Unit5 Amazing nature重要知识点讲解 2025-2026学年外研版七年级英语下册

2026-01-31
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外研英语七下Unit5 Amazing nature 重要知识点讲解 一、重点单词详解 1. cloud(n. 云) 词性特征:可数名词,复数形式为clouds 同源词:cloudy(adj. 多云的) 用法:常与介词in、above搭配,描述云的位置 例句: ① There are many white clouds in the blue sky.(蓝天上有许多白云。) ② The plane disappeared behind the clouds.(飞机消失在了云层后面。) ③ It will be cloudy tomorrow, so take an umbrella in case of rain.(明天多云,带上伞以防下雨。) 2. soft(adj. 柔软的) 词性特征:形容词,可作定语、表语,修饰名词 反义词:hard(adj. 坚硬的) 用法:常用来描述物体的触感,如布料、毛发、土壤等 例句: ① The soft grass feels comfortable under our feet.(脚下柔软的草地感觉很舒服。) ② She has a soft toy bear that she takes everywhere.(她有一只柔软的玩具熊,走到哪儿带到哪儿。) ③ The bed is so soft that I don't want to get up.(这张床太柔软了,我都不想起床。) 3. brightly(adv. 明亮地;光亮地) 词性特征:副词,修饰动词、形容词或整个句子 同源词:bright(adj. 明亮的;聪明的) 用法:常用来描述光线、颜色的明亮程度,或动作的轻快、活泼 例句: ① The sun is shining brightly in the sky.(太阳在天空中明亮地照耀着。) ② The stars are shining brightly at night.(夜晚,星星明亮地闪烁着。) ③ She smiled brightly when she saw her old friend.(看到老朋友时,她灿烂地笑了。) 4. sky(n. 天;天空) 词性特征:可数名词,复数形式为skies(泛指“天空”时常用单数) 核心搭配:in the sky(在天空中)、blue sky(蓝天) 用法:泛指天空时不加冠词,特指某一片天空或带有形容词修饰时加the 例句: ① The lovely blue of the sky always gives me a calm feeling.(天空美丽的蓝色总是能给我一种心平气和的感觉。) ② A bird is flying high in the sky.(一只鸟在天空中高飞。) ③ The sky turns red at sunrise and sunset.(日出和日落时,天空会变成红色。) 5. calm(adj. 镇静的;沉着的;心平气和的) 词性特征:形容词,可作定语、表语;也可作动词,意为“使镇静;使平静” 核心搭配:keep calm(保持镇静)、stay calm(保持平静) 用法:常用来描述人的情绪、态度,或环境的安静、平和 例句: ① The lovely blue of the sky always gives me a calm feeling.(天空美丽的蓝色总是能给我一种心平气和的感觉。) ② When the earthquake happens, you should try your best to keep calm.(当地震发生时,你应该尽力保持镇静。) ③ She took a deep breath to calm herself down.(她深吸一口气,让自己平静下来。) 6. above(prep. 在……上面;adv. 在上面) 用法:作介词时,后接名词/代词,指“在某物上方,不接触且不一定垂直”;作副词时,无宾语 易混提示:区别于on(在……上面,表面接触)、over(在……正上方,不接触) 反义词:below(prep./adv. 在……下面) 例句: ① There is a kite flying above the tree.(有一只风筝在树的上方飞。) ② The plane is flying above the clouds.(飞机在云层上面飞行。) ③ Please put the book on the shelf above.(请把书放在上面的架子上。) 7. proud(adj. 自豪的;骄傲的;得意的) 词性特征:形容词,常作表语,后接介词of或不定式 同源词:proudly(adv. 自豪地)、pride(n. 自豪;骄傲) 核心搭配:be proud to do sth.(对做某事感到自豪)、be proud of...(为……感到自豪) 例句: ① I'm proud to say that I'm from one of the most beautiful places in the world.(我很自豪地说我来自世界上最美丽的地方之一。) ② We are proud of our great country.(我们为伟大的祖国感到自豪。) ③ She felt proud when she won the singing competition.(赢得歌唱比赛时,她感到很自豪。) 8. lie(v. 躺;平卧;撒谎) 词性特征:不及物动词,含义不同,过去式、过去分词变化不同(不规则动词) 核心搭配:lie down(躺下)、lie to sb.(对某人撒谎) 易混提示:表“躺”时,过去式lay;表“撒谎”时,过去式lied 例句: ① I'm saltier than any sea, so people can lie on my surface.(我比任何海水含盐量都高,所以人们可以躺在我的水面上。) ② If you feel tired, you can lie down and take a rest.(如果你觉得疲惫,可以躺下休息一会儿。) ③ He lied to me again. I won't believe him any more.(他又对我撒谎了,我不会再相信他了。) 9. suggest(v. 暗示;暗指;建议;提议) 词性特征:及物动词,后接名词、动名词或宾语从句 名词形式:suggestion(n. 建议;提议) 核心搭配:suggest doing sth.(建议做某事) 例句: ① As my name suggests, I make rain for my plants and animals.(正如我的名字所暗示的那样,我为我的植物和动物制造雨水。) ② He suggested going to the zoo this weekend.