广州专用八年级上英语语法unit8-should&had better
八年级上册英语第八单元知识点笔记
八年级上册英语第八单元知识点笔记
八年级上册英语第八单元知识点包括以下内容：
1.动词的时态：一般现在时、一般过去时、现在进行时、过去进
行时、一般将来时、现在完成时等。
2.名词的数：可数名词单数和复数形式的变化规则，特殊名词复
数形式。
3.动词的分词形式：现在分词和过去分词的形成规则。
4.形容词和副词的比较级和最高级形式：变化规则和比较结构（as...as, not as...as,比较级加than,最高级加in）。
5.形容词性物主代词：形容词性物主代词的变化规则和使用方法。
6.情态动词：can, could, may, might, must, should等情态动
词的用法和表示不同情态的含义。
7.疑问句和特殊疑问句：疑问词（who, what, where, when, why, how等）的使用和调整句序。
8.被动语态：被动语态的构成和使用。
9.现在进行时和一般现在时的区别：现在进行时表示现阶段正在进行的动作，一般现在时表示经常发生或客观事实。
10.时态的转换：根据语境变化时态，如将直接引语变为间接引语时态的转换。
以上是八年级上册英语第八单元的主要知识点，准确理解和掌握这些知识点，能够有效提高英语学习能力。
广州版英语八年级第一学期课堂笔记U8Grammar
U8 Grammar
1.情态动词should 的句型：(should 没有时态人称的变化，后加V-原形)
肯定句：sb. should do sth.
否定句：sb. shouldn ’t/should not do sth.
一般疑问句：Should sb. do sth?(即把should 提到句首)
回答：肯定：Yes,sb should.
否定：No, sb shouldn ’t/should not.
2.should 与ought to 的区别：
(1)should 强调主观看法，有委婉劝告之意，意为“应该，应当”;
(2)ought to 语气比should 强烈，表示“有义务、有责任”做某事，一般谈到法律、义务或规定时使用，带有责备、督促之意。
E.g. You should take more exercise.(建议)
She is your mother. You ought to take care of her when she is old.(义务)
3. sb. had better do sth.某人最好做某事 sb. had better not do sth. 某人最好不要做某事
E.g. 你最好准时到达学校。
____________________________________。
八年级英语上unit8 语法 权信教育
Unit8 情态动词（should, ought to，had better）一、重难点1.重点：(1)情态动词无人称和数的变化(2)情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 "not"(3)个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气2.难点：Ought to 和should 后接动词的完成式，即should\ought to have done, 表示“本应该完成某事但却没有完成，”表示遗憾或责备对方并没有完成。
二、精讲点拨一、should与ought to1.基本用法(1) 一般说来，两者可替换，只是ought to语气稍重。
如：You ought to [should] go and see Mary. 你应该去看看玛丽。
(2) ought to更多反映客观情况，表示因责任和义务或按道理应该做的事情。
should则侧重表示主观看法，某件事情适宜于这样做，属于一种良好的建议、劝说。
如：We ought to go and see Mary tomorrow, but I don’t think we will. 明天我们按理应该去看看玛丽，但是我认为我们不会去(此句不宜用should)。
再对比下列句子，感受区别：We should drink about eight cups of water a day. 我们应该一天喝八杯水。
We ought to keep our home clean and tidy. 我们应保持家里干净整洁。
You are his father. You ought to take care of him. 你是他的父亲，应该管他。
We should not use too many big words in our everyday speech. 在日常会话中我们不宜夸夸其谈。
(3) 在公告、须知或条例中，出于礼貌，常用should. 如：You should not run alongside the swimming-pool. 不准在游泳池边奔跑。
八年级上册英语语法《情态动词should》知识点整理
情态动词should“应该”
一、should的用法
1、should作为情态动词用，常常表示意外、惊奇、不能理解等，有“竟会”的意思，例如：
How should I know? 我怎么知道？
Why should you be so late today? 你今天为什么来得这么晚？
2、should有时表示应当做或发生的事，例如：
We should help each other.我们应当互相帮助。
二、我们在使用时要注意以下几点：
1. 用于表示“应该”或“不应该”的概念。
常指长辈教导或责备晚辈。
例如：
You should be here with clean hands. 你应该把手洗干净了再来。
2.用于提出意见劝导别人。
例如：
You should go to the doctor if you feel ill. 如果感觉不舒服，你最好去看医生。
3. 用于表示可能性。
should的这一用法是考试中常常出现的考点之一。
例如：
We should arrive by supper time. 我们在晚饭前就能到了。
She should be here any moment. 她随时都可能来。
本文由索罗学院整理。
八年级上册英语Unit8复习知识点归纳
八年级上册英语Unit8复习知识点归纳
八年级上册英语Unit8复习知识点归纳
知识点对朋友们的.学习非常重要，大家一定要认真掌握，为大家整理了15-16学期初二上册英语复习知识点归纳：Unit8，让我们一起学习，一起进步吧!
