Unit 1 Teenagers today 核心语法原因条件状语从句2026-2027学年外研版英语九年级上册

本讲义聚焦外研版九年级上册Unit 1核心语法，系统梳理if/because引导的原因、条件状语从句。通过区分规则（原因从句解释动作缘由、条件从句表假设结果）、基础句式（主句+because/If+从句）、时态规则（if从句现主将来，because从句与主句时态统一）及四大易错点（如条件从句加will、because与because of混用等），搭建清晰的语法学习支架。 该资料以传统民间艺术为主题载体，融合选词填空、句型转换等多样化题型，助力学生在语境中提升语言运用能力。单句改错环节培养思维品质，引导学生分析语法错误；书面表达要求运用if/because从句，强化综合语言输出。课中辅助教师实施分层教学，课后参考答案帮助学生自主查漏补缺，有效落实语言能力与文化意识的培育。

外研版九年级上册 Unit 1 Teenagers today 核心语法原因条件状语从句 专项练习题 核心语法：if / because 引导的原因、条件状语从句 一、单元语法核心学习要点 1. 两类从句区分规则 ① **because 原因状语从句**：用来解释动作、观点产生的原因 例句：I love puppet art because it runs in my blood. ② **if 条件状语从句**：表假设、条件，描述满足后会发生的结果 例句：If young people take action, folk arts will stay alive. 2. 基础句式结构 主句 + because + 陈述句（原因） If + 陈述句（条件）, 主句（结果） 3. 时态固定规则（主将从现） if引导条件从句：从句用一般现在时，主句用一般将来时； because从句时态和主句保持统一（过去事迹全用过去时，常态用现在时）。 4. 四大高频易错点 ① 条件从句中多加will（错误：If you will try, you will succeed）； ② because 后接名词短语，错用because of（because of+名词，because+完整句子）； ③ 逻辑连词混用：表条件误用because，表原因误用if； ④ 从句语序改成疑问句，必须保持陈述语序。 一、选词填空 responsibility, encouraging, performance, traditional, role, action, confidence, attention, courage, support（每词限用一次，变形填写） 1. It’s our ________ to carry forward folk arts to young people. 2. Her warm words were so ________ that I decided not to give up puppet art. 3. The wonderful puppet ________ won loud cheers from all students. 4. Many teenagers think this old craft is not ________ enough now. 5. Zhan Haojing is an excellent ________ model for us students. 6. If we take quick ________, we can stop traditional arts from disappearing. 7. Winning the show gave me more ________ to keep practicing puppetry. 8. This special show draws wide ________ from people at home and abroad. 9. You need great ________ to stick to your dream when others doubt you. 10. We should ________ each other to inherit our excellent culture. 二、单项选择 1. Zhan Haojing is a famous puppet ________ who loves Minnan folk art deeply. A. perform B. performer C. performance D. performing 2. She fell close to puppetry again ________ her grandpa’s video moved her greatly. A. because B. if C. so D. though 3. We must do all we can ________ traditional arts alive forever. A. keep B. stay C. make D. let 4. All classmates were completely ________ in the fantastic puppet show. A. interested B. lost C. boring D. crowded 5. He is a responsible teen ________ he always puts public interests first. A. if B. because C. when D. so 6. This youth’s creative activity ________ lots of media’s attention online. A. paid B. drew C. gave D. made 7. You ________ the duty to protect our precious cultural heritage. A. shoulder B. take C. A & B D. carry 8. ________ you keep practicing folk art, you will make more progress. A. If B. Because C. So D. Unless 9. Few people cared about puppet art ________ most thought it was old-fashioned. A. if B. because C. but D. though 10. The school will hold a show ________ more students know about puppetry. A. if B. because C. so that D. unless 三、句型转换（每空一词，用if/because改写合并句子） 1. You love traditional culture. You will learn it well. ____ you love traditional culture, you ____ learn it well. 2. Her mum was a puppet artist. She knew how to make puppets come alive. Her mum was a puppet artist ____ she knew how to make puppets come alive. 3. The speech was popular. It attracted thousands of viewers. The speech was popular ____ it ____ thousands of viewers. 4. We want to save old crafts. We should take action now. We should take action now ____ we want to save old crafts. 5. You never give up. You will realize your dream one day. ____ you never give up, you ____ realize your dream one day. 6. I look up to this teen. He always encourages his classmates. I look up to this teen ____ he always encourages his classmates. 