Unit 4 Amazing Plants and Animals（下）-2026-2027学年八年级英语上册知识点精讲（人教版）

Unit 4 Amazing Plants and Animals 知识点精讲（下） action percent communication protect importance ⊙单元核心词汇 happiness disappoint role,play a role in climate except lively 。单元同步语法 形容词最高级的范围表达与语境运用 。单元文章对话 重点句型讲练 教材同步词汇全解全练 重点1 单元词汇 1.action/'aekn/n.行动；行为 词形变化：act(v.行动)；active(adj.积极的)；activity(n.活动) 搭配：take action采取行动 例佝：Ne must take action to protect the environment.我们必须采取行动保护环 境。 2.percent/pa'sent/n.百分之 词形变化：percentage(n.百分比) 搭配：.percent of.…的百分之. 例佝：Twenty percent of the students are from China..百分之二十的学生来自中 国。 3.communication/ke,mju:nI'kerfn/n.交流；沟通 词形变化：communicate(W.交流)；communicative(adj.爱说话的) 搭配：communication with sb.与某人交流 例句：Good communication is important in a team.良好的沟通在团队中很重要。 4.protect /pre'tekt/v.保护 词形变化：protection(n.保护)；protective(ad.保护的) 词根：pro-(向前)+tect(遮蔽) 搭配：protect.from.保护.免受. 例句：We should protect animals from danger..我们应该保护动物免受危险。 5.mportance/im'po:tns/n.重要性 词形变化：important(adj.重要的)；unimportant(adj.不重要的) 搭配：the importance of..的重要性 例句：Do you know the importance of saving water'?你知道节约用水的重要性吗？ 6.happiness/'haepines/.n.幸福；快乐 词形变化：happy(adj.快乐的)；unhappy(adj.不快乐的)；happily(adv.快乐地) 搭配：bring happiness to sb.给某人带来快乐 例句：Helping others brings me happiness.帮助别人给我带来快乐。 7.disappoint/,drse'poInt/v.使失望 词形变化：disappointed(adj.感到失望的)；disappointing(adj.令人失望的)； disappointment(n.失望 词根：dis-(否定)+appoint指定) 搭配：be disappointed with/at..对.感到失望 例句：Don't disappoint your parents.别让你的父母失望。 8.role /reul/n.作用；角色 搭配：play a role in..在.中发挥作用；扮演角色 例句：Trees play an important role in our life.树木在我们的生活中发挥着重要作 用。 9.climate/'klarmet/n.气候 词形变化：climatic(adj.气候的) 搭配：climate change气候变化 例佝：The climate in the south is warm.南方的气候很温暖。 10.except/ik'sept/prep.除…之外 词形变化：exception(n.例外)；exceptional(ad.例外的) 搭配：except for除.之外（整体中排除细节） 例句：Everyone is here except Tom.除了汤姆，大家都在。 11.vely/'larvli/adj.活泼的；充满活力的 词形变化：livelier(比较级)；liveliest(最高级)；live(.生活；adj.活的) 例句：The party was very lively.派对非常热闹。 考点通关 单元词汇 (一）单句填空（用所给词的适当形式填空） 1.We should take (act)to protect the forest 2.Fifty」 (percent)of the land is covered by water. 0 (communicate)with others is important 4.The government tries to (protection)wild animals. 5.The (important)of exercise is well known. 6.Money can't bring true (happy). 7.The movie (disappoint)me a lot. 8.Education (play)an important role in society 9.The (climate)in this area is dry 10.All the students passed the exam (except)John 11.The children are very (live)in the park. 12.I was (disappoint)with the result (二)短文填空 We live on Earth.The 1. (climate)is changing.We must 2. (action)to protect it.3. (communicate)about environmental problems is necessary.Everyone 4. (play)a role in saving the planet.For example, recycling 5 (percent)of waste can reduce pollution.The 6. (importance)of small actions is huge.Doing good things brings 7. (happy） to us.Don't 8 (disappoint)those who work hard.9. (except)for a few lazy people,most people care about the Earth.Let's make our world more 10. (Iive！ 参考答案 1.action;2.percent;3.Communication;4.protect;5.importance; (一)单句填空 6.happiness;7.disappointed;8.plays;9.climate;10.except;11.lively; 12.disappointed 1.climate;2.take action;3.Communication;4.plays;5.percent; (二)短文填空 6.importance;7.happiness;8.disappoint;9.Except;10.lively 教材同步语法全解全练 重点2 单元语法 形容词最高级的范围表达与语境运用 类别 说明 示例 定义 表示三者或三者以上的人或 He is the tallest boy in our 物中"最"的含义。 class. the+形容词最高级+名词 This is the most beautiful 基本结构 +表示范围的短语 city in China ①in+集体/场所（在.