Unit2语法(if状语从句)讲解与练习-2026-2027学年冀教版英语九年级上册

本初中英语讲义聚焦if引导的真实条件状语从句，系统梳理从基础概念（定义、两种句式位置）到核心规则（主将从现、主情从现、主祈从现三现原则），再到拓展考点（unless转换、if两种用法区分、客观真理时态）及高频易错警示的递进式学习支架。 该资料以单元话题例句为载体，设计词形填空、单选、改写、汉译英多样练习，强化语言能力。通过易错对比（如if条件句与宾语从句时态差异）培养思维品质，配套答案助力课后自查，课中提升教师授课效率，课后帮助学生查漏补缺，落实学习能力培养。

Unit2 Communication语法讲解与练习 if引导的真实条件状语从句 一、基础概念 条件状语从句：在复合句中作状语，说明主句动作发生的前提条件。 if conj. 如果；假如，引导真实条件状语从句（条件很有可能实现）。 句式两种位置: 1.If +从句，主句.（从句放句首，必须加逗号隔开） ✅ If you have a misunderstanding, talk with your partner. 2.主句+ if +从句.（从句在末尾，不加逗号） ✅ Talk with your partner if you have a misunderstanding. 二、核心黄金规则：三现原则（主将从现 /主情从现 /主祈从现） 1.主将从现（最常考） 主句：一般将来时（will /won’t +动词原形） if 从句：一般现在时 结构：If +主语+现动，主语+ will +动词原形。 If you hate quarrels, you will find a proper way to communicate. 如果你讨厌争吵，你会找到恰当的沟通方式。 You will reach an agreement if you exchange opinions calmly. 如果你们冷静交换想法，将会达成一致。 2.主情从现 主句：含有情态动词 can /may/must /should, if 从句：一般现在时 If you make a promise, you must keep it. 如果你许下承诺，就必须遵守。 3.主祈从现 主句：祈使句（动词原形开头，表建议、命令） if 从句：一般现在时 If you feel angry, don’t shout at others. 如果你感到愤怒，不要对别人大喊大叫。 三、拓展考点 1. if … not = unless（除非；如果不） If you don’t keep your promise, others won’t trust you. = Unless you keep your promise, others won’t trust you. ⚠️ 注意：unless 本身带有否定含义，不要再额外加 not！ 2. 区分两大 if（极易混淆易错点） ① if 引导条件状语从句=如果→遵循主将从现 I will contact you if I have time. 如果我有空，我会联系你。 ② if 引导宾语从句=是否→时态根据真实时间正常变化 I don’t know if he will come. 我不知道他是否会来。 3. 客观真理、客观事实：主从句都用一般现在时 If you show respect to others, they show respect to you. 如果你尊重他人，他人也会尊重你。 四、高频易错警示 ❌ 错误：If he will cancel the plan, I will tell you. ✅ 正确：If he cancels the plan, I will tell you. （if 从句禁止使用 will） ❌ 错误：If everyone have different opinions, don’t argue. ✅ 正确：If everyone has different opinions, don’t argue. （从句主语三单，动词变三单形式） ❌ 错误：You will fail unless you won’t try your best. ✅ 正确：You will fail unless you try your best. （unless 自带否定，不能再加 not） 五、单元话题例句 1.If you have difficulty in communication, find a good listener. 2.We will avoid misunderstanding if we speak politely. 3.If you are disappointed, you should express your opinion calmly. 4.Don’t joke with others if they look serious. 5.If the leader cancels the meeting, we will have free time. 【配套专项练习】 一、用所给单词的适当形式填空 1.If you meet some ____________ (difficult) in talking, be patient. 2.If you ____________ (not hate) quarrels, you will get on well with your partner. 3.If he ____________ (keep) his promise, we will trust him completely. 4.You ____________ (reach) an agreement if you communicate properly. 5.If there ____________ (be) a misunderstanding, solve it at once. 6.____________ (not be) angry if others have different opinions. 7.If you ____________ (feel) disappointed, talk about your feelings. 8.She may ____________ (contact) you if she ____________ (cancel) the plan. 9.If you ____________ (joke) with him, he will laugh happily. 10.The leader ____________ (give) us instructions if he ____________ (come). 11.If you are ____________ (satisfy) with the result, let us know. 12.If he ____________ (speak) seriously, you should listen carefully. 13.We ____________ (not start) the talk if he ____________ (be) absent. 14.If you ____________ (divide) the work well, everyone will feel fair. 15.____________ (try) to understand others if you have different ideas. 16.If she ____________ (become) the president, she will organize activities. 17.You must ____________ (keep) calm if you ____________ (meet) trouble. 18.If your opinion ____________ (be) different, speak politely. 19.If they ____________ (raise) money for charity, many people will help. 20.If you ____________ (not take) my advice, you will have more trouble. 21.If the ____________ (listen) is quiet, the speaker will feel relaxed. 22.He ____________ (succeed) if he ____________ (make) a good plan. 23.If you ____________ (show) good manners, people will like you. 24.If you ____________ (promise) to come, don’t be late. 25.There ____________ (be) less shame if you tell the truth bravely. 二、单项选择 1.If it ______ tomorrow, we will cancel the face-to-face talk. A. rain B. rains C. will rain D. is raining 2.You ______ good relationships if you respect others. A. build B. built C. will build D. are building 3.—I don’t know if Tom ______ to the meeting. —If he ______, I will tell you at once. A. comes; comes B. will come; comes C. comes; will come D. will come; will come 4.