7. The show was amazing. All kids were attracted. All kids were attracted ____ the show ____ amazing. 8. He sets a good example. He never fears difficulties. He sets a good example ____ he never fears difficulties. 四、单句改错（每句仅有1处错误，划出错误并改正） 1. If you will hold on to your dream, you will succeed. 错误：________ 改正：________ 2. I cried happily because of the puppet show was touching. 错误：________ 改正：________ 3. He is a role model because of he always helps others. 错误：________ 改正：________ 4. Because you want to learn puppetry, you can join our art club. 错误：________ 改正：（逻辑连词替换）________ 5. Students loved the show so it was full of magic. 错误：________ 改正：________ 6. He joined the show if his teacher asked him to take part. 错误：________ 改正：（连词替换）________ 五、根据中文完成句子（必须使用if / because从句，括号短语必用） 1. 如果你热爱传统文化，它就会吸引你的目光。（be interested in, draw attention） ____ you are interested in traditional culture, it ____ your attention. 2. 他是榜样，因为他从不轻易放弃梦想。（role model, give up） He is a good ____ ____ he never _______his dream easily. 3. 如果我们不行动，传统技艺将会消失。（take action, disappear） ____ we don’t ________, traditional crafts ____. 4. 她很自豪，因为她扛起了传承民间艺术的责任。（proud, shoulder the responsibility） She feels ______ ____ she ____ of passing on folk art. 5. 如果青少年参与，木偶艺术将会重焕生机。（come to life） ____ teenagers join in, puppet art will ____ again. 6. 我敬佩她，因为她总优先考虑他人。（admire, think of others） I admire her ____ she always ____ first. 六、书面表达（两段，总分35分） 要求：每段不少于4句话，每段至少包含2处if / because引导状语 Passage 1 介绍身边少年榜样（17分） 提示：描写人物品质、日常行为，说明你敬佩他/她的理由 ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ Passage 2 谈谈你传承传统民间艺术的做法（18分） 提示：写你会做的行动，结合if/because说明这么做的原因 ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ===================================================================== 参考答案 一、选词填空 1. responsibility 固定句型 It’s one’s responsibility to do sth. 2. encouraging 形容词修饰名词words，意为鼓舞人心的 3. performance 名词，木偶演出 4. traditional 形容词修饰crafts，传统的 5. role role model 固定短语：榜样 6. action take action 采取行动 7. confidence 名词，信心 8. attention 句子已有谓语动词draws，形容词wide后需要接名词 ， 9. courage 名词，勇气 10. support 情态should后接动词原形 二、单项选择 1.B 解析：performer指表演者，perform动词，performance指演出事物 2.A 解析because引导原因状语，解释亲近木偶的缘由 3.C 解析固定搭配make sth alive，使……焕发活力 4.B 解析be lost in 沉浸于 5.B 解析because引导原因背景，说明他有责任心的场景 6.B 解析draw attention 吸引关注，过去式drew 7.C 解析shoulder the responsibility / take the responsibility 两种搭配均正确 8.A 解析if引导条件状语从句，主将从现 9.B 解析句意很少有人关注木偶艺术”的原因是“大多数人认为它过时” 10. C 解析so that 以便，句意：学校举办演出是为了让更多学生了解木偶戏 三、句型转换 1.If; will 2.because 3.because; attracted 4.because 5.If; will 6.because 7.because; was 8.because 四、单句改错 1. will hold on → hold on （if从句一般现在表将来，去掉will） 2. because of → because （because of后接名词短语，because接完整句子） 3. because of → because （后为完整陈述句，删除of） 4. Because → If （表条件：如果你想学，就能加入俱乐部） 5. so → because （因果颠倒，精彩是大家喜爱的原因） 6. if → because （表因果 ） 五、完成句子翻译（18分） 1.If; will draw attention 2.role model; because; gives up 3.If; take action ;will disappear 4. proud ;because; shoulder the responsibility 5.If; come to life 6.because; thinks of others 六、书面表达参考范文 Passage 1 My deskmate Li is my role model. He is warm-hearted because he always helps classmates with study. If anyone meets difficulties, he will stop to give a hand. He never gives up his goals because he believes hard work pays off. I respect him deeply because he sets a perfect example for all teenagers. Passage 2 I plan to spread Minnan puppet art. I will practice every weekend because I love this traditional treasure. If my friends show interest, I will teach them basic puppet skills. I will post short videos online because more young people can know it. If all teens take action, folk art will never disappear. 4 学科网（北京）股份有限公司 $