(他提议这周末去动物园。) ③ She suggested that we should finish the work early.(她建议我们早点完成这项工作。) 10. disappear(v. 消失;不见) 词性特征:不及物动词,无被动语态 反义词:appear(v. 出现) 用法:常用来描述人、物或现象的突然消失 例句: ① I'm disappearing.(我正在消失。) ② The plane disappeared behind the black clouds.(飞机消失在了乌云后面。) ③ The snow disappeared quickly when the sun came out.(太阳出来后,雪很快就消失了。) 二、重点短语详解 1. be famous for(因……而闻名) 同义短语:be known/well-known for... 用法:后接名词/代词,强调“因某人/某物的特征、成就或物产而闻名” 易混提示:区别于be famous as(作为……而闻名)(后接身份、职业) 例句: ① It is famous for the world's highest mountain.(它因拥有世界上最高的山而闻名。) ② This city is famous for its beautiful beaches.(这座城市因它美丽的海滩而闻名。) ③ My hometown is famous as an ancient town.(我的家乡作为一个古镇而闻名。) 2. be proud to do sth.(对做某事感到自豪/骄傲) 同义表达:be proud of doing sth. 用法:proud为形容词,不定式to do sth. 作原因状语,说明“自豪的原因” 拓展:be proud of sb./sth.(为某人/某物感到自豪) 例句: ① I'm proud to say that I'm from one of the most beautiful places in the world.(我很自豪地说我来自世界上最美丽的地方之一。) ② She is proud to be a volunteer in the community.(她很自豪能成为社区的一名志愿者。) ③ We are proud of his great progress in English.(我们为他在英语上的巨大进步感到自豪。) 3. be likely to do sth.(可能做某事) 同义表达:might/could do sth.(可能做某事) 用法:likely为形容词,意为“可能的”,主语可以是人或物,侧重“有可能性” 拓展:It is likely that...(可能……) 例句: ① It is likely to rain this afternoon, so take an umbrella.(今天下午可能会下雨,带上伞吧。) ② He is likely to arrive late because of the heavy traffic.(因为交通拥堵,他可能会迟到。) ③ It is likely that we will have a test tomorrow.(我们明天可能会有一场考试。) 4. go down(下降;下沉;落下) 用法:不及物动词短语,可描述水位、价格、温度的“下降”,也可描述太阳、月亮的“落下” 反义词组:go up(上升;上涨) 例句: ① My water level is going down.(我的水平面正在下降。) ② The sun goes down in the west every evening.(太阳每天傍晚从西边落下。) ③ The price of vegetables has gone down recently.(最近蔬菜的价格下降了。) 5. year by year(一年又一年;逐年) 同义短语:year after year 用法:作时间状语,强调“随着时间推移,每年都有变化” 例句: ① The grassland becomes drier year by year.(这片草原一年比一年干燥。) ② He grows taller and stronger year by year.(他一年比一年长得高、长得壮。) ③ Great changes have taken place in my hometown year by year.(我的家乡逐年发生着巨大的变化。) 6. dry up(干涸;枯竭) 用法:不及物动词短语,常用来描述河流、湖泊、土壤等“干涸”,也可描述水源、灵感等“枯竭” 例句: ① Many rivers dry up in summer because of little rain.(因为雨水少,很多河流在夏天会干涸。) ② The lake has dried up completely due to the hot weather.(由于天气炎热,这个湖已经完全干涸了。) ③ If we don't save water, the water resources will dry up one day.(如果我们不节约用水,水资源总有一天会枯竭。) 7. such as(比如;例如) 同义表达:for example(例如) 用法:用来列举同类人或事物中的多个例子,后接名词/代词,不用逗号隔开 易混提示:for example 一般只列举一个例子,且用逗号与前面内容隔开 例句: ① I like different kinds of flowers such as roses and lilies.(我喜欢各种各样的花,比如玫瑰和百合。) ② There are many kinds of animals in the zoo such as tigers, pandas and elephants.(动物园里有很多种动物,比如老虎、熊猫和大象。) ③ She likes sports such as running and swimming.(她喜欢运动,比如跑步和游泳。) 8. cut down(砍伐;砍倒;削减) 用法:及物动词短语,后接名词/代词;宾语为代词时,需放在cut和down中间 含义:可表示“砍伐树木”,也可表示“削减开支、数量等” 例句: ① However, people are cutting down my trees for wood and to make space for farming.(然而,人们正在为了木材和给耕种腾出空间而砍伐我的树木。) ② We should not cut down trees randomly.(我们不应该随意砍伐树木。) ③ He decided to cut down his spending on clothes.(他决定削减在衣服上的开支。) 