Unit 8 Grammar in Use 知识点讲义 2025-2026学年仁爱科普版英语八年级下册

八年级英语下册Unit8知识点-Grammar in Use讲义 第一部分：The suffix -ion（后缀 -ion） 一、语法讲解 后缀 -ion 的用法 后缀 -ion 加在动词后面，构成名词，表示"行为、状态、结果"等。 动词 名词 中文意思 act（表演；行动） action 行动；动作 communicate（交流） communication 交流；沟通 protect（保护） protection 保护 discuss（讨论） discussion 讨论 collect（收集） collection 收藏；收集 create（创造） creation 创造；作品 connect（连接） connection 连接 invent（发明） invention 发明 educate（教育） education 教育 predict（预测） prediction 预测 decide（决定） decision 决定 express（表达） expression 表达；表情 impress（给人印象） impression 印象 attract（吸引） attraction 吸引力 suggest（建议） suggestion 建议 二、重点句型解析 1. "The boy acts like a monkey. His action tells others the answer." - 意思：这个男孩像猴子一样行动。他的动作告诉别人答案。 - 知识点：act（动词）→ action（名词） - 仿写：She __________ (表演) in the play. Her __________ (表演) was wonderful. 2. "We communicate more often than before. Communication makes people closer." - 意思：我们比以前更常交流。交流使人更亲近。 - 知识点：communicate（动词）→ communication（名词） - 仿写：We __________ (交流) every day. Good __________ (交流) is important. 3. "We protect the earth, and the earth will become a better home because of our protection." - 意思：我们保护地球，地球会因为我们的保护而变得更好。 - 知识点：protect（动词）→ protection（名词）；because of 因为（后接名词） - 仿写：We should __________ (保护) animals. We need their __________ (保护) too. 4. "How to spend money wisely needs further discussion in the meeting." - 意思：如何明智地花钱需要在会议上进一步讨论。 - 知识点：discuss（动词）→ discussion（名词）；further 进一步的 - 仿写：We need to __________ (讨论) this plan. After __________ (讨论), we made a decision. 5. "Some companies collect information about customers' interests." - 意思：一些公司收集关于顾客兴趣的信息。 - 知识点：collect（动词）收集 - 仿写：My hobby is __________ (收集) stamps. My __________ (收藏) is very valuable. 6. "This place is really an amazing creation of nature." - 意思：这个地方真是大自然的惊人创造。 - 知识点：create（动词）→ creation（名词）；amazing 令人惊奇的 - 仿写：Artists __________ (创造) beautiful things. This painting is a great __________ (创造). 7. "Before you pay, you should connect your phone to the internet." - 意思：付款前，你应该把手机连接到互联网。 - 知识点：connect（动词）连接；internet 互联网 - 仿写：The __________ (连接) is not stable. Please __________ (连接) your device. 8. "The invention of digital money makes cash appear less in our life." - 意思：数字货币的发明使现金在我们生活中出现得更少。 - 知识点：invent（动词）→ invention（名词）；digital money 数字货币；cash 现金 - 仿写：The __________ (发明) of the internet changed the world. Who __________ (发明) the telephone? 9. "People can use it for things like education, transportation and other services." - 意思：人们可以把它用于教育、交通和其他服务。 - 知识点：education 教育；transportation 交通 - 仿写：__________ (教育) is important for everyone. 10. "There is a prediction that with the rapid development of digital economy, digital money is likely to become an important way of payment." - 意思：有一种预测认为，随着数字经济的快速发展，数字货币很可能成为一种重要的支付方式。 - 知识点：predict（动词）→ prediction（名词）；rapid development 快速发展；digital economy 数字经济；way of payment 支付方式 - 仿写：The weather __________ (预报) says it will rain tomorrow. I __________ (预测) you will succeed. 三、配套练习 Activity 2 选择正确的词 阅读句子，选择正确的词。 1. How to spend money wisely needs further __________ (discuss / discussion) in the meeting. 2. Some companies __________ (collect / collection) information about customers' interests. 3. This place is really an amazing __________ (create / creation) of nature. 4. Before you pay, you should __________ (connect / connection) your phone to the internet. 第二部分：If-conditional clause（if 条件状语从句） 一、语法讲解 if 条件状语从句的用法 if 引导的条件状语从句表示"如果……，就会……"。基本结构为：if 从句（一般现在时），主句（一般将来时/情态动词/祈使句）。 If 从句 主句 用法 If + 一般现在时 一般将来时（will） 表示将来可能发生的事情 If + 一般现在时 情态动词（can/may/must等） 表示可能、允许或必须 If + 一般现在时 祈使句 表示建议、命令等 注意事项： - "主将从现"原则：主句用将来时，从句用一般现在时。 - 如果主句有情态动词或祈使句，从句仍用一般现在时。 二、重点句型解析 1. "If I have pocket money, I will save it in my piggy bank." - 意思：如果我有零花钱，我会把它存到我的存钱罐里。 - 知识点：if 引导条件状语从句，从句用一般现在时，主句用一般将来时（will + 动词原形）；pocket money 零花钱；piggy bank 存钱罐 - 仿写：If it __________ (rain) tomorrow, I __________ (stay) at home. 2. "If I have a piggy bank, I will put my pocket money into it, too." - 意思：如果我有一个存钱罐，我也会把我的零花钱放进去。 - 知识点：too 也（用于肯定句句末） - 仿写：If I __________ (have) time, I __________ (go) with you, too. 3. "If you buy that purple blouse, you will have to use your pocket money." - 意思：如果你买那件紫色衬衫，你就得用你的零花钱。 - 知识点：purple 紫色的；blouse 女式衬衫；have to 不得不 - 仿写：If you __________ (want) that toy, you __________ (have to) save money. 4. "If you save enough money, you can buy your favorite books." - 意思：如果你存够钱，你就可以买你最喜欢的书。 - 知识点：主句用情态动词 can 表示可能；enough 足够的 - 仿写：If you __________ (study) hard, you __________ (can) pass the exam. 5. "If you want to go shopping, make a shopping list first." - 意思：如果你想去购物，先列个购物清单。 - 知识点：主句用祈使句表示建议；shopping list 购物清单 - 仿写：If you __________ (feel) tired, __________ (have) a rest. 6. "If my parents give me pocket money, I will save some in my piggy bank." - 意思：如果我父母给我零花钱，我会存一些在存钱罐里。 - 知识点：give sb. sth. 