初二上册英语复习知识点归纳：Unit8
祈使句
1、用法：表达命令、请求、鼓励的句子。
2、句子结构：祈使句分为肯定祈使句和否定祈使句两种情况。
肯定祈使句构成：动词原形+其他。
1)Standup!起立!
2)Sitdown!坐下!
3)Openthedoor,please.请把门打开。
4)Cleantheclassroom,please.请把教室打扫一下。
5)Comeon!加油!
否定祈使句构成：Don’t+动词原形+其他。
1)Don’ttalkinclass!课堂上不许说话!
2)Don’tbelateforclass!不许迟到!
3)Don’tstayuplate!不要熬夜!。
广州八年级英语上U8
8A Unit 8 English WeekGrammar 语法讲解（一）情态动词should情态动词should 意为“应该”，可用来谈论义务和职责、提出建议或征求意见等。
梳理、讲解与练习【观察】1.You should go to bed now. 你应该现在去睡觉。
2.You should not / shouldn’t copy her homework. 你不应该抄她的作业。
3.– Should I help her to solve the problem? 我应该帮助她解决这个问题吗？–Yes, you should. / No, you shouldn’t. 是，你应该。
/ 不，你不应该。
4.You should apologize to her. 你应该向她道歉。
5.You ought to apologize to her. 你应该向她道歉。
6.– Tomorrow is Monday. 明天是周一。
– No. That should be Tuesday. 不，应该是周二。
【结论】should 在肯定句中可用来讨论义务和职责或提出建议，意为“应该”，如例句1; should 后面跟不带to 的动词不定式。
否定式为should not, 其缩略形式是shouldn’t , 意为“不应该”，如例句2;should 用于疑问句，表示征求意见或请求指示，如例句3;should 和ought to 都可以用来谈论义务和职责或提出建议。
两者可以互相使用，不过should 比较常用，如例句4和例句5;should 还有一种用法，表示更正别人的说法，如例句6。
提示：must, should 和ought to 的区别：1.must 的意思与should 和ought to 类似，但语气更强或更肯定，表示“必须”之意，常含有命令的性质; should 和ought to 语气则更缓和。
例如：You must stop playing computer games. 你必须停止玩电脑游戏。
八年级英语上unit8知识点
八年级英语上unit8知识点Unit 8 in 8th Grade English: Crucial Knowledge PointsAs one of the most critical units of the 8th grade English curriculum, Unit 8 requires students to develop their language skills and further their knowledge on various topics. Here are the essential knowledge points for Unit 8:1. Vocabulary words related to daily activitiesIn Unit 8, students learn vocabulary words related to daily activities, such as "wake up," "get dressed," "eat breakfast," "go to school," "have lunch," "do homework," and "go to bed." These words help students to express their daily routines in English and improve their speaking and writing abilities. It's important to practice these words through repetition and memorization.2. Adverbs of frequencyIn addition to daily activities, students also learn adverbs of frequency, such as "always," "usually," "often," "sometimes," "rarely," and "never." These adverbs help students describe how often they docertain activities and add more detail to their conversations and writing. Students should practice using adverbs of frequency in sentences and conversations.3. Simple present tenseThe simple present tense is an important grammar point in Unit 8. It’s used to talk about actions that happen regularly, as well as gene ral truths and facts. Students should know how to form the present tense of regular verbs, as well as important irregular verbs like "be," "have," and "do." They should also be able to use the negative and interrogative forms of the present tense.4. Prepositions of time and placePrepositions of time and place are vital in Unit 8, as they help students describe when and where activities take place. Important prepositions of time include "at," "in," and "on," while prepositions of place include "at," "in," and "on," as well as "under," "above," "behind," and "beside." It’s important to practice using prepositions in context to improve your understanding.5. Modal