专题05 if引导的条件状语从句【精讲精练】-2024-2025学年八年级英语上学期期末考点大串讲（人教版）

2024-2025学年八年级上期末考点大串讲（人教版） 专题05 if引导条件状语从句 语法精讲 一、定义 条件状语从句 ★是由if等引导词所引导的状语从句 ★“条件”是指某一件事情实现之后（从句中的动作），其它事情（主句中的动作）才能发生 ★条件状语从句中，引导词所在的句子是从句，另一部分为主句。 ★if从句既可放在主句前，也可放在主句后。若if从句放在主句前，须用逗号隔开。 If my mother is free, she will take me to the park. = My mother will take me to the park if she is free. 如果我妈妈有空，她将会带我去公园。  二、用法 在if引导的条件状语从句中，符合以下原则： ★原则1：主将从现 主句是一般将来时，从句用一般现在时。 If my brother comes back, he will take me to the park. ★原则2：主情从现  主句含有情态动词can/may/might/must/should等，从句用一般现在时。 If you want to be healthy, you should keep a good diet. ★原则3：主祈从现 主句是祈使句，从句用一般现在时。 Don’t play with the knife if you don’t want to get hurt. 三、与其他句式之间的转换 (1) 借助“祈使句+and / or+ 一般将来时的句子”这一句型来转换。and在句意上表示顺承关系, or表示转折关系。 If you get up early, you'll get there on time. = Get up early, and you'll get there on time. = Get up early, or you won't get there on time. 早点起床, 你就会准时到那里。 (2) 借助介词without或with来转换条件状语从句。 If there is no water, fish will die. = Fish will die without water.如果没有水, 鱼就会死。 If you help me, I'll finish the work soon. = With your help, I'll finish the work soon. 如果你帮助我, 我就会快点完成工作。 (3) if … not 导的条件状语从句, 可以借助连词unless来改写。 You will be late if you don't go there by bus. = You will be late unless you go there by bus. 如果你不乘公共汽车你就会迟到。 拓展：if /when 引导状语从句和宾语从句这两种从句。从句的时态的确定。 if When if/when从句的时态 条件/时间状语从句 如果、假如 当…的时候 一般现在时 宾语从句 是否 什么时候 一般将来时 巩固练习 1.Can you guess if they___ to play football with us ? I think they will come if they ____free. A. come , are B. will come , will be C. will come , are D. come , will be 2.Can you tell me when he____here tomorrow ? When he _____ here , please call me . A. comes , comes B. will come , will come C. will come ,comes D. comes, will come 基础训练 原创精品资源学科网独家享有版权，侵权必究！10 学科网（北京）股份有限公司 学科网（北京）股份有限公司 1．— Do you know when Mr. Li will meet us tomorrow? — Sorry, I don’t know now, but I’ll tell you if he ________. A．arrive B．reaches C．get D．arrives 2．—I failed again! I feel very upset. —Don’t lose heart. If you ________ going, you will make it finally! A．keep B．kept C．will keep D．are keeping 3．Our eyesight will become poorer and poorer ________ we spend too much time playing the phone. A．so B．before C．if D．but 4．If it ________ tomorrow, I won’t go shopping with my mom. A．rain B．rains C．doesn’t rain D．don’t rain 5．—There is going to be a basketball game this evening. —That’s exciting! I will watch it ________ I’m free then. A．so B．but C．if D．before 6．You will feel happy at school ________ you get on well with your classmates. A．though B．because C．unless D．if 7．There ________ a sports meet next week if it ________. A．is going to have; doesn’t rain B．