…之 1 the tallest in the class 2 the oldest of the three 中)②of+同类个体/数量 常见范围表达 ③the most popular (在..当中)③among+群 体（在之间）④从句或短 among students④the best movie I have ever 语（如I have ever seen) seen 以"e"结尾的形容词直接加" late→latest;clever→the 特殊情况 st";双音节词多使 most clever the cleverest; 用"most";不规侧变化需牢 good→best;bad→ 记。 worst:many→most 语境运用提示 ①常与"ofa‖"连用表示"在 She runs fastest of all.The 所有当中"②比较范围一般 Amazon is the longest 出现在句尾或句首③最高级 river in the world. 前通常加"the",但作表语且 不与同类比较时有时可省略 (中学不常考) 考点通关 单元语法 语法专练一：单项选择(8题) 1.Mount Qomolangma is mountain in the world. A.high B.higher C.the highest D.highest 2.Which is the sun,the moon or the earth? A.big B.bigger C.biggest D.the biggest 3.Tom is the tallest boy his class. A.in B.of C.among D.on 4.She is one of students in our school. A.popular B.more popular C.most popular D.the most popular 5.This is movie I have ever watched. A.good B.better C.the best D,best 6.Of all the subjects,I like English A.well B.better C.best D.the best 7.Who is the runner in your team? A.fast B.faster C.fastest D,the fastest 8. of the three girls,Lucy is the youngest. A.In B.Of C.Among D.For 语法专练二：语法填空(10题) 用所给词的适当形式填空，每空一词。 1.The Yellow River is the second river in China. 2.It is than any other river except the Yangtze River. 3.Of all the rivers in the world,the Nile is the 4.Li Ming is one of students in our class. 5.He studies than most of us. 6.In this exam,he got the score. 7.His favorite subject is math,and he thinks it is the subject of all. 8.Among the four seasons,I like summer because I can swim. 9.But my brother thinks winter is season for skating 10.He is the when it snows. 参考答案 语法专练一：单项选择 1.C;2.D;3.A;4.D;5.C;6.C;7.C;8.C 1.longest;2.longer;3.longest;4.the best;5.harder; 语法专练二：语法填空 6.highest;7.most interesting;8.best;9.the best;10. happiest 教材同步文章句型精讲 重点3 文章句型 1.The captain sighed.This was the thickest fog he had ever seen. 结构：This was the+形容词最高级+名词+(that)+主语+had ever+过去分 词 短语：the thickest fog最浓的雾 译：这是他赠见过的最浓的雾。 2.They were over 330 kilometres from the closest land. 结构：主语+be+距离+from+地点 短语：over330 kilometres超过330公里 译：他们距离最近的陆地超过330公里。 (3.Clearly,they needed help! 结构：副词开头+主语+谓语 译：显然，他们需要帮助！ 4.The captain wrote a message for help,and tied it to Big Blue's leg. 结构：并列谓语write.and tie. 短语：write a message写信息，tie.to.把.…系到..上 译：船长写了一条求助信息，把它系到Big Blue的腿上。 5.He ran to them quickly. 结构：主语+run to+地点+副词 译：他快速跑向它们。 6.Big Blue flew up and then returned almost right away. 结构：并列动词flew.and returned. 短语：right away立刻 译：Big Blue飞上去，然后几乎立刻返▣了。 7."You are our last hope,little guy,"said the captain. 结构：直接引语+said+主语 短语：last hope最后的希望 译："你是我们最后的希望，小家伙，"船长说道。 8.Arny flew around and around,higher and higher. 结构：形容词比较级+and+形容词比较级表示"越来越..” 短语：around and around一圈又一圈 译：Any一圈又一圈地飞，越来越高。 9.The captain threw him into the air. 结构：throw+宾语+into+地点 短语：into the air向空中 译：船长把他抛向空中。 10.Soon,the bird was away from the ship. 结构：主语+be+away from+地点 短语：away from远离 译：很快，那只鸟远离了船。 11."That's a good sign,"said the captain with more hope. 结构：with+名词表示伴随状态 短语：a good sign一个好迹象 译："那是个好迹象，"船长带着更多希望说道。 12.Almost 340 kilometres away,Billy heard fast-moving wings come into his building. 结构：hear+宾语+do sth.听到..做某事 短语：fast-moving快速移动的 译：在将近340公里外，Bily听到快速拍动的翅膀飞进他的大楼。 13.He went straight to the water bowl. 结构：go straight to+地点径直走向… 译：他径直走向水碗。 14."Well,aren't you the thirstiest bird!"Billy smiled. 结构：aren'tyou.感叹/反问，表示惊讶 短语：the thirstiest bird最渴的鸟 译："哇，你不是最渴的鸟吧！"B川y笑着说。 15.He took the note,running as fast as he could to the company office. 