表示直接原因，语气最强，回答why问句。 例句：Since everyone is here,let's start the meeting.(已知情况)/He was late because he missed the bus.. (直接原因) 真题再现： l.(2024上海长宁月考，沪外版)一Why didn't you come to the party?一_I had to look after my sick mother. A.Since B.Because C.As D.For 答案：B 解析：回答why问句需用because,沪外版教材明确要求why问句用because回答。 2.(2023上海虹口期末，沪外版)_you are free today,.you can help me with my English.. A.Because B.Since C.Though D.If 答案：B解析：句意为“既然你今天有空，你可以帮我学英语”，sce表示已知的原因，符合沪 外版语法语境要求。 易错点综合演练 综合演练 I.单项选择（直击易错点) l.Though it was snowing heavily,we一arrived at school on time..(易错点一) A.still B.but C.so D.and 2.Ie didn't pass the exam_he didn't study hard.(易错点二) A.so B.because C.but D.or 3._small the room is,,it feels warm and comfortable.(易错点三) A.As B.Though C.Because D.So 4.一you have finished your homework,you can watch TV for a while.(易错点四) A.Because B.Since C.Though D.If Ⅱ.用所给词的适当形式填空（强化易错点区分） l.Although she was tired,she_keep)working till midnight.（易错点一) 2.HIe didn't go to the park yesterday一(because/so)he had to help his mom.(易错点二，选择正确 连词) 3 ,一(Young/As young)ashe is,.he has read hundreds of books.（易错点三，选择正确形式并填空) 3 初中沪外版 【寒假专版】 9年级语法精讲 4. Because/Since))you know the truth,you should tell us..(易错点四，选择正确连词) Ⅱ.短文填空（综合运用四大易错点） 用适当的连词填空，使短文完整通顺。（沪外版教材课文改编） -1.(Though/Because)Tom is only 13,he can cook very well.His parents are often busy with work, _2.(so/because)he usually prepares meals for the family.-3.-(As/Though)difficult cooking sometimes is,he never gives up.-4.-(Since/Because)his parents are proud of him,they always say he is their little chef. V连词成句（聚焦易错句式） 1.he,tired,was,he,kept,working,though()(易错点一) 2.it,rained,.we,stayed,home,because()(易错点二) 3.difficult,the task,as,is,we,will,finish,it()(易错点三) 4.you,free,are,you,can,help,me,since()(易错点四) 参考答案 L单项选择 1.A2B3.A4B Ⅱ.用所给词的适当形式填空 1.still kept 2.because 3.Young 4.Since II.短文填空 1.Though 2.so 3.As 4.Since V,连词成句 1.Though he was tired,he kept working 2.Because it rained,we stayed home. 3.Difficult as the task is,we will finish it. 4.Since you are free,you can help me. 4