is going to be; doesn’t rain C．is going to be; won’t rain D．is going to have; won’t rain 8．________ you use your dictionary often, your spelling will improve. A．Whether B．If C．Though D．Unless 9．Talk to your teacher and you will get help ________ you have a problem. A．unless B．if C．until D．before 10．I will go on a trip with my classmates if it ________ tomorrow. A．won’t rain B．isn’t raining C．didn’t rain D．doesn’t rain 11．—Would you like to help me clean the house this weekend? —I’d like to ________ I finish my homework. A．before B．though C．if D．so 12．I don’t know if he ________ here. If he ________, I will tell you. A．comes; comes B．will come; will come C．will come; comes D．comes; will come 13．— Many people are killing sharks (鲨鱼) for money. — If people keep killing sharks, there ________ any of them in the sea some day. A．may not be B．will not have C．don’t have D．aren’t 14．I wonder if Sally ________ to my party next Sunday. If she ________ to my party, I’ll be very happy. A．goes, goes B．will go, will go C．goes, will go D．will go, goes 15．If you share your happiness with others around you, you ________ happier. A．feel B．will feel C．are feeling D．felt 16．—I won’t go to Bill’s birthday party this Friday. —If you don’t, I _____, either. A．do B．won’t C．don’t 17．What ________ if he ________ a lot of money? A．will happen, will win B．happens; will win C．will happen, wins D．happens; wins 18．Go to see a doctor ________ you are ill. A．but B．if C．and D．or 19．— Emma failed her exams. I think she should work harder. — I agree. ________ she does, she’ll get good grades. A．If B．Because C．Before D．Though 20．Some people think they may talk to others _________ they have problems. A．though B．so C．if D．until 提升训练 1．（23-24八年级上·甘肃武威·期末）—Tim, our foreign teacher Ms. Green will go back to England next week. —Really? Let’s have a party to say goodbye to her ________ she is free this weekend. A．unless B．if C．though D．until 2．（23-24八年级上·江西吉安·期末）Don’t bring any snacks to the party. If you ________ I’ll take them away. A．are B．will do C．did D．do 3．（23-24八年级上·湖北十堰·期末）—Did Tina finish her job? —I don’t know. But I think she _______ me a call if she finishes. A．gave B．gives C．is giving D．will give 4．（23-24八年级上·湖北·期末）—Do you know if your cousin will come tomorrow? —No. But if he ________, I will call you to have a meal together. A．come B．comes C．will come D．is coming 5．（23-24八年级上·云南临沧·期末）If I ________ available next weekend, I ________ a trip to Beijing. A．am; take B．am; will take C．will be; take D．will be; will take 6．（23-24八年级上·陕西西安·期末）Do you know if it ________ tomorrow? If it ________ tomorrow, I’ll wear more clothes. A．snows, will snow B．