Unit 11 语法专练 2025-2026学年仁爱科普版八年级英语下册

仁爱版八下第11单元语法专练 宾语从句that / whether / if 一、that引导的宾语从句 1. that的用法 that用于引导陈述句作宾语,在从句中不充当任何成分,也没有实际意义。 基本结构: 主句 + that + 陈述句 例句: I think that he is a good student. 我认为他是个好学生。 She said that she would come tomorrow. 她说她明天会来。 We know that the earth is round. 我们知道地球是圆的。 2. that的省略问题 在一般情况下,that可以省略,尤其是在口语中和常见的动词后。 可以省略的情况: I think (that) you are right. 我想你是对的。 He said (that) he liked anime. 他说他喜欢动漫。 不能省略的情况: 当有两个并列的that从句时,第二个that不能省略。 He said that he liked anime and that he watched it every day. 他说他喜欢动漫,而且每天都看。 当主句的谓语动词和that从句之间有插入语时,that不能省略。 She said, that in her opinion, the movie was great. 她说,在她看来,这部电影很棒。 当that从句作介词的宾语时,that不能省略。(但这种情况较少见) 二、whether/if引导的宾语从句 1. whether和if的共同用法 whether和if都表示“是否”,用于引导一般疑问句转换而来的宾语从句,在从句中不充当成分,但有意义。 基本结构: 主句 + whether/if + 陈述句 例句: I wonder if he will come. 我想知道他是否会来。 She asked whether I liked the movie. 她问我是否喜欢那部电影。 I don't know if it will rain tomorrow. 我不知道明天是否会下雨。 2. whether和if的共同点 在许多情况下,whether和if可以互换使用,尤其是在口语中。 Do you know if/whether he is a teacher? 你知道他是不是老师吗? I'm not sure if/whether she can help us. 我不确定她是否能帮我们。 He asked if/whether I had finished my homework. 他问我是否完成了作业。 三、whether和if的区别(重点考点) 在以下几种情况下,只能用whether,不能用if: 区别一:句末有or not时 当从句末尾出现or not时,必须用whether。 I don't know whether he will come or not. (√) I don't know if he will come or not. ( ) She asked whether I liked the film or not. (√) She asked if I liked the film or not. ( ) 注意: whether or not可以连在一起放在句首,但if不可以。 Whether or not he will come is unknown. (√) If or not he will come is unknown. ( ) 区别二:作介词宾语时 当从句作介词的宾语时,必须用whether。 It depends on whether it rains tomorrow. (√) It depends on if it rains tomorrow. ( ) I'm thinking about whether I should go. (√) I'm thinking about if I should go. ( ) 区别三:后面接不定式时 whether后面可以直接跟动词不定式to do,if不可以。 I don't know whether to go or stay. (√) I don't know if to go or stay. ( ) He is considering whether to accept the job. (√) He is considering if to accept the job. ( ) 区别四:引导主语从句且位于句首时 当从句在主句前面作主语时,必须用whether。 Whether he will come is still a question. (√) If he will come is still a question. ( ) Whether she likes it doesn't matter. (√) If she likes it doesn't matter. ( ) 区别五:与discuss等动词连用时 某些动词如discuss后接宾语从句时,习惯用whether。 We discussed whether we should go. (√) We discussed if we should go. (较少用) 第二部分:常见动词与连接词的搭配 一、常用that引导的宾语从句的动词 这些动词后常接that从句,表示陈述或观点: think 认为 believe 相信 hope 希望 wish 祝愿 say 说 tell 告诉 know 知道 understand 理解 see 明白 find 发现 feel 感觉 agree 同意 suggest 建议 例句: I hope that you can come to my party. 我希望你能来我的派对。 He found that the book was interesting. 他发现这本书很有趣。 We all agree that we should start early. 我们都同意应该早点出发。 二、常用whether/if引导的宾语从句的动词 这些动词后常接whether/if从句,表示不确定或疑问: ask 问 wonder 想知道 doubt 怀疑 not sure 不确定 not know 不知道 see 看看是否 find out 查明 decide 决定 例句: I wonder if he is at home. 我想知道他在不在家。 Let's see whether the store is open. 我们去看看商店是否开着。 I doubt if he will come on time. 我怀疑他是否会准时来。 三、只能用whether的动词 少数动词后习惯用whether,较少用if: discuss 讨论 consider 考虑 例句: We discussed whether we should buy a new car. 我们讨论了是否应该买新车。 He is considering whether to take the job. 他正在考虑是否接受这份工作。 