Unit3语法(原因/让步状语从句)导学案-2026-2027学年教科版五四学制英语九年级上册

Unit3 No limits语法讲解与练习 语法: 原因状语从句&让步状语从句 （一）原因状语从句 定义：在复合句中作原因状语，用来解释主句动作发生的原因、理由，常用于阐述行为、心态、结果的由来。 1. 常用引导词及核心用法（必考） because（因为）：语气最强，直接回答why提问，表直接、根本原因，可置于句首或句末。 He keeps taking risks because he wants to challenge himself.（他不断冒险，因为他想挑战自我。） Because the mountain path is steep, we must be careful.（因为山路陡峭，我们必须小心。） since（既然、由于）：侧重已知、显而易见的原因，语气较弱，多用于句首。 Since you have enough confidence, you can try the extreme sport. （既然你有足够的信心，就可以尝试这项极限运动。） Since teamwork is important, we should cooperate with each other. （既然团队合作很重要，我们就应该互相配合。） 2. 核心考点与易错点 because & so 不连用：英语中“因为、所以”只能二选一，不可同时使用。 例句1：正确：He succeeded because he kept trying.（他成功了，因为他坚持尝试。） 例句2：错误：He succeeded, so because he kept trying. only because 强调唯一原因：用于强化语气，表“只因、仅仅因为”。 例句1：He never gives up only because he has strong faith. （他从不放弃，只因他拥有坚定的信念。） 例句2：She joins the team only because she loves teamwork.（她加入团队，只因热爱团队协作。） 语气强弱排序：because（最强）＞ since ＞ as（最弱）。 例句1：I quit the risky game because it is too dangerous.（直接根本原因） 例句2：As the weather is bad, we stop the mountaineering.（客观附带原因） （二）让步状语从句 定义：表转折、让步关系，翻译为“虽然、尽管、即使”，即从句情况存在，但主句动作依然发生，不受从句影响。 1. 常用引导词及核心用法（必考） although / though（虽然、尽管）：最常用，通用口语和书面语，不与but连用。 例句1：Although the road is steep, we keep climbing.（虽然山路陡峭，我们依然坚持攀登。） 例句2：He is brave though he is young.（尽管他年纪小，却十分勇敢。） even if / even though（即使、纵然）：侧重假设、退一步的让步，语气更强。 例句1：Even if we meet difficulties, we will never lose confidence. （即使遇到困难，我们也不会失去信心。） 例句2：Even though he failed once, he still tries again.（纵然他失败过一次，依然再次尝试。） 2. 核心考点与易错点（高频失分点） although/though 与 but 绝对不连用：有though/although无but，有but无though/although。 例句1：正确：Although he lacks experience, he works hard. 例句2：错误：Although he lacks experience, but he works hard. even if 侧重假设，even though 侧重事实。 例句1：Even if it rains tomorrow, we will go surfing.（假设：明天未必下雨） 例句2：Even though it rained yesterday, we finished the task.（事实：昨天确实下雨了） though 可放句末表“然而”，although不可用于句末。 例句1：The task is hard. We can finish it, though.（任务很难，然而我们可以完成。） 例句2：The risk is big. It is worth trying, though.（风险很大，但值得一试。） （三）重难点总结 1.原因从句核心：because/since/as 语气区分、不与so连用； 2.让步从句核心：although/though 不与but连用、even if/though 辨析； 3.所有状语从句均为陈述语序，无时态倒装。 【配套练习】 大题一：单项选择 ( )1. He never gives up ______ he has strong confidence in himself. A. because B. although C. though ( )2. ______ it is dangerous, many people love extreme sports. A. Because B. Although C. Since ( )3. I choose to take the risk ______ it is a precious chance to challenge myself. A. though B. even if C. because ( )4. ______ you are ready, you can start your mountaineering trip. A. Since B. Although C. Even if ( )5. ______ he lacks teamwork experience, he tries his best to cooperate. A. Because B. Although C. As ( )6. We keep practicing ______ we want to achieve success in the end. A. so B. because C. though ( )7. ______ the road is steep, we still walk forward bravely. A. Although B. Because C. Since ( )8. He seldom rests ______ he wishes to improve his leadership. A. though B. as C. because ( )9. ______ the task is hard, it is worth trying. A. Even though B. Because C. As ( )10. We restarted our plan ______ we met some unexpected problems. A. although B. because C. though ( )11. ______ time is limited, we must finish the task quickly. A. As B. Although C. Even if ( )12. He never feels nervous ______ he has prepared well. A. though B. because C. even though ( )13. ______ we fail many times, we will not lose hope. A. Even if B. Because C. Since ( )14. Good teamwork is important ______ it helps us solve problems fast. A. so B. because C. although ( )15. ______ he is old, he still loves surfing and sports. A. Although B. Because C. As ( )16. She warns others ______ she doesn’t want them to get hurt. A. though B. because C. even if ( )17. ______ the distance is long, we decide to finish the walk. A. Even though B. Because C. Since ( )18. He keeps calm ______ he meets difficult situations. A. because B. although C. even if ( )19. ______ everyone has different ideas, we can cooperate well. A. Since B. Although C. As ( )20. I love risk-taking sports ______ they teach me to be brave. A. because B. though C. even if 大题二：单词适当形式填空 1. He never gives up because he ________ (have) strong confidence. 