will snow, will snow C．snows, snows D．will snow, snows 7．（23-24八年级上·河北石家庄·期末）________ people have problems, they should talk to others to solve them. A．If B．Unless C．Until D．Which 8．（23-24八年级上·湖北武汉·期末）—What do you plan for the coming winter vacation? —If I ________ the exam, I ________ to Sanya to have a great time. A．pass, fly B．will pass, fly C．pass, will fly D．will pass, will fly 9．（23-24八年级上·湖北孝感·期末）—Will you go to the zoo with them tomorrow? —Yes. But if it ________, we will watch TV at home. A．rain B．rains C．will rain D．raining 10．（22-23八年级上·四川广元·期末）You can taste the delicious Yunnan Rice Noodles ________ you go to Yunnan. A．if B．though C．because D．unless 11．（23-24八年级上·湖北武汉·期末）— Do you know when Tom will come back tomorrow? — Sorry, I don’t know. If he __________ back, I’ll tell you. A．comes B．come C．will come D．may come 12．（23-24八年级上·四川广元·期末）—How can I do better in Math? —________ you think twice whenever you do Math, you can do much better. A．Unless B．If C．However D．Can 13．（23-24八年级上·甘肃武威·期末）I can’t stand it if you ________ the same mistake again tomorrow. A．will make B．makes C．are going to make D．make 14．（23-24八年级上·吉林松原·期末）—If Tony to this party, we will have a great time. —Yes. He’s so funny that he always makes us laugh. A．will come B．came C．coming D．comes 15．（22-23八年级上·河北廊坊·期末）—Will you go to Tom’s birthday party? —If you _______, I _______. A．go; go B．will go; will go C．will go; go D．go; will go 16．（22-23八年级上·广东深圳·期末）—Don’t promise anything unless you’re 100 percent sure. —I feel sorry for breaking my promise and I won’t in the future. A．if you’re B．although you’re C．as you are D．if you aren’t 17．（22-23八年级上·湖北孝感·期末）You’d better travel around Canada with a guide ________ you want to know more about its culture. A．unless B．until C．though D．if 18．（22-23八年级上·湖北黄冈·期末）—What will he do if he ________ to school late tomorrow morning? —I think he should say sorry to the teacher. A．goes B．go C．will go D．is going 19．（22-23八年级上·湖北十堰·期末）—When will you go home this afternoon? —________ I finish all my work, I am sure I can go by 5:00. A．Although B．So C．If D．So that 20．（22-23八年级上·吉林四平·期末）If you ________ Jack, please ask him if he ________ to work in the factory tomorrow. A．see; will go B．will see; goes C．see; goes $$2024-2025学年八年级上期末考点大串讲（人教版） 专题05 if引导条件状语从句 语法精讲 一、定义 条件状语从句 ★是由if等引导词所引导的状语从句 ★“条件”是指某一件事情实现之后（从句中的动作），其它事情（主句中的动作）才能发生 ★条件状语从句中，引导词所在的句子是从句，另一部分为主句。 ★if从句既可放在主句前，也可放在主句后。若if从句放在主句前，须用逗号隔开。 If my mother is free, she will take me to the park. = My mother will take me to the park if she is free. 如果我妈妈有空，她将会带我去公园。  二、用法 在if引导的条件状语从句中，符合以下原则： ★原则1：主将从现 主句是一般将来时，从句用一般现在时。 