第三部分:专项练习题 一、单项选择 ( ) 1. I think _ he is a good student. A. that B. whether C. if D. what ( ) 2. She asked _ I liked the movie. A. that B. if C. what D. which ( ) 3. I don't know _ he will come or not. A. that B. if C. whether D. what ( ) 4. It depends on _ it rains tomorrow. A. that B. if C. whether D. what ( ) 5. He said _ he would come to my birthday party. A. that B. if C. whether D. when ( ) 6. I'm not sure _ he is at home now. A. that B. if C. what D. which ( ) 7. We discussed _ we should go there by bus. A. that B. if C. whether D. when ( ) 8. _ he will pass the exam is still a question. A. That B. If C. Whether D. What ( ) 9. I don't know _ to stay or leave. A. that B. if C. whether D. what ( ) 10. He asked me _ I had finished my homework. A. that B. if C. what D. which ( ) 11. I think _ he is right and _ we should follow his advice. A. that; that B. that; / C. /; that D. /; / ( ) 12. She wondered _ her mother would buy her a gift. A. that B. if C. what D. which ( ) 13. I'm thinking about _ I should tell him the truth. A. that B. if C. whether D. what ( ) 14. He said, _ in fact, he was very tired. A. that B. if C. whether D. what ( ) 15. I doubt _ he will win the game. A. that B. if C. what D. which 二、用that, whether或if填空 1. I believe _ he is an honest boy. 2. She asked _ I liked watching anime. 3. I don't know _ he will come to the party or not. 4. He said _ he had seen the movie before. 5. It all depends on _ they will support us. 6. I'm not sure _ she can dance well. 7. We all know _ the earth goes around the sun. 8. He wondered _ his friend would visit him. 9. Please tell me _ you need help. 10. I think _ you should try your best. 11. She asked me _ I had finished my homework. 12. I don't know _ to accept the invitation. 13. He is considering _ he should change his job. 14. _ she will come doesn't matter. 15. I hope _ you can enjoy yourself. 三、合并句子(将两个句子合并为含宾语从句的复合句) 1. He is a good student. I think. 2. Will she come to the party? She asked. 3. Does he like watching anime? I wonder. 4. The earth is round. The teacher told us. 5. Can you help me? I don't know. 6. He will pass the exam. I believe. 7. Is the library open? Could you tell me? 8. She has finished her homework. She said. 9. Should I go there by bus? I'm considering. 10. He won the first prize. We were happy. 四、改错题(找出错误并改正) 1. I think if he is a good teacher. 2. She asked me that I liked the movie. 3. I don't know if he will come or not. 4. It depends on if it rains tomorrow. 5. He said he will come tomorrow. (主句said是过去时) 6. I'm not sure that he is at home. 7. We discussed if we should go there. 8. If he will come is still unknown. 9. I don't know if to go or stay. 10. He asked me where is the library. 五、翻译句子(使用宾语从句) 1. 我认为他是一名好学生。 2. 她问我是否喜欢动漫。 3. 我不知道他明天是否会来。 4. 老师告诉我们地球绕着太阳转。 5. 我想知道他是否在家。 6. 这取决于明天是否下雨。 7. 他说他已经完成了作业。 8. 我不确定是否要接受这份工作。 9. 我们都相信他会成功。 10. 她想知道我为什么迟到。 