verbsModal verbs, such as "can," "may," "should," "must," "might," and "would," are also introduced in Unit 8. These verbs express ability, permission, obligation, possibility, and preferences. Students should understand how to form and use modal verbs in sentences and conversations.Overall, Unit 8 in 8th Grade English is full of crucial knowledge points that build upon the language skills and knowledge learned in earlier units. By practicing vocabulary, grammar, and syntax, students will improve their speaking and writing abilities and be better equipped to communicate in English.。
八年级上unit8英语知识点
八年级上unit8英语知识点Unit8是八年级英语的重要章节，本章节主要介绍了以下知识点：一、词汇1. 社交场合常用语：如：May I introduce myself? (我能自我介绍一下吗？)（对方回答）Please do. (请自便。
)2. 表示希望、请求的句型：如：I hope you can come. (我希望你能来。
)（表示同意）Sure. I’d love to. (当然。
我很乐意。
)（表示不同意）I’m sorry, but I can’t. (对不起，我不能。
)3. 表示喜欢或不喜欢的句型：如：Do you like it? (你喜欢它吗？)（表示喜欢）Yes, I do. (是的，我喜欢。
)（表示不喜欢）No, I don’t. (不，我不喜欢。
)4. 描述物品的形状、大小和颜色：如：It’s round. (它是圆的。
)It’s big. (它很大。
)It’s yellow. (它是黄色的。
)5. 描述服装的颜色、款式和材料：如：It’s a red dress. (这是一件红色的连衣裙。
) It’s a long skirt. (这是一条长裙。
)It’s made of cotton. (它由棉花制成。
)6. 描述人物的外貌和性格：如：She has long curly hair. (她有着长卷发。
) He is outgoing. (他很外向。
)7. 描述自己的词汇：如：I am good at math. (我擅长数学。
)I am interested in music. (我对音乐有兴趣。
)二、语法1. 过去进行时：过去进行时表示在过去某个时间正在进行的动作，结构为was/were + 动词-ing。
如：I was watching TV at 8 o’clock yesterday evening. (昨天晚上8点我正在看电视。
)2. 从句：从句是句子中的一个成分，用来修饰主句或者作为主句的一个成分。
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should ，ought to 和had better一、掌握基本用法had better ，should ，ought to 含义及语气有所不同，请看下表：情态动词 含义 语气 备注had better 最好 最弱 should 与ought to 常可通用 should 应该 较强 ought to应该最强二、should 和ought to 二者的区别例如：We ought to be more careful with our homework.我们应当更加认真地做作业。
You should follow Mr. Wang’s advice. 你应当听王老师的话。
she should be back tomorrow.她应该明天回来。
I ought to do my homework now.我应该现在就做作业。
What’s wrong with my answer? It s hould be 62,not 26.我的答案出了什么错误？它应该是62，不是26。
ShouldOught to 肯定句 sb. should do sth. sb. ought to do sth. 否定句 sb. should not do sth. sb. ought not to do sth. 一般疑问句 Should sb. do sth.? Ought sb. to do sth.? 简略回答Yes, sb. should do sth. No, sb. should not / shouldn ’t do sth. Yes, sb. ought to do sth. No, sb. ought not /oughtn ’t to do sth. 反义疑问句You should study hard, shouldn't you? He shouldn’t speak in class, should he?You ought to study hard, oughtn't you? He oughtn't to speak in class, ought he?should 和 ought to 在用法上要注意以下3点：1.没有人称和数的变化。
2.后面接动词原形。
3.可用来构成否定句、疑问句及简明答语。
ShouldOught to意思表示主观看法，有“劝告、建议”的意思，即“按我的想法该如何”强调主观看法，语气比较委婉.一些建议，劝说时，译作“应当”比should 语气强, 更多反映客观情况，“有义务”或“必要”做某事，有时带有责备或督促的意味, 译为“应当，应该” .否定 表示某动作不一定要做表示做某事一定是错误的虚拟语态√×Should具体用法: ought to具体用法:1.表义务，意为”应该”You should do what your parents tell you. He shouldn’t stay up so late. 1. (表示义务、责任等) 应当, 应该You ought to work harder than that.2.表温和的建议或指正This name is wrong; it should be spelled Symthe, not Smith. 2. (表示劝告、建议等) 应该You don't look well. You ought to go to see the do ctor.3.表期待，意为”可能”She should be here in a minute. 3. (表示猜测、期望) 总应该，理应It ought to be a fine day tomorrow morning.4.可用于完成时,完成时表示过去应该做而未做的事情At the age of thirty-five I should have understood.5.用于第一人称疑问句询问对方意愿, 但与其较委婉温和Should I open the window? 4. “ought to + have + 过去分词”表示过去应做某事而实际未做You ought to have told me that (but you didn't). 这时ought to和should可以互换使用。