If my brother comes back, he will take me to the park. ★原则2：主情从现  主句含有情态动词can/may/might/must/should等，从句用一般现在时。 If you want to be healthy, you should keep a good diet. ★原则3：主祈从现 主句是祈使句，从句用一般现在时。 Don’t play with the knife if you don’t want to get hurt. 三、与其他句式之间的转换 (1) 借助“祈使句+and / or+ 一般将来时的句子”这一句型来转换。and在句意上表示顺承关系, or表示转折关系。 If you get up early, you'll get there on time. = Get up early, and you'll get there on time. = Get up early, or you won't get there on time. 早点起床, 你就会准时到那里。 (2) 借助介词without或with来转换条件状语从句。 If there is no water, fish will die. = Fish will die without water.如果没有水, 鱼就会死。 If you help me, I'll finish the work soon. = With your help, I'll finish the work soon. 如果你帮助我, 我就会快点完成工作。 (3) if … not 导的条件状语从句, 可以借助连词unless来改写。 You will be late if you don't go there by bus. = You will be late unless you go there by bus. 如果你不乘公共汽车你就会迟到。 拓展：if /when 引导状语从句和宾语从句这两种从句。从句的时态的确定。 if When if/when从句的时态 条件/时间状语从句 如果、假如 当…的时候 一般现在时 宾语从句 是否 什么时候 一般将来时 巩固练习 1.Can you guess if they___ to play football with us ? I think they will come if they ____free. A. come , are B. will come , will be C. will come , are D. come , will be 2.Can you tell me when he____here tomorrow ? When he _____ here , please call me . A. comes , comes B. will come , will come C. will come ,comes D. comes, will come 基础训练 原创精品资源学科网独家享有版权，侵权必究！10 学科网（北京）股份有限公司 学科网（北京）股份有限公司 1．— Do you know when Mr. Li will meet us tomorrow? — Sorry, I don’t know now, but I’ll tell you if he ________. A．arrive B．reaches C．get D．arrives 【答案】D 【详解】句意：——你知道李先生明天什么时候和我们见面吗？——抱歉，我现在不知道，但如果他到了我会告诉你的。 考查动词辨析。arrive到达，动词原形，为不及物动词；reaches到达，动词三单形式，为及物动词；get得到，动词原形；arrives到达，动词三单形式，为不及物动词。结合“if”引导条件状语从句，遵循“主将从现”的原则，所以从句用一般现在时，且主语“he”为第三人称单数，这里要填不及物动词，所以要填三单形式“arrives”。故选D。 2．—I failed again! I feel very upset. —Don’t lose heart. If you ________ going, you will make it finally! A．keep B．kept C．will keep D．are keeping 【答案】A 【详解】句意：——我又失败了！我感到很沮丧。——别灰心。如果你坚持下去，你最终会成功的！ 考查时态。keep原形；kept过去式；will keep一般将来时；are keeping现在进行时。根据“If you …going, you will make it finally!”可知本句是if引导的条件状语从句，遵循“主将从现”原则，从句应用一般现在时。故选A。 3．Our eyesight will become poorer and poorer ________ we spend too much time playing the phone. A．so B．before C．if D．but 【答案】C 【详解】句意：如果我们花太多时间玩手机，我们的视力会越来越差。 考查连词辨析。so因此；before在……之前；if如果；but但是。根据“we spend too much time playing the phone.”可知，前后句之间表示条件关系，用if引导条件状语从句。故选C。 4．If it ________ tomorrow, I won’t go shopping with my mom. A．rain B．rains C．doesn’t rain D．don’t rain 【答案】B 【详解】句意：如果明天下雨，我就不跟妈妈去购物了。 考查主谓一致。由“If it…tomorrow, I won’t go shopping with my mom”可知，此处表示如果明天下雨，我就不和妈妈去购物了，it作主语，动词用第三人称单数。故选B。 5．—There is going to be a basketball game this evening. —That’s exciting! I will watch it ________ I’m free then. A．