第四部分:参考答案 一、单项选择答案 1. A(that引导陈述句,think后常用that) 2. B(ask后接表示“是否”的从句,if/whether均可,选项中只有if) 3. C(句末有or not,只能用whether) 4. C(介词on后,只能用whether) 5. A(引导陈述句,用that) 6. B(not sure后接表示“是否”的从句) 7. C(discuss后习惯用whether) 8. C(句首主语从句,只能用whether) 9. C(不定式前,只能用whether) 10. B(ask后接表示“是否”的从句) 11. C(第一个that可省略,第二个并列从句的that不能省) 12. B(wonder后接表示“是否”的从句) 13. C(介词about后,只能用whether) 14. A(有插入语in fact,that不能省略) 15. B(doubt后接表示“是否”的从句,肯定句中常用if/whether) 二、用that, whether或if填空答案 1. that(相信某件事) 2. if/whether(问是否) 3. whether(句末有or not) 4. that(陈述说过的话) 5. whether(介词on后) 6. if/whether(不确定是否) 7. that(客观真理) 8. if/whether(想知道是否) 9. if/whether(告诉是否) 10. that(认为) 11. if/whether(问是否) 12. whether(不定式前) 13. whether(consider后习惯用whether) 14. Whether(句首主语从句) 15. that(希望) 三、合并句子答案 1. I think (that) he is a good student. 2. She asked if/whether she would come to the party. 3. I wonder if/whether he likes watching anime. 4. The teacher told us (that) the earth is round. 5. I don't know if/whether you can help me. 6. I believe (that) he will pass the exam. 7. Could you tell me if/whether the library is open? 8. She said (that) she had finished her homework. 9. I'm considering whether to go there by bus. 10. We were happy that he won the first prize. 四、改错题答案 1. if 改为 that(think后接陈述句,不是“是否”) 2. that 改为 if/whether(ask后是疑问,不是陈述) 3. if 改为 whether(句末有or not) 4. if 改为 whether(介词on后) 5. will 改为 would(主句过去时,从句时态要呼应) 6. that 改为 if/whether(not sure后是疑问) 7. if 改为 whether(discuss后习惯用whether) 8. If 改为 Whether(句首主语从句) 9. if 改为 whether(不定式前) 10. where is the library 改为 where the library is(语序错误) 五、翻译句子答案 1. I think (that) he is a good student. 2. She asked me if/whether I liked anime. 3. I don't know if/whether he will come tomorrow. 4. The teacher told us (that) the earth goes around the sun. 5. I wonder if/whether he is at home. 6. It depends on whether it rains tomorrow. 7. He said (that) he had finished his homework. 8. I'm not sure whether to accept this job. 9. We all believe (that) he will succeed. 10. She wondered why I was late. 第五部分:考点总结 高频考点清单 1. that的省略:一般情况下可省,但并列从句的第二个that不能省,有插入语时不能省。 2. whether和if的区别: or not前用whether 介词后用whether 不定式前用whether 句首主语从句用whether 3. 语序问题:宾语从句必须用陈述语序。 4. 时态呼应:主句过去时,从句要用相应的过去时态,客观真理除外。 易错点提醒 最容易犯的错误: 错误一:忘记语序 误:I don't know where is he. 正:I don't know where he is. 错误二:or not前用if 误:I don't know if he will come or not. 正:I don't know whether he will come or not. 错误三:介词后用if 误:It depends on if it rains. 正:It depends on whether it rains. 错误四:that的多余或缺失 在不需要that的地方加that,或在该用whether的地方用了that。 第六部分:进阶挑战题 综合填空(用适当的连接词填空) Dear Tom, I'm writing to tell you something about my favorite hobby. I think (1)_ watching anime is really interesting. Many people ask me (2)_ I like it so much. The truth is (3)_ I can learn a lot from it. Yesterday, my friend asked me (4)_ I had watched the latest episode. I told him (5)_ I had, and we discussed (6)_ the story would develop. I'm not sure (7)_ he agrees with me, but that's okay. My parents often wonder (8)_ watching anime affects my study. I explained to them (9)_ I always finish my homework first. Now they understand (10)_ it's not a waste of time. I hope (11)_ you can share your hobbies with me too. Please tell me (12)_ you like doing in your free time. Best wishes, Li Hua 进阶挑战题答案: 1. that(think后接陈述句) 2. why(特殊疑问词,表示原因) 3. that(表语从句,表示事实) 4. if/whether(ask后表示“是否”) 5. that(told后接陈述句) 6. how(discuss后接how,表示方式) 7. if/whether(not sure后表示“是否”) 8. if/whether(wonder后表示“是否”) 9. that(explain后接陈述句) 10. that(understand后接陈述句) 11. that(hope后接陈述句) 12. what(tell me后接what,作like的宾语) 学科网(北京)股份有限公司 $