Unit 3 Grammar in Use课件 2025 2026学年仁爱科普版八年级英语上册

该初中英语课件围绕否定前缀（un-, dis-, im-, in-, non-, mis-）和need的实义/情态动词用法展开，通过“Look and say”图片对比引出反义词对，逐步归纳前缀含义，再结合练习与生活情境（如描述坏习惯）搭建从认知到应用的学习支架。 其亮点在于以新课标核心素养为导向，语言能力上通过熬夜等生活实例让学生用否定前缀词汇描述危害、need句式提建议，思维品质上引导归纳前缀规则、区分need用法，学习能力上小组讨论与任务型活动促进主动运用。小结用表格和例句清晰梳理知识，助力学生提升语言运用与健康意识，教师教学环节连贯且可操作性强。

Sound Body, Sound Mind Unit 3 Grammar in Use 英语仁爱科普版八年级上册 Learning objectives 通过本课时的学习，学生能够： 1. 在语境中识别并归纳常见否定前缀（un-，dis-，im-，in-，non-， mis-）的含义及适用场景； 2. 区分并正确使用need作为实义动词和情态动词的用法； 3. 结合生活中的坏习惯，运用否定前缀词汇描述其危害，并使用 need的正确句式给出建议，培养健康生活意识和良好的行为习惯。 重点 重点 Look and say What can you find in the pictures? The dog is happy. The dog is not happy/unhappy. Look and say What can you find in the pictures? He likes eating broccoli. He does not like/dislikes eating broccoli. Look and say It’s polite to throw garbage into the trash can. It’s not polite/impolite to litter everywhere. What can you find in the pictures? Look and say These sentences are correct. These sentences are not correct/incorrect. What can you find in the pictures? Look and say They can understand each other. They do not understand /misunderstand each other. What can you find in the pictures? Look and say He is a somker. She is not a smoker/a non-smoker. What can you find in the pictures? Read and answer What do these words mean? 1. The dog is not unhappy. 2. He dislikes eating broccoli. 3. It’s impolite to litter everywhere. 4. These sentences are incorrect. 5. They misunderstand each other. 6. She is a nonsmoker. = = = = = = not happy not like not polite not correct not understand not a smoker The prefixes non-, dis-, un-, mis-, in- and im- usually express the ___________ meanings of the original words. opposite Look and change Change the words into their opposite forms by adding prefixes. He became a _____smoker in order to keep healthy. Sea food may seem to _____agree with some people. Hamburgers may taste delicious, but it is _____healthy to eat too many of them. It is _____correct to do sports with an empty stomach. non dis un in Think and fill Fill in the blanks with the correct form of the given words. dislike uncomfortable impossible nonstop misplace 1. It is ___________ to keep healthy without good living habits. 2. Don’t eat too much junk food, or you will feel ____________. 3. She ____________ ice cream because it’s bad for her teeth. 4. My sister’s room is tidy, and she never ____________ her things. 5. We felt very tired after a long and ____________ walk. uncomfortable impossible dislikes misplaces nonstop Think and fill Read the text and fill in the blanks with the words in the box. impatient nonsense uncomfortable improper A(n) ____________ habit does a lot of harm to people. For example, staying up late is very bad for people’s health. Clearly, they will feel sleepy and ____________ next day. What’s worse, people will become ____________ and they may even forget important dates. Sometimes, they will talk ____________ because their minds are not clear. To get rid of the habit, people need to do some sports and sleep early. A healthy body and a clear mind will make them feel good all day. impatient nonsense uncomfortable improper Let’s summarize prefixes original words opposites un- healthy, happy unhealthy, unhappy dis- agree, like disagree, dislike non- smoker, stop nonsmoker, nonstop im- possible, polite impossible, impolite mis- place, understand misplace, misunderstand Discuss and write Work in groups. Choose a bad habit and talk about the harm it does to people. Use at least three words which may contain the negative prefixes im-, in-, un-, dis-, non- or mis-. Bad Habit Harm Stay up late 1. Clearly, people will feel sleepy and uncomfortable the next day. 2. What’s worse, people will become impatient and they may even forget important dates. 3. Sometimes, they will speak nonsense because their minds are unclear. 4. ... Read and complete Read the dialogue and complete the chart. What’s the boy’s problem? What’s the girl’s advice? He stayed up to watch the soccer game last night. He needs to get some sleep now. He can watch the games online the next day. He needn’t stay up. He needs to take care of himself. Need ____________,没有时态、人称和数的变化。 ____________,有时态、人称和数的变化。 Read and work out What’s the part of speech of “need” in each sentence? 1. He needn’t stay up. 2. He needs to take care of himself. Read the sentences and work out the rules. 情态动词 实义动词 Read and work out Read the sentences and work out the rules. 1. He needn’t stay up. 2. You needn’t hurry. 3. —Need I take off my shoes? —No, you needn’t. Need 情态动词 没有时态、人称和数的变化 后跟动词 1. ________ 常用于2. ______ 句，意为“不必做某事”； 常用于3. ______ 句，意为“有必要做某事吗”，用于征求意见。 原形 否定 疑问 Read and work out Read the sentences and work out the rules. 1. He needs to take care of himself. 2. She didn’t need help. 3. My jacket needs washing (=to be washed). 4. My mom needs me to help with housework. Need 实义动词 有时态、人称和数的变化 后跟1. ______、代词、_____________、_____________（主动表示被动）、_____________（复合宾语）。 否定形式需借助助动词2.“___________ + not”。 名词 动词不定式 动词-ing sb. to do sth. do/does/did Read and circle Read the sentences and circle the correct words. 1. He (need/needs) to take a break now. He looks so tired. 2. We (need/needn’t) to play sports every day to keep healthy. 3. You(needn’t/ don’t need) store so much food in the fridge. 4. You (needn’t/don’t need) to worry about your grades. Just relax. 5. Both Maria and Meimei (need/needn’t) to lose weight. Let’s summarize 实义动词 情态动词 需要某人或某物：_________________ 需要做某事：_________________ 需要被做：_________________ 需要某人做某事：_________________ 不需要做某事：_______________________________ 不必做某事：_________________ ——某人需要做某事吗？______________________ ——是的，需要。/不，不需要 ____________________________________________ need need sb./sth. need to do sth. need doing need sb. to do sth. do/does/did not need to do sth. needn’t do sth. Need sb. do sth.? Yes, sb. need./No, sb. needn’t. Talk and share Work in groups. Continue to give advice on the bad habit with need. Then, give a presentation about the bad habit, its harm and the advice. Bad habit Harm Advice Stay up late 1. Clearly, people will feel sleepy and uncomfortable the next day. 2. What’s worse, people will become impatient and they may even forget important dates. 3. Sometimes, they will speak nonsense because their minds are unclear. 4. ... 1. People need to sleep early and do some sports. 2. ... Summary use need correctly in the sentences. use negative prefixes un-, dis-, non-, im-, mis- and in- to express the opposite meanings of the original words. 2 1 After learning this lesson, I can Homework 1. Write down and improve your presentation. 2. Preview Oral Communication. $