so B．but C．if D．before 【答案】C 【详解】句意：——今晚将会有一场篮球比赛。——那真令人兴奋！如果那时我有空，我会去看的。 考查连词辨析。so因此，用于表示结果或因果关系；but但是，用于表示对比或转折；if如果，用于表示条件；before在……之前，用于表示时间关系。空格前后为两个完整结构的句子，故缺少连词，根据空格前后的句意关系可知，此处表达的是如果到那时有空的话，将会观看，因此if“如果”符合语境。故选C。 6．You will feel happy at school ________ you get on well with your classmates. A．though B．because C．unless D．if 【答案】D 【详解】句意：如果你和同学相处融洽，你在学校会感到快乐。 考查连词辨析。though尽管，虽然；because因为；unless除非；if如果。分析句子可知，后句是前句的肯定条件，需用if“如果”，引导条件状语从句，故选D。 7．There ________ a sports meet next week if it ________. A．is going to have; doesn’t rain B．is going to be; doesn’t rain C．is going to be; won’t rain D．is going to have; won’t rain 【答案】B 【详解】句意：如果不下雨，下周我们将有运动会。 考查there be句型及时态。there be句型的将来时是“There is going to be”，可排除AD项；本句包括if引导的条件状语从句，主句是一般将来时，从句要用一般现在时，即“主将从现”。故选B。 8．________ you use your dictionary often, your spelling will improve. A．Whether B．If C．Though D．Unless 【答案】B 【详解】句意：如果你经常使用字典，你的拼写能力就会提高。 考查连词辨析。Whether是否；If如果；Though尽管；Unless除非。分析题干可知，经常使用字典是拼写能力提高的条件，结合选项，应用If引导此条件状语从句。故选B。 9．Talk to your teacher and you will get help ________ you have a problem. A．unless B．if C．until D．before 【答案】B 【详解】句意：如果你有问题，和老师谈谈，你会得到帮助的。 考查从属连词辨析。unless除非；if如果；until直到；before在……之前。 根据“you have a problem”可知，此处表示“如果有问题的话”，用if引导条件状语从句。故选B。 10．I will go on a trip with my classmates if it ________ tomorrow. A．won’t rain B．isn’t raining C．didn’t rain D．doesn’t rain 【答案】D 【详解】句意：如果明天不下雨，我将和同学们一起去旅行。 考查时态。根据“If it…tomorrow”可知，句子是if引导的条件状语从句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。从句主语it为第三人称单数，谓语动词用doesn’t rain。故选D。 11．—Would you like to help me clean the house this weekend? —I’d like to ________ I finish my homework. A．before B．though C．if D．so 【答案】C 【详解】句意：——这周末你想要帮我打扫房子吗？——如果我写完作业，我就帮。 考查条件状语从句。before在……之前；though尽管；if如果；so所以。后句是前句的肯定条件，即如果写完作业，就帮忙，用if引导条件状语从句。故选C。 12．I don’t know if he ________ here. If he ________, I will tell you. A．comes; comes B．will come; will come C．will come; comes D．comes; will come 【答案】C 【详解】句意：我不知道他是否会来这里。如果他来了，我会告诉你。 考查动词时态。第一个空是if引导的宾语从句，根据语境判断动作还未发生，因此用一般将来时态“will come”；第二个空是if引导的条件状语从句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时，主语是he，动词用第三人称单数形式comes。故选C。 13．— Many people are killing sharks (鲨鱼) for money. — If people keep killing sharks, there ________ any of them in the sea some day. A．may not be B．will not have C．don’t have D．aren’t 【答案】A 【详解】句意：——许多人为了钱而捕杀鲨鱼。——如果人们继续捕杀鲨鱼，未来某一天将不会有鲨鱼生活在海洋里了。 考查there be句型及If引导的条件状语从句的时态。根据“If people keep killing sharks, there...any of them in the sea some day.”可知句子考查there be结构，表示“某地有某物”，there be不与have连用，排除BC选项；if引导的条件状语从句用的是一般现在时，主句可用情态动词，遵循“主情从现”原则。故选A。 14．I wonder if Sally ________ to my party next Sunday. If she ________ to my party, I’ll be very happy. A．