结构：主句+现在分词短语作伴随状语 短语：as fast as one could尽可能快地 译：他拿起纸条，尽可能快地跑向公司办公室。 16.He learnt Arny had flown in fog and over the sea,for more than four hours. 结构：learn+宾语从句（过去完成时had flown) 短语：in fog在雾中；over the sea在海上 译：他得知Any在雾中且在海面上飞行了四个多小时。 17.Thanks to Arny,people sent help to the ship. 结构：Thanks to+名词，主句 短语：send help to向.发送救援 译：多亏了Arny,人们向那艘船派去了救援。 18."Arny really is the most amazing bird!" 结构：the most+多音节形容词原级+名词最高级 译："Arny真是最了不起的鸟！" 练习一：单项选择（从A、B、C、D中选择最佳答案） 1.The captain had never seen such thick fog before A.a B.the C./ D.an 2.They were 330 kilometres from the closest land. A.over B.on C.at D in 3.The captain ran the pigeons quickly. A.on B.to C.for D,with 4.Big Blue flew up and then al most right away. A.return B.returned C.returning D.returns 5.Arny flew around and around, and A.high;high B.higher;higher C.highest;highest D.the higher;the higher 6.The captain Arny into the air. A.threw B.throw C.throws D.throwing 7.Billy heard fast-moving wings into his building. A.come B.came C.to come D.coming 8.He ran fast he could. A.as;as B.so;as C.such;as D.too;to 9.Arny had flown in fog and over the sea more than four hours. A.for B.since C.in D.during 10. to Arny,people sent help to the ship. A.Thank B.Thanks C.Thankful D.Thankfully 练习二：完成句子（根据中文提示，每空一词） 这是他曾见过的最浓的雾。 This was the fog he had seen. 他们距离最近的陆地超过330公里。 They were 330 kilometres the closest land. 船长写了一条求助信息。 The captain a message help. 他把纸条系在Big Blue的腿上。 He the note Big Blue's leg. "你是我们最后的希望，"船长说道。 "You are our said the captain. 船长的声音中带着更多的希望。 The captain said more 他径直走向水碗。 He went to the water 他尽可能快地跑向办公室。 He ran fast he could to the office. 多亏了Arny,人们派出了救援。 Arny,people sent help. Arny真是最了不起的鸟。 Arny really is the bird. 练习三：翻译句子（根据英文写出完整的中文句子，或根据中文写出英文句子） 这是曾见过的最浓的雾。 They were over 330 kilometres from the closest land. 船长写了一条求助信息。 Big Blue flew up and then returned almost right away. 你是我们最后的希望。 Arny flew around and around,higher and higher. 他听到快速拍动的翅膀飞进大楼。 He ran as fast as he could to the company office. 多亏了Any,人们派出了救援。 Arny真是最了不起的鸟。 参考答案 练习一：单项选择 1.C(fog不可数，不用冠词)；2.A3.B;4.B;5.B;6.A7.A (hear sb.do sth.强调听见全过程)；8.A9.A(for+时间 段)；10.B(Thanks to固定短语) 1.thickest;ever;2.over;from;3.wrote;for;4.tied;to;5.last 练习二：完成句子 hope;6.with;hope;7.straight;bowl;8.as;as;9.Thanks to; 10.most amazing 1.This was the thickest fog he had ever seen.;2.他们距离最 近的陆t地超过330公里.；3.The captain wrote a message for help.;4.Big Blue飞上去，然后几乎立刻返回了；5.You are our 练习三：翻译句子 last hope.;6.Arny一圈一圈地飞，越来越高.；7.He heard fast- moving wings come into the building.;8.他尽可能快地跑向公 司办公室.；g.Thanks to Arny,people sent help.;i0.Arny really is the most amazing bird. A 教材同步单元练习 一、阅读理解 A篇 Do animals have a sense of direction?Some animals can find their way home even over very long distances.Homing pigeons are famous for this.They have a special ability to know where they are and where to go.How do they do it?Scientists believe pigeons use the sun,the Earth's magnetic field ()and even their sense of smell to find their way In the story of Arny,the brave homing pigeon flew through thick fog and over the sea for more than four hours.He carried a message for help and saved a ship in danger. This shows that homing pigeons are not only smart but also very brave.People have used them for hundreds of years to send messages,especially during wars.Today,we have modern technology,but we still admire these amazing birds. But not all animals have such