6.表惊讶等感情I’m surprised that he should say so.How should I know?7.表委婉语气, 常与say, think 等动词连用I should say he is over thirty.I should think it is a good film.三、should和ought to +have done（一）should/ought to + have done 意为本来应做但实际没有做，表达遗憾的感情色彩。
例如：There was a lot of fun at yesterday's party. You ought to have come, but why didn't you?（二）shouldn’t / oughtn't to have done，意为本来不应做但实际已做，表达遗憾的感情色彩。
例如：I was really anxious about you. You s houldn't have left home without a word.四、should和ought to +be doing ，表示“应该在（立即）……”例如：You oughtn’t to be talking so much.你不应当说这么多话。
They felt they ought to be doing something.他们感到他们应该做点什么事。
五、had better表示"最好"had better 作为情态动词，它只有一种形式，它后面要跟动词原形。
陈述句肯定形式：had better dosthYou had better go there at once. 你最好立即去那里。
否定形式：had better not do sth You had better not start at this time. 此时你最好别出发。
一般疑问句：Had he better start early at once? 他最好立即出发吗？Yes ,he had./ No, he ha dn’t.反义疑问句：You had better not go home, had you? 你最好别回家，是吗？She had better water the flowers as soon as possible，hadn’t she？她最好尽快给花浇水，不是吗？had better可用于的时态1.had better用于指现在。
如：Now you had better listen to the radio.你现在最好听收音机。
You had better be quiet.你最好安静一些。
2.had better用于指将来。
如：You had better start tomorrow.你最好明天动身。
We had better buy the more expensive one. It will last much longer and so it will be cheaper in the end.我们最好还是买贵些的,它更经久耐用，所以到头来，它还是更便宜些。
3.had better用于进行式，表示讲话人提出建议时，动作正在进行。
如：We had better be watching the TV play.我们最好现在就看到电视剧。
We had better be starting back now.我们最好现在就动身回去。
4.had better + have + V-ed可表示"本该做而没有做的事"。
如：You had better have done it .如果你把那件事办妥就好了。
(但实际上你没有那样做)You had better have stayed with us .要是当时你和我们呆在一起多好啊。
(实际上没有)注意点：一、had better后面必须跟动词原形；二、主语不论是第几人称，句子不论是什么时态，都要用had better的形式；三、在祈使句中，had有时可以省略；Better not do it .最好别做那事。
Better not wait for them.最好不要等他们。
四、had better的被动式；You had better do it.->It had better be done.You had better have done it.->It had better have been done.五、had better在表示对别人劝告、建议时，不宜用于与陌生人、长辈及上级的交谈中。
对长辈说话时，最好不用had better。
比较有礼貌的说法是：It might be better for you...；It would be better for you...。
It might be better for you to help me，Grandpa.爷爷，您最好能帮我一下。
情态动词专项练习题一、用should, shouldn’t, ought, oughtn’t填空：1. I’m getting fat. I to eat too much.2. Mary is not feeling well. She stay at home.3. He to be here, oughtn’t he?4. Children play football in the street.5. They to let their dogs run on the road.6. She’s always short of money. She spend too much.7. Mike has a weak body, so he to do more exercise.8. Hopeful gets low marks at school. He work harder.9. May go swimming this afternoon?No, she . She do her homework at home.10. we to buy some batteries?Yes, we . There’re no batteries left.11. You should drink eight cups of water, you?12. He oughtn't to speak in class, he?13. — Excuse me，may I sit here？—I’m afraid you ________ ________ not，because someone has taken it.14. Tom，you __________ have left home without telling your parents yesterday afternoon.15. You _________ __________ have bought that book. It is so good.16. I think you should be careful in all your work，____________ you？