if条件从句主将从现-2025-2026学年八年级英语下册句型全解（沪外版）

初二下册沪外版 【中考专版】 A版句型全解 中考专版 【A版句型全解】f条件句（主将从现） 初中·沪外版·初二下册 基本结构 句型结构：f+条件从句（主将从现） f引导的条件状语从句中，从句用一般现在时，主句用一般将来时(wl+动词原形) 条件从句可位于主句前或后，位于主句前时需用逗号与主句隔开 例句展示： If it rains tomorrow,we will stay at home.(如果明天下雨，我们将待在家里) You will get good grades if you study hard.(如果你努力学习，你会取得好成绩) 句型精讲（核心考法） 考法1：条件从句与主句的时态匹配（中考核心考点) 判断规侧+例句对比 规则：f引导的条件从句表示将来可能发生的条件时，从句用一般现在时（主语+动词原 形三单)，主句用一般将来时(wll+动词原形)，即主将从现 例句1（正确）：If it rains tomorrow,.we will stay at home. (从句rains为一般现在时，主句will stay为一般将来时) 例句2（错误）：If it will rain tomorrow,we stay at home, (时态搭配错误，不符合”主将从现”规则) 真题再现(2024沪外版教材配套中考模拟题) Ifhe hard,he pass the exam. A.study;will B.studies;will C.will study, D.studies, 初二下册沪外版 【中考专版】A版句型全解 答案：B 解析：if条件句表将来条件，从句用一般现在时studies,主句用一般将来时will pass,符合” 主将从现” 考法2：句型的否定形式 否定规则+例句转换 规则1：否定主句→在will后加not(will not=won't) 原句：If she comes,.I will tell her the news. 否定句：If she comes,.Iwon't tell her the news. 规则2：否定从句→在从句动词前加助动词don't/doesn't(根据主语人称变化) 原句：Ifhe has time,he will go shopping. 否定句：Ifhe doesn't have time,he will go shopping 真题再现(2023沪外版初二下册单元测试) If you (not hurry),you(miss)the bus.(用所给词的适当形式填空) 答案：don't hurry;will miss 解析：否定从句用don't hurry(主语you为第二人称)，主句用一般将来时will miss 考法3：对主句或从句成分提问 提问规则+例句提问 规则1：对主句动作提问一→用What+wil+主语+do+if从句？ 原句：If the weather is fine,.we will have a picnic. 间句：What will you do if the weather is fine? 规则2：对从句条件提问→用What+will+主句+if+主语+do? 原句：Ifhe feels tired,.he will rest. 间句：What will he do if he feels tired? 真题再现(2024沪外版教材同步练习) If Tom finishes his homework,he will watch TV.(对划线部分提问) 2 初二下册沪外版 【中考专版】A版句型全解 will Tom if he finishes his homework? 答案：What;do 考法4：与祈使句的转换 转换规则+例句转换 规则：if条件句（主将从现）可转换为”祈使句+ador+简单句（一般将来时）”，其中祈 使句相当于条件从句，and/or后的简单句相当于主句(and表顺承，or表转折) 原句：If you work hard,you will succeed. 转换句：Work hard,and you will succeed. 原句：If you don't leave now,you will be late. 转换句：Hurry up,or you will be late. 真题再现(2023沪外版初二下册期末测试) If you study hard,.you will get good grades.(改为同义句) and you will get good grades. 答案：Study hard 句型综合训练 训练1：单项选择（考察f条件句时态匹配） 1.If it tomorrow,we will cancel the picnic. A.rain B.rains C.will rain D.rained 2.If she early,she the morning train. A.leaves;catches B.will leave;will catch C.leaves;will catch D.will leave;catches 3 初二下册沪外版 【中考专版】A版句型全解 3.He the exam if he harder. A.passes,studies B.will pass;studies C.will pass;will study D.passes,will study 4.If you the book,please return it to the library on time. A.finish B.will finish C.finished D.are finishing 5.What you if you see a snake in the garden? A.do;do B.will;do C.did;do D.are;doing 6.If Tom here now.he us solve the problem A.is;helps B.will be;will help C.is;will help D.will be;helps 训练2：同义句转换（考察与祈使句转换) 1.If you listen carefully,you will understand the lesson. and you will understand the lesson. 2.If we don't start now,we will miss the bus. or we will miss the bus. 3.If you practice every day,you will improve your English → every day,and you will improve your English. 4.If she doesn't hurry,she will be late for school. or she will be late for school. 5.If you follow the instructions,you will complete the task. the instructions,and you will complete the task. 训练3：完成句子（考察否定形式及时态) 初二下册沪外版 【中考专版】 A版句型全解 1.If you (not study)hard,you (not pass)the exam. 2.Ifit (rain)this weekend,we (stay)at home. 3.She (not go)to the party if she (have)too much homework. 4.Ifhe (not call)me tomorrow.I (call)him. 5.We (plant)trees in the park if the weather (be)fine tomorrow. 6.If they (not hurry),they (miss)the beginning of the movie. 训练4：写作高级句式（考察f条件句应用） 1.如果你努力学习，你就能实现你的梦想。 →If you you your dream. 2.如果明天天气好，我们将去爬山。 →If the weather tomorrow,we mountain climbing. 3. 如果她有足够的钱，她会买一辆新车。 If she enough money.she a new car. 4.如果你遇到困难，你可以向老师求助。 →If you you your teacher for help. 5.如果我们保护好环境，动物们将会有更好的家园。 →Ifwe the environment,animals better homes. 参考答案 I训练1：单项选择 1.B2.C3.B4.A5.B6.C Ⅱ.训练2：同义句转换 1.Listen carefully 2.Hurry up 3.Practice daily 4.Hury up 5.Follow carefully ⅡI.训练3：完成句子 1.don't study,won't pass 2.rains;will stay 3.won't go;has 4.doesn't call;will call 5.will plant;is 6.don't hurry,will miss V训练4：写作高级句式 5 初二下册沪外版 【中考专版】A版句型全解 1.study hard;will achieve 2.is fine;will go 3.has;will buy 4.meet difficulties;can ask 5.protect;will have 6