goes, goes B．will go, will go C．goes, will go D．will go, goes 【答案】D 【详解】句意：我想知道萨莉下星期天是否会去参加我的聚会。如果她去参加我的聚会，我会很高兴的。 考查时态。第一个句子是if引导的宾语从句，根据“next Sunday”可知从句用一般将来时will do；第二个句子是if引导的条件状语从句，遵循主将从现，从句用一般现在时，主语是she，谓语动词用单三。故选D。 15．If you share your happiness with others around you, you ________ happier. A．feel B．will feel C．are feeling D．felt 【答案】B 【详解】句意：如果你和周围的人分享你的快乐，你会感到更快乐。 考查动词时态。根据“If you share your happiness with others around you,”可知，这是if引导的条件状语从句，主句应使用一般将来时。故选B。 16．—I won’t go to Bill’s birthday party this Friday. —If you don’t, I _____, either. A．do B．won’t C．don’t 【答案】B 【详解】句意：——这个星期五我不会去参加比尔的生日聚会。——如果你不去，我也不去。 考查动词时态。if引导的条件状语从句，主句用一般将来时。故选B。 17．What ________ if he ________ a lot of money? A．will happen, will win B．happens; will win C．will happen, wins D．happens; wins 【答案】C 【详解】句意：如果他赢了很多钱会怎么样？ 考查if引导的条件状语从句。根据“What…if he…a lot of money?”可知，此处if表示“如果”，引导条件状语从句，应该遵循“主将从现”原则，故第一空为一般将来时，第二空是if引导的从句部分，用一般现在时。故选C。 18．Go to see a doctor ________ you are ill. A．but B．if C．and D．or 【答案】B 【详解】句意：如果你病了就去看医生。 考查连词辨析。but但是；if如果；and和；or或者。根据语境可知，空格后为假设性条件，故应用if引导条件状语从句，故选B。 19．— Emma failed her exams. I think she should work harder. — I agree. ________ she does, she’ll get good grades. A．If B．Because C．Before D．Though 【答案】A 【详解】句意：——艾玛考试不及格。我认为她应该更加努力。——我同意。如果她这样做，她就会取得好成绩。 考查连词。If如果；Because因为；Before在……之前；Though尽管。if引导的条件状语从句用一般现在时，主句用一般将来时，故选A。 20．Some people think they may talk to others _________ they have problems. A．though B．so C．if D．until 【答案】C 【详解】句意：有些人认为，如果他们有问题，他们可能会与他人交谈。 考查连词辨析。though尽管；so所以；if如果；until直到。根据“Some people think they may talk to others...they have problems.”可知前后是条件关系，表示“如果他们有问题，可能会与他人交谈”，故选C。 提升训练 1．（23-24八年级上·甘肃武威·期末）—Tim, our foreign teacher Ms. Green will go back to England next week. —Really? Let’s have a party to say goodbye to her ________ she is free this weekend. A．unless B．if C．though D．until 【答案】B 【详解】句意：——蒂姆，我们的外教格林女士下周将回英国。——真的？如果这个周末她有空，我们开个晚会向她告别吧。 考查连词。unless除非；if如果；though尽管；until直到。根据题干可知，给她开个告别晚会，应在是有空的条件下，因此用if引导条件状语从句，故选B。 2．（23-24八年级上·江西吉安·期末）Don’t bring any snacks to the party. If you ________ I’ll take them away. A．are B．will do C．did D．do 【答案】D 【详解】句意：不要带零食来聚会。如果你这么做，我就把它们拿走。 考查动词时态。if引导的条件状语从句，遵循“主将从现”，从句用一般现在时，此空应填do代替前文提到的“bring any snacks to the party”，故选D。 3．（23-24八年级上·湖北十堰·期末）—Did Tina finish her job? —I don’t know. But I think she _______ me a call if she finishes. A．gave B．gives C．is giving D．will give 【答案】D 【详解】句意：——Tina完成她的工作了吗？——我不知道，但是我认为她如果完成了会给我打电话。 考查if引导的条件状语从句。If引导的条件状语从句遵循主将从现原则。空格处是主句，应用一般将来时。故选D。 4．（23-24八年级上·湖北·期末）—Do you know if your cousin will come tomorrow? —No. But if he ________, I will call you to have a meal together. A．