给某人某物 - 仿写：If my friend __________ (ask) me, I __________ (help) him. 7. "If I have enough pocket money in my piggy bank, I will save it in the bank." - 意思：如果我的存钱罐里有足够的零花钱，我会把它存到银行。 - 知识点：in the bank 在银行里 - 仿写：If I __________ (be) free, I __________ (go) to the park. 8. "If I then want to buy something, I will ..." - 意思：如果那时我想买东西，我就会…… - 知识点：then 然后，那时 - 仿写：If you __________ (need) help, just __________ (tell) me. 三、if 条件句用法总结表 类型 If 从句 主句 例句 将来可能 一般现在时 will + 动词原形 If it rains, we will stay home. 可能/允许 一般现在时 can/may + 动词原形 If you finish, you can go out. 建议/命令 一般现在时 祈使句 If you are tired, have a rest. 配套练习 一、单项选择 ( ) 1. If it ______ tomorrow, we will stay at home. A. rain B. rains C. will rain D. raining ( ) 2. If you study hard, you ______ pass the exam. A. can B. could C. will can D. are can ( ) 3. If you want to go shopping, ______ a list first. A. make B. to make C. making D. makes ( ) 4. I will call you if I ______ time. A. have B. will have C. had D. has ( ) 5. If she ______ enough money, she will buy a new dress. A. save B. saves C. will save D. saving ( ) 6. You can play outside if you ______ your homework. A. finish B. will finish C. finished D. finishing ( ) 7. If he ______ late, we will go without him. A. is B. will be C. be D. are ( ) 8. ______ me if you need help. A. Tell B. To tell C. Telling D. Tells 二、用所给动词的正确形式填空 1. If it __________ (rain) tomorrow, we __________ (stay) at home. 2. If you __________ (study) hard, you __________ (can) get good grades. 3. If she __________ (have) enough money, she __________ (buy) a new bike. 4. If they __________ (come) to the party, I __________ (be) very happy. 5. If you __________ (feel) tired, __________ (have) a rest. 6. We __________ (go) to the beach if it __________ (be) sunny tomorrow. 7. If he __________ (not come) on time, we __________ (start) without him. 8. You __________ (can) borrow my book if you __________ (promise) to return it. 三、翻译句子 1. 如果明天下雨，我们就待在家里。 ________________________________________________ 2. 如果你努力学习，你就能通过考试。 ________________________________________________ 3. 如果你想去购物，先列个清单。 ________________________________________________ 4. 如果我有时间，我会帮你的。 ________________________________________________ 5. 如果他来了，告诉他等我一下。 ________________________________________________ 6. 如果你需要帮助，给我打电话。 ________________________________________________ 7. 如果她存够钱，她会买一辆新自行车。 ________________________________________________ 8. 如果天气好，我们去公园吧。 ________________________________________________ 四、连词成句 1. if / rain / tomorrow / stay / we / will / home / at / it ________________________________________________ 2. you / if / study / can / pass / you / hard / the exam ________________________________________________ 3. go / if / you / shopping / want / a / make / list / to ________________________________________________ 4. I / if / have / will / help / you / I / time ________________________________________________ 5. she / if / enough / will / save / money / buy / she / a / new / bike ________________________________________________ 教师版（含答案） 第一部分：The suffix -ion 句型解析答案 1. She acts in the play. Her action was wonderful. 2. We communicate every day. Good communication is important. 3. We should protect animals. We need their protection too. 4. We need to discuss this plan. After discussion, we made a decision. 5. My hobby is collecting stamps. My collection is very valuable. 6. Artists create beautiful things. This painting is a great creation. 7. The connection is not stable. Please connect your device. 配套练习答案 Activity 2 1. discussion 2. collect 3. creation 4. connect 第二部分：If-conditional clause 句型解析答案 1. If it rains tomorrow, I will stay at home. 2. If I have time, I will go with you, too. 3. If you want that toy, you will have to save money. 4. If you study hard, you can pass the exam. 5. If you feel tired, have a rest. 6. If my friend asks me, I will help him. 7. If I am free, I will go to the park. 8. If you need help, just tell me. 配套练习答案 一、单项选择 1. B 2. A 3. A 4. A 5. B 6. A 7. A 8. A 二、用所给动词的正确形式填空 1. rains, will stay 2. study, can 3. has, will buy 4. come, will be 5. feel, have 6. will go, is 7. doesn't come, will start 8. can, promise 三、翻译句子 1. If it rains tomorrow, we will stay at home. 2. If you study hard, you can pass the exam. 3. If you want to go shopping, make a list first. 4. If I have time, I will help you. 5. If he comes, tell him to wait for me. 6. If you need help, call me. 7. If she saves enough money, she will buy a new bike. 8. If the weather is good, let's go to the park. 四、连词成句 1. If it rains tomorrow, we will stay at home. 2. If you study hard, you can pass the exam. 3. If you want to go shopping, make a list. 4. If I have time, I will help you. 5. If she saves enough money, she will buy a new bike. 1 学科网（北京）股份有限公司 $