17. Your sister ought to put her heart and soul into her study，_____________ she？二、单项选择( )1.You jump th e queue! Sorry , I won’t.A. ought to notB. ought not toC. ought notD. not ought( )2. My sister often spends more money than she has.She spend so much. She save money.A. shouldn’t , ought toB. shouldn’t , oughtn’t toC. oughtn’t ,shouldD. oughtn’t to ,shouldn’t ( )3. There much noise in a hospital.A. should haveB. shouldn’t haveC. ought to beD. oughtn’t to be( )4. What we do in the corridor? You be quiet.A. should ,oughtB. ought ,oughtC. should, shouldD. should to ,ought to( )5.I to recite this text, I ?A. should ,shouldn’tB. ought ,oughtn’tC. shouldn’t ,oughtD. ought , shouldn’t( )7. Multiplied by 9 is 54. No, it to 63.A. ought, isB. should beC. must, beD. ought , be( )8. Albert is too fat. She not eat too much sweet.A. had betterB. ought toC. had toD. should to( )9. Kathy is talking to her classmate in the class.She to others in the class.A. should is talkingB. should be talkingC. shouldn’t be talkingD. shouldn’t is talking ( )10. they better wait here, sir? No, they .A. do ,don’tB. had ,hadn’tC. had ,don’tD. had ,had( )11.Susan better not be lazy, she?A. had ,hadB. hadn’t, hadC. hadn’t, hadn’tD. had, hadn’t( )12. This dictionary belongs to Rita. You ____________ it home without letting her know.A. had better not to takeB. shouldn’t have takenC. oughtn’t takeD. shouldn’t be taking ( )13. Our money is very limited，so you ___________ so much money on so dear a skirt.A. shouldn’t have spentB. shouldn’t be spendingC. needn’t have spentD. oughtn’t spend( )14. You __________ to your father like this，after all he is your father.A. needn’t have spokenB. mustn’t ha ve spokenC. oughtn’t to have spokenD. ought to not have spoken( )15. Look，the books on the desk are all wet. You _______ all the windows to keep the rain out.A. must have shutB. should have shutC. ought have shutD. can have shut( )16. The little girl had better not stay up too late，___________ she？A. doesB. willC. hadD. has( )17. This is a very important project，so you _______ plan it very carefully.A. ought toB. willC. dareD. need( )18. You had better ________ football near the street，it’s very dangerous.A. not to playB. don’t playC. not playD. to not play三、句式转换：1、You should go to school on time.(否定句)2、They ought to go now.(一般疑问句)3、You had better get here early.(否定句)4、You should dress neatly.(同义句)You dress neatly.5、We should put the rubbish in the bin.(划线提问)四、改错：1、Angel should to wear more clothes, it is cold.2、This book don’t ought to be too expensive.3、You’d better doing your homework at home.4、Ought he go now?5、The twins should listening to their mother.五、短文填空：Electricity is very important to our lives. Almost everyone today uses electricity in one way or another. As you know it is precious, so we 1 try our best to save electricity. For example, we 2 to turn on more lights than we need. You 3 not turn fans on when you leave a room. We 4leave the fridge open after we have taken something out. We 5 to turn off the lights after we leave school.。