come B．comes C．will come D．is coming 【答案】B 【详解】句意：——你知道你表弟明天是否会来吗？——不知道。但是如果他来，我会叫你一起吃顿饭。 考查状语从句。根据“But if he..., I will call you to have a meal together.”可知，本句是If引导的条件状语从句，遵从“主将从现”。从句需用一般现在时，从句主语是he，为单三人称，谓语动词come需用单三形式comes。故选B。 5．（23-24八年级上·云南临沧·期末）If I ________ available next weekend, I ________ a trip to Beijing. A．am; take B．am; will take C．will be; take D．will be; will take 【答案】B 【详解】句意：如果我下周末有空的话，我将去北京旅行。 考查条件状语从句。take a trip“去旅行”。根据“If I…available next weekend”可知该句是if引导的条件状语从句，遵循“主将从现”原则。故选B。 6．（23-24八年级上·陕西西安·期末）Do you know if it ________ tomorrow? If it ________ tomorrow, I’ll wear more clothes. A．snows, will snow B．will snow, will snow C．snows, snows D．will snow, snows 【答案】D 【详解】句意：你知道明天会不会下雪吗？如果下雪，我将要穿更多的衣服。 考查时态和条件状语从句。第一句是宾语从句，主句一般现在时，从句根据时间状语tomorrow可知，用一般将来时，排除选项A和C；第二句是if引导的条件状语从句，遵循主将从现原则，主句一般将来时，从句一般现在时，从句主语是it，谓语动词应用第三人称单数形式，排除选项B。故选D。 7．（23-24八年级上·河北石家庄·期末）________ people have problems, they should talk to others to solve them. A．If B．Unless C．Until D．Which 【答案】A 【详解】句意：如果人们有问题，他们应该与他人交谈来解决问题。 考查连词辨析。If如果；Unless除非；Until直到；Which哪一个。“people have problems”是“they should talk to others to solve them”的条件，用If引导条件状语从句，故选A。 8．（23-24八年级上·湖北武汉·期末）—What do you plan for the coming winter vacation? —If I ________ the exam, I ________ to Sanya to have a great time. A．pass, fly B．will pass, fly C．pass, will fly D．will pass, will fly 【答案】C 【详解】句意：——你对即将到来的寒假有什么计划？——如果我通过了考试，我将飞往三亚度过开心时光。 考查条件状语从句。pass通过；fly乘飞机。分析句子可知，本句为“If”引导的条件状语从句，采用“主将从现”的原则，即主句用一般将来时，从句用一般现在时。一般将来时的结构为“主语+will+动词原形”；从句的主语为“I”，后面的动词应该用原形。故选C。 9．（23-24八年级上·湖北孝感·期末）—Will you go to the zoo with them tomorrow? —Yes. But if it ________, we will watch TV at home. A．rain B．rains C．will rain D．raining 【答案】B 【详解】句意：——你明天会和他们一起去动物园吗？——是的。但是如果下雨，我们就在家看电视。 考查条件状语从句。rain“下雨”。根据“if”以及“we will watch TV”并结合语境，该句是if引导的条件状语从句，从句使用一般现在时，从句主语是“if”，动词rain应填动词的三单形式。故选B。 10．（22-23八年级上·四川广元·期末）You can taste the delicious Yunnan Rice Noodles ________ you go to Yunnan. A．if B．though C．because D．unless 【答案】A 【详解】句意：如果你去云南，你可以品尝到美味的云南米线。 考查从属连词辨析。if如果；though尽管；because因为；unless除非。分析句子可知，“you go to Yunnan”是“You can taste the delicious Yunnan Rice Noodles”的条件，应用if“如果”引导条件状语从句。故选A。 11．（23-24八年级上·湖北武汉·期末）— Do you know when Tom will come back tomorrow? — Sorry, I don’t know. If he __________ back, I’ll tell you. A．comes B．come C．will come D．may come 【答案】A 【详解】句意：——你知道汤姆明天什么时候回来吗？——对不起，我不知道。如果他回来，我会告诉你的。 考查时态。come“来”，if引导的条件状语从句，用一般现在时，主句用一般将来时，主语he是第三人称单数，谓语用第三人称单数形式，故选A。 12．（23-24八年级上·四川广元·期末）—How can I do better in Math? —________ you think twice whenever you do Math, you can do much better. A．Unless B．If C．However D．Can 【答案】B 【详解】句意：——我怎样才能在数学方面做得更好？ ——如果你做数学题时三思而后行，你会做得更好。 考查连词辨析。Unless除非；If如果；However然而；Can可以。分析题干可知，前句是后句的条件，表示假设，空处填if引导条件状语从句。故选B。 13．（23-24八年级上·甘肃武威·期末）I can’t stand it if you ________ the same mistake again tomorrow. A．will make B．makes C．are going to make D．make 【答案】D 【详解】句意：如果你明天再犯同样的错误，我无法忍受。 考查动词时态。if引导的条件状语从句，遵循“主情从现”原则，从句用一般现在时，主语是you，动词make用原形，故选D。 14．（23-24八年级上·吉林松原·期末）—If Tony to this party, we will have a great time. —Yes. He’s so funny that he always makes us laugh. A．will come B．came C．coming D．comes 【答案】D 【详解】句意：——如果Tony来这个聚会，我们就会玩得开心。——是的。他是如此的有趣，以至于总是让我们发笑。 考查if引导条件状语从句的主将从现的用法。come“来”，动词。根据“If Tony...to this party, we will have a great time.”可知，此句包含if引导的条件状语从句，主句时态是一般将来时，那么从句时态是一般现在时，从句主语Tony是单数，所以动词come要变成第三人称单数形式comes，故选D。 15．（22-23八年级上·河北廊坊·期末）—Will you go to Tom’s birthday party? —If you _______, I _______. A．go; go B．will go; will go C．will go; go D．go; will go 【答案】D 【详解】句意：——你会去汤姆的生日聚会吗？——如果你去，我就去。 考查if引导的条件状语从句。根据题干，可知考查if引导的条件状语从句，从句用一般现在时，主句用will+动词原形。故选D。 16．（21-22八年级上·广东深圳·期末）—Don’t promise anything unless you’re 100 percent sure. —I feel sorry for breaking my promise and I won’t in the future. A．if you’re B．although you’re C．as you are D．if you aren’t 【答案】D 【详解】句意：——除非你百分之百确定，不要承诺任何事情。——我为违背我的承诺感到抱歉，以后我不会再这样做了。 考查条件状语从句和从属连词的用法。If作为从属连词，意为“如果”，本题中将“if you aren’t”替换“unless you’re”，意为“如果你不是百分之百确定，不要承诺任何事情”，与原句的意思相符。故选D。 17．（22-23八年级上·湖北孝感·期末）You’d better travel around Canada with a guide ________ you want to know more about its culture. A．unless B．until C．though D．if 【答案】D 【详解】句意：如果你想更多地了解加拿大的文化，最好在导游的陪同下环游加拿大。 考查连词辨析。unless除非；until到……为止；though虽然，尽管；if如果。根据“You’d better travel around Canada with a guide... you want to know more about its culture.”可知，此处应是由if引导的条件状语从句。故选D。 18．（22-23八年级上·湖北黄冈·期末）—What will he do if he ________ to school late tomorrow morning? —I think he should say sorry to the teacher. A．goes B．go C．will go D．is going 【答案】A 【详解】句意：——如果他明天早上上学迟到了，他会做什么？——我认为他应该向老师道歉。 考查条件状语从句。此句为if引导的条件状语从句，主句用一般将来时，从句用一般现在时，从句为“if he…to school late tomorrow morning?”，此句用一般现在时，主语为“he”，谓语动词用三单形式，“go”的三单加es。故选A。 19．（22-23八年级上·湖北十堰·期末）—When will you go home this afternoon? —________ I finish all my work, I am sure I can go by 5:00. A．Although B．So C．If D．So that 【答案】C 【详解】句意：——今天下午你什么时候回家？——如果我完成了所有的工作，我确信我能在5点前走。 考查从属连词辨析。Although虽然；So所以；If如果；So that以便于。“I finish all my work”是“I am sure I can go by 5:00”的条件，用if引导条件状语从句，故选C。 20．（22-23八年级上·吉林四平·期末）If you ________ Jack, please ask him if he ________ to work in the factory tomorrow. A．see; will go B．will see; goes C．see; goes 【答案】A 【详解】句意：如果你看到杰克，请问问他明天是否去工厂上班。 考查if引导的从句。根据语境及句意可知，第一空考查if引导的条件状语从句，应用一般现在时；第二空考查if引导的宾语从句，当主句为祈使句时，宾语从句根据实际情况用相应的时态，所以根据句尾tomorrow，宾语从句应用一般将来时。故选A。 $$