______ you have a misunderstanding, talk with your partner first. A. If B. Unless C. Though D. Because 5.Don’t shout ______ you feel very angry. A. if B. unless C. although D. when 6.You will fail to reach an agreement ______ you communicate patiently. A. if B. unless C. when D. after 7.If everyone ______ their promise, there will be less trouble. A. keep B. keeps C. will keep D. kept 8.If you ______ late, please send me a message ahead of time. A. are B. will be C. were D. are going to be 9.—Shall we start the discussion now? —Wait. We ______ begin if our leader ______. A. won’t; comes B. will; doesn’t come C. won’t; doesn’t come D. will; comes 10.If you ______ difficulty in talking, you can write a letter. A. have B. has C. will have D. had 11.______ be silly if you refuse to listen to others’ opinions. A. You B. You’ll C. You are D. You were 12.You may make more friends ______ you are a good listener. A. if B. unless C. before D. until 13.If she ______ absent from the meeting, we will wait for her. A. is not B. will not be C. was D. were 14.Work hard, and you ______ in the communication competition. A. succeed B. succeeded C. will succeed D. have succeeded 15.If you ______ jokes with others, don’t hurt their feelings. A. make B. makes C. will make D. made 三、句子改写 要求：使用 if 条件状语从句改写句子，保持原意。 1.Work hard, and you will succeed in communicating with others. ___________________________________________________ 2.Unless you keep calm, you will have a quarrel. ___________________________________________________ 3.Get ready, or you will miss the dialogue. ___________________________________________________ 4.I will contact you. I have free time. ___________________________________________________ 5.You won’t reach an agreement. You don’t listen to others. ___________________________________________________ 6.Don’t be absent. The leader will give important instructions. ___________________________________________________ 7.Tell me the truth. I will not be disappointed. ___________________________________________________ 8.You can make more friends. You have good manners. ___________________________________________________ 9.Unless he cancels the plan, we will have a meeting. ___________________________________________________ 10.Don’t make fun of others. They will feel ashamed. ___________________________________________________ 四、汉译英句子翻译 1.如果你遇到沟通困难，耐心倾听他人。 _____________________________________________ 2.如果我们冷静交流，我们将会消除误会。 _____________________________________________ 3.如果你许下承诺，你就应该遵守它。 _____________________________________________ 4.除非他缺席，否则会议不会取消。 _____________________________________________ 5.如果你们交换想法，你们会达成一致。 _____________________________________________ 6.如果你感到愤怒，不要和别人争吵。 _____________________________________________ 7.如果你是一名好的倾听者，人们愿意和你交谈。 _____________________________________________ 8.如果领导改变计划，他会提前通知我们。 _____________________________________________ 9.如果你开别人玩笑，不要伤害他们的感情。 _____________________________________________ 10.如果我们互相尊重，我们就会拥有良好的关系。 _____________________________________________ Keys 一、词形填空 1.difficulties 2.don’t hate 3.keeps 4.will reach 5.is 6.Don’t be 7.feel 8.contact; cancels 9.joke 10.will give; comes 11.satisfied 12.speaks 13.won’t start; is 14.divide 15.Try 16.becomes 17.keep; meet 18.is 19.raise 20.don’t take 21.listener 22.will succeed; makes 23.show 24.promise 25.will be 二、单项选择 1.B 2.C 3.B 4.A 5.A 6.B 7.B 8.A 9.D 10.A 11.B 12.A 13.A 14.C 15.A 三、句子改写 1.If you work hard, you will succeed in communicating with others. 2.If you don’t keep calm, you will have a quarrel. 3.If you don’t get ready, you will miss the dialogue. 4.I will contact you if I have free time. 5.You won’t reach an agreement if you don’t listen to others. 6If you are absent, you will miss the important instructions from the leader. 7.If you tell me the truth, I will not be disappointed. 8.You can make more friends if you have good manners. 9.If he doesn’t cancel the plan, we will have a meeting. 10.If you make fun of others, they will feel ashamed. 四、汉译英 1.If you meet difficulty in communication, listen to others patiently. 2.If we communicate calmly, we will clear up the misunderstanding. 3.If you make a promise, you should keep it. 4.Unless he is absent, the meeting won’t be canceled. = If he isn’t absent, the meeting won’t be canceled. 5.If you exchange ideas, you will reach an agreement. 6.If you feel angry, don’t quarrel with others. 7.If you are a good listener, people are willing to talk with you. 8.If the leader changes the plan, he will tell us ahead of time. 9.If you make jokes with others, don’t hurt their feelings. 10.If we respect each other, we will have good relationships. 2 / 2 学科网（北京）股份有限公司 $