2. Although it ________ (be) rainy, they still continued their trip. 3. She succeeds because she ________ (keep) practicing every day. 4. Even though he ________ (lack) experience before, he learned fast. 5. Since you ________ (prepare) well, you can take part in the competition. 6. Although the road ________ (be) steep, we will keep moving. 7. He warns others because he ________ (want) to keep them safe. 8. Even if we ________ (meet) difficulties, we will never give up. 9. As teamwork ________ (be) important, we should cooperate closely. 10. Although they ________ (fail) once, they tried again soon. 11. He achieves success because he never ________ (lose) heart. 12. Since time ________ (be) limited, we must hurry up. 13. Even though the task ________ (seem) hard, it is worth trying. 14. She shows good leadership because she ________ (practice) a lot. 15. Although he ________ (be) young, he has great courage. 大题三：句子改写 1. He works hard, so he gets great success.（用because改写） He gets great success ________ he works hard. 2. It is dangerous, but many people like extreme sports.（用although改写） ________ it is dangerous, many people like extreme sports. 3. Since you have confidence, you can try new things.（改为because） You can try new things ________ you have confidence. 4. Even if we face challenges, we will keep calm.（用though改写） ________ we face challenges, we will keep calm. 5. He lacks experience, but he is still excellent.（用even though改写） ________ he lacks experience, he is still excellent. 6. She practices hard because she wants to win.（用as改写） ________ she wants to win, she practices hard. 7. The trip is tiring, but it is meaningful.（用though改写） The trip is meaningful, ________ it is tiring. 8. We cooperate well, so we finish the task fast.（用because改写） We finish the task fast ________ we cooperate well. 9. Although the road is steep, we keep walking.（同义替换even if） ________ the road is steep, we keep walking. 10. As time is limited, we restart our plan.（用since改写） ________ time is limited, we restart our plan. 大题四：汉译英句子翻译 1. 因为拥有自信，他敢于挑战极限运动。（because） _______________________________________________________ 2. 虽然山路陡峭，但我们依然坚持攀登。（although） _______________________________________________________ 3. 既然团队合作很重要，我们应该互相协作。（since） _______________________________________________________ 4. 即使遇到困难，我们也不会失去勇气。（even if） _______________________________________________________ 5. 他取得成功是因为他从不放弃尝试。（because） _______________________________________________________ 6. 尽管他经验不足，但他学习能力很强。（even though） _______________________________________________________ 7. 鉴于时间有限，我们需要重新启动计划。（as） _______________________________________________________ 8. 虽然前路遥远，但我们终将抵达终点。（though） _______________________________________________________ 9. 她提醒大家注意危险，因为安全至关重要。（because） _______________________________________________________ 10. 纵然挑战重重，这段经历依然值得。（even though） _______________________________________________________ Keys 大题一：单项选择 1.A 2.B 3.C 4.A 5.B 6.B 7.A 8.C 9.A 10.B 11.A 12.B 13.A 14.B 15.A 16.B 17.A 18.C 19.B 20.A 大题二：单词适当形式填空 2 / 2 学科网（北京）股份有限公司 1. has（一般现在时，三单） 2. was（一般过去时，前后时态一致） 3. keeps（一般现在时，三单） 4. lacked（before提示一般过去时） 5. have（一般现在时） 6. is（主将从现，从句一般现在时） 7. wants（一般现在时，三单） 8. meet（even if主将从现） 9. is（一般现在时表客观事实） 10. failed（once提示过去式） 11. loses（一般现在时，三单） 12. is（一般现在时） 13. seems（一般现在时，三单） 14. practices（一般现在时，三单） 15. is（一般现在时表常态） 大题三：句子改写 1. because 2. Although 3. because 4. Though 5. Even though 6. As 7. though 8. because 9. Even if 10. Since 大题四：汉译英 1. He dares to try extreme sports because he has confidence. 2. Although the mountain road is steep, we still keep climbing. 3. Since teamwork is very important, we should cooperate with each other. 4. Even if we meet difficulties, we will never lose our courage. 5. He gets success because he never gives up trying. 6. Even though he lacks experience, he has a strong learning ability. 7. As time is limited, we need to restart our plan. 8. Though the road ahead is far, we will reach our destination in the end. 9. She warns everyone of danger because safety is of great importance. 10. Even though there are many challenges, this experience is still worthwhile. $