Unit2Teenage problems语法whether,if宾语从句讲解与练习-2026-2027学年译林版英语九年级上册

该初中英语知识清单聚焦if/whether引导宾语从句的语法体系。从基础含义与用法切入，明确其“是否”语义及陈述语序结构，结合时态规则构建基础认知，进而区分通用场景与“只能用whether”的五大核心场景，辅以易错点解析和单元话题综合例句，形成递进式学习支架。 知识链路以“基础—差异—应用”逻辑展开，通过对比辨析强化whether与if的使用边界，易错点警示提升思维品质，配套单选、句型转换及汉译英练习覆盖不同语言能力维度，单元话题例句增强语境化表达，助力学生系统掌握语法规则并提升语言运用能力。

Unit2 Teenage problems语法讲解与练习 if /whether引导宾语从句详细讲解 一、基础含义与用法 1. 作用 if /whether 翻译为是否,用来把一般疑问句改成宾语从句,放在动词/介词/形容词后，表达不确定、疑问含义。 that 用于陈述句；if/whether 用于含疑问语气的句子。 2. 基础结构 主句动词 + if /whether + 陈述语序（主语在前，谓语在后） 例句： Can he keep calm? I wonder if/whether he can keep calm. 我想知道他是否能保持冷静。 Is she organized? I am not sure whether/if she is organized. 我不确定她做事是否有条理。 3. 时态规则（和 that 宾语从句完全一致） *主句现在时 → 从句按需任意时态 He asks whether I have finished the plan. 他问我是否完成了方案。 *主句过去时 → 从句改为对应过去时态 He asked whether I would accept the challenge. 他问我是否会接受挑战。 *客观真理永远用一般现在时 The kid wondered if practice makes perfect. 这个孩子想知道熟能生巧是不是真的。 二、if 和 whether 通用的情况（大部分场景） 放在动词后,无特殊搭配,两者可互换。 常用动词：wonder, ask, know, tell, find out, care, be sure 例句： *I don’t know if/whether he is modest. 我不知道他是否谦虚。 *She wants to find out if/whether we agree with her idea. 她想弄清楚我们是否同意她的想法。 *Could you tell me if/whether he hates showing off? 你能告诉我他是否讨厌炫耀吗？ 三、只能用 whether，不能用 if 的 5 大必考场景（中考重难点） 1. 直接与 or not 连用，whether … or not ✅ I don’t know whether he will come or not. ❌ I don’t know if he will come or not. 我不知道他会不会来。 2. 介词后面作宾语（about /of/over 等介词后） ✅ We are talking about whether we should take the risk. ❌ We are talking about if we should take the risk. 我们在讨论我们是否该冒险。 3. 后面接不定式 whether to do ✅ She hasn’t decided whether to take on this task. ❌ She hasn’t decided if to take on this task. 她还没决定是否承担这项任务。 4. 从句放句首充当主语从句 ✅ Whether he can control his temper is important. ❌ If he can control his temper is important. 他能否控制自己的情绪很重要。 5. 后面有 or 表二选一 ✅ He asked me whether I liked working alone or with partners. ❌ He asked me if I liked working alone or with partners. 他问我喜欢独自工作还是和搭档合作。 四、只能用 if 的场景（极少） 只有两种情况习惯只用 if： *引导条件状语从句（如果），此时不能用 whether If you stay calm, you won’t make mistakes. 如果你保持冷静，就不会犯错。 *否定动词后表 “是否” 口语中多用 if I don’t care if he agrees. 我不在乎他同不同意。 五、高频易错点 易错 1：必须使用陈述语序，不能疑问倒装 ❌ I wonder is he patient. ✅ I wonder whether he is patient. 易错 2：否定转移不适用 if/whether 从句 I don’t know whether he is lazy. 我不知道他是不是懒惰（不用把否定移到从句） 易错 3：区分 that /if/whether 确定陈述事实用 that：I believe that he is hard-working. 不确定、有疑问用 if/whether：I doubt if he is hard-working. 六、单元话题综合例句 1.I wonder whether you dare to admit your mistakes in public. 我想知道你是否敢于当众承认错误。 2.Nobody cares if you are too careless with details. 没人在意你是否在细节上太过粗心。 3.We argued over whether we should learn from others’ strengths. 我们争论是否要学习别人的优点。 4.He hasn’t made up his mind whether to give up the chance. 他还没决定是否放弃这次机会。 5.Whether he can cooperate well decides the success of the project. 他能否好好合作决定这个项目的成败。 6.The teacher asked if we reflected on our weaknesses every day. 老师问我们是否每天反思自身缺点。 7.I’m not sure whether this creative boy can finish the plan on time or not. 我不确定这个有创造力的男孩能否按时完成方案。 【配套专项练习】 一、单项选择 1.I wonder ______ Daniel has enough courage to accept the challenge. A. that B. whether C. what D. which 2.Nobody knows ______ or not the creative boy will take the lead. A. if B. what C. whether D. when 3.She hasn’t decided ______ to show off her achievements in public. A. if B. whether C. that D. how 4.We are talking about ______ we should divide the work properly. A. whether B. if C. that D. when 5.Could you tell me ______ the monitor is patient enough to listen to us? A. that B. whether C. what D. whose 6.______ he can keep calm under stress is still unknown to all of us. A. If B. Whether C. That D. What 7.He asked me ______ I preferred working alone or with partners. A. whether B. if C. that D. when 8.I wanted to know ______ he had realized his weak points. A. that B. if C. what D. how 9.No one cares ______ the careless man will correct his mistakes. A. which B. that C. whether D. whose 10.I didn’t find out ______ she was confident to finish the task last week. A. if B. that C. what D. which 11.They argued over ______ they should take on this difficult project. A. if B. whether C. when D. that 12.Do you know ______ our teacher will praise those organized students? A. that B. whether C. what D. whose 13.He hasn’t made up his mind ______ he will learn from others’ strengths. A. whether B. if C. that D. how 14.We all doubted ______ such a modest person would boast one day. A. that B. whether C. what D. where 15.