a strong sense of direction.For example,some pet cats get lost easily if they move to a new home.However,dogs are usually good at finding their way back.The reason may be that dogs have a better memory of smells and landmarks. ()1.What is the main idea of the first paragraph? A.Animals can find their way home easily. B.Homing pigeons have a special ability. C.Scientists have no idea how pigeons find their way. D.Pigeons only use the sun to find direction. ()2.According to the passage,which of the following is TRUE about Arny? A.He flew for more than five hours. B.He carried a message and saved a ship. C.He got lost in the thick fog. D.He was the only pigeon on the ship. ()3.The underlined word "admire"in Paragraph 2 probably means ". A.害怕 B.钦佩 C.研究 D.保护 ()4.What can we learn from the last paragraph? A.Cats have a stronger sense of direction than dogs. B.All pets can find their way home easily. C.Dogs may use smells and landmarks to find their way. D.Moving homes never affects cats. ()5.What is the best title for this passage? A.How to Train a Homing Pigeon B.The Story of Arny the Pigeon C.Animals'Sense of Direction D.Pigeons and Modern Technology B篇 Many plants have amazing ways to survive ()Some can "move"or "eat" insects!Have you ever heard of the Venus flytrap?It is a plant that catches flies ( and other small insects.Its leaves look like a mouth.When an insect touches the tiny hairs inside,the leaves close very quickly.Then the plant slowly digests (the insect. Why do plants like the Venus flytrap eat insects?Because they live in places where the soil is poor in nutrients().By eating insects,they get the nutrients they need to grow.There are about 600 kinds of such "carnivorous (plants"in the world. Another amazing plant is the "sensitive plant"().When you touch its leaves, they fold up()right away.This helps protect the plant from animals that might eat it.After a few minutes,the leaves open again. Plants may seem quiet,but they are full of surprises.Next time you see a plant,take a closer look-it might be doing something amazing! ()1.What does the Venus flytrap do when an insect touches its hairs? A.It opens its leaves wider. B.It closes its leaves quickly C.It moves away from the insect. D.It makes a loud sound. ()2.Why do carnivorous plants eat insects? A.Because they like eating meat. B.Because they get nutrients from insects. C.Because they want to be bigger. D.Because insects are easy to catch. ()3.What happens when you touch a sensitive plant's leaves? A.They fall off. B.They turn yellow. C.They fold up. D.They grow faster. ()4.The main purpose of this passage is to A.tell readers how to grow carnivorous plants B.introduce some amazing plants C.show the dangers of insect-eating plants D.explain why plants are quiet 二、完形填空 A little bird named Chirpy lived in a big tree.Every morning,he sang songs to welcome the sun.But one day,a strong wind 1.his home away.Chirpy was very sad.He flew around,looking for a new 2. He met a squirrel ()The squirrel said,"You can live in my tree hole."But the hole was too dark for Chirpy.He 3.the squirrel and flew on. Then he saw a rabbit.The rabbit said,"You can 4.in my burrow ().But the burrow was underground,and Chirpy didn't like the dark 5..He thanked the rabbit and flew away Just when he was about to give 6.,a friendly girl named Lily found him.She had a small birdhouse in her garden.She put it 7.a high branch."You can