______ or not we can finish the plan on time depends on our teamwork. A. If B. That C. Whether D. What 16.My mum asked ______ I could reflect on my bad personalities every night. A. if B. whether C. that D. when 17.The manager wondered ______ to trust the impatient young worker. A. if B. whether C. that D. why 18.I’m not sure ______ he has the ability to manage the whole group well. A. that B. whether C. what D. which 19.They discussed ______ they would stay or give up halfway. A. whether B. if C. that D. whose 20.Can you tell me ______ hard work can change a person’s fate? A. that B. whether C. what D. when 二、句型转换（改写为含 if/whether 宾语从句复合句） 1.Will he pay attention to details? I want to know. I want to know ______ ______ ______pay attention to details. 2.Has she found her own advantages? He asked me. He asked me ______ ______ ______ ______her own advantages. 3.Will you take on new challenges? I am not sure. I am not sure ______ ______ ______take on new challenges. 4.Can they cooperate well? We are arguing about it. We are arguing about ______ ______ ______cooperate well. 5.Should I show off my success? He didn’t know. He didn’t know ______ ______ show off his success. 6.Does practice make perfect? The boy wondered. The boy wondered ______ ______ ______perfect. 7.Will he give up or stick to the task? No one knows. No one knows ______ ______ ______give up or stick to the task. 8.Is Tom creative enough? Whether or not, we still wait for him. We don’t know ______ ______ ______creative enough or not. 9.Could she keep calm under pressure? They talked about this. They talked about ______ ______ ______ keep calm under pressure. 10.Will we win the competition? It is unknown to us all. ______ ______ will win the competition is unknown to us all. 三、汉译英（必须使用 if/whether 宾语从句） 1.我想知道他是否有勇气承认自己的错误。 _________________________________________________________ 2.没人确定那个细心的男孩是否能按时完成规划。 _________________________________________________________ 3.我们正在讨论是否要向身边谦虚的人学习。 _________________________________________________________ 4.她还没决定是否要接受这份有挑战性的工作。 _________________________________________________________ 5.他问我是否更喜欢独立思考还是小组讨论。 _________________________________________________________ 6.我们都怀疑急躁的人是否能做好长期安排。 _________________________________________________________ 7.是否能控制自己的情绪决定我们能否成功。 _________________________________________________________ 8.老师想知道我们是否每天反思自身的缺点。 _________________________________________________________ 9.我不清楚他是否愿意听取别人不同的意见。 _________________________________________________________ 10.他们争论是否不该在众人面前炫耀成就。 _________________________________________________________ Keys 一、单项选择 1.B 2.C 3.B 4.A 5.B 6.B 7.A 8.B 9.C 10.A 11.B 12.B 13.A 14.B 15.C 16.A 17.B 18.B 19.A 20.B 二、句型转换 1.whether/if he will 2.if/whether she had found 3.whether/if you will 4.whether they can 5.whether to 6.if/whether practice makes 7.whether he will 8.whether Tom is 9.whether she could 10.Whether we 三、汉译英 1.I wonder whether/if he has the courage to admit his mistakes. 2.Nobody is sure whether/if the careful boy can finish the plan on time. 3.We are talking about whether we should learn from modest people around us. 4.She hasn’t decided whether to take this challenging job. 5.He asked me whether/if I preferred thinking alone or group discussion. 6.We all doubt whether/if impatient people can make good long-term plans. 7.Whether we can control our feelings decides whether we can succeed. 8.The teacher wondered whether/if we reflected on our weaknesses every day. 9.I don’t know whether/if he is willing to listen to others’ different opinions. 10.They argued about whether they shouldn’t show off their achievements in public. 2 / 2 学科网（北京）股份有限公司 $