live here,she said.Chirpy flew into the birdhouse.It was warm and bright.He was so happy that he sang his 8.beautiful song. From that day on,Chirpy visited Lily every morning.He 9. her happiness.Lily was glad that she could help a little bird.Sometimes,the 10. kindness can make a big difference. A.blow B.blew C.blowing D.blows A.food B.friend C.home D.song A.thanked B.forgot C.left D.asked A.play B.eat C.sit D.stay A.either B.too C.also D.as well A.in B.out C.up D.away A.on B.in C.under D.at A.good B.better C.best D.well A.brought B.bought C.took D.carried A.smallest B.small C.smaller D.most small 三、阅读短文回答问题 When people think of amazing animals,they often think of dolphins or elephants.But one of the most amazing animals is the Arctic tern(北极燕鸥).This small bird makes the longest migration()of any animal on Earth.Every year,it flies from the Arctic to the Antarctic and back again.That's about 70,000 kilometers in total! The Arctic tern is small,only about 30-40 centimeters long.But it has very strong wings.It spends most of its life flying.In fact,it sees more daylight than any other animal because it follows the summer from the North Pole to the South Pole. Scientists are still studying how these birds find their way.They believe the birds use the sun,the stars,and the Earth's magnetic field.The journey is full of danger.They have to avoid storms and predators like large seabirds.But the Arctic tern keeps flying,year after year.Some can live for more than 30 years. The Arctic tern shows us that even a small creature can achieve great things.It reminds us of the importance of never giving up. 1.How far does the Arctic tern travel each year? 2.Why does the Arctic tern see more daylight than any other animal? 3.List two ways that scientists believe Arctic terns use to find their way. 4.What dangers do Arctic terns face during their journey? 5.What can we learn from the Arctic tern? 四、短文填空 用方框中所给单词的适当形式填空，使短文完整正确。（每个单词限用一次，每空限填一个单 词。) lively communicate important protect happy percent climate except role action As we all know,plants 1.an important role in our life.They produce oxygen( and clean the air.However,many people don't take 2. to protect them. About 30 3. of the world's plants are in danger because of 4. change and human activities.Good 5.between countries can help solve this problem We need to 6.forests and plant more trees.7.comes from a green environment.8.for everyone's effort )our planet will become more 9. So let's work together to make the world a better place.The 10. of plants cannot be ignored () I am happy to 11.you all.Let's study hard and have fun together! 1. 2. 3. 4. 5 6 7 8. 9. 10. 11. 五、写作 话题：An Amazing Animal 提示： 1.你最喜欢哪种动物？ 2.它有什么特别之处？ 3.你从它身上学到了什么？ 要求：80词左右，语句通顺，语法正确。 参考答案 一、 阅读理 A篇：1.B2.B3.B4.C5.C 解 B篇：1.B2.B3.C4.B 二、完形填 空 1.B;2.C;3.A;4.D;5.A;6.C;7.A;8.C;9.A;10.A 1.70,000 kilometers 2.the South Pole 三、阅读短 文回答问题 3.the sun,the stars 4.storms,predators 5.achieve great things/never give up 四、短文填 1.play 2.action 3.percent 4.climate 5.communication 6.protect 7. 空 Happiness 8.Except 9.lively 10.importance 11.know 五、写作 范文： My favourite amazing animal is the Arctic tern.It is small but very strong.Every year it flies from the Arctic to the Antarctic and back,about 70,000 kilometers!It never gives up even in bad weather.From this brave bird,I learn that size doesn't matter-if we keep trying,we can achieve great things.I really admire the Arctic tern.