9. turn into(变成;成为) 同义短语:change into 用法:可表示人、物或状态的“转变”,后接名词/形容词作表语 例句: ① I'm turning into Waterworld!(我正在变成《未来水世界》!) ② Ice can turn into water when the temperature rises.(当温度升高时,冰可以变成水。) ③ The small village has turned into a beautiful town.(这个小村庄已经变成了一个美丽的小镇。) 10. in fact(其实;实际上) 同义短语:actually、as a matter of fact 用法:用于强调事实与表象不同,可置于句首、句中或句末,常用逗号隔开 例句: ① In fact, this area is full of amazing natural scenery.(其实,这个地区充满了令人惊叹的自然风光。) ② He looks very serious, but in fact he is very kind.(他看起来很严肃,但实际上他很善良。) ③ I thought she didn't like nature, but in fact she loves hiking very much.(我以为她不喜欢大自然,但其实她非常喜欢徒步旅行。) 三、重点句型详解 1. It is famous for the world's highest mountain.(它因拥有世界上最高的山而闻名。) 句型结构:主语 + be famous for + 名词/代词(出名的原因) 用法:it在此处指代某一地区、地方;the world's highest mountain 为名词短语,作介词for的宾语,最高级前需加the 拓展:主语为人时,也可用于此句型,表示“因某事/某物而闻名” 例句: ① This city is famous for its delicious food.(这座城市因它美味的食物而闻名。) ② He is famous for his paintings.(他因他的画作而闻名。) ③ My hometown is famous for its ancient temples.(我的家乡因它的古寺而闻名。) 2. The plateau is quieter than the big cities.(这片高原比大城市更安静。) 句型结构:主语 + 形容词比较级 + than + 比较对象 用法:本句为形容词比较级的基本用法,quieter是quiet的比较级,than连接比较对象;比较对象需前后一致(高原 vs 大城市) 拓展:副词比较级用法相同,如 He runs faster than me.(他比我跑得快。) 例句: ① The grassland is wider than the farmland.(这片草原比农田更宽阔。) ② This river is longer than that one.(这条河比那条河长。) ③ She sings more beautifully than her sister.(她比她姐姐唱得更动听。) 3. In my heart, it's better than any other place.(在我心里,它比其他任何地方都好。) 句型结构:主语 + 形容词比较级 + than any other + 单数名词(比较范围) 用法:此句型用于表示“在同一范围内,主语比其他任何一个都……”,相当于最高级;any other 后接单数名词,指“其他任何一个” 拓展:it's better than any other place = it's the best place(它是最好的地方) 例句: ① This park is more beautiful than any other park in the city.(这座公园比城市里其他任何一座公园都漂亮。) ② He is taller than any other student in our class.(他比我们班其他任何一个学生都高。) ③ This book is more interesting than any other book I have read.(这本书比我读过的其他任何一本书都有趣。) 4. I'm proud to say that I'm from one of the most beautiful places in the world.(我很自豪地说我来自世界上最美丽的地方之一。) 句型结构:主语 + be proud to do sth. + that 从句 用法:be proud to do sth. 表示“对做某事感到自豪”,that从句作say的宾语,说明“说的内容”;one of the most beautiful places 表示“最美丽的地方之一”,后接复数名词,形容词用最高级 例句: ① She is proud to say that she won the first prize.(她很自豪地说她赢得了一等奖。) ② We are proud to say that we are Chinese.(我们很自豪地说我们是中国人。) ③ He is proud to say that he can speak three languages.(他很自豪地说他会说三种语言。) 5. However, people are cutting down my trees for wood and to make space for farming.(然而,人们正在为了木材和给耕种腾出空间而砍伐我的树木。) 句型结构:转折连词(however) + 主句 + for sth. + and + to do sth. 用法:however 表示转折,意为“然而”,用逗号与主句隔开;for wood 表示“为了木材”,表目的;to make space for farming 是不定式短语,也作目的状语,强调“砍伐树木的另一个目的” 例句: ① However, we plant trees for environment and to make our city more beautiful.(然而,我们种树是为了环境,也是为了让我们的城市更美丽。) ② However, he studies hard for his dream and to make his parents proud.(然而,他努力学习是为了他的梦想,也是为了让他的父母感到自豪。) ③ However, we save water for ourselves and to protect our home.(然而,我们节约用水是为了我们自己,也是为了保护我们的家园。) 四、易错易混辨析 1. on、over 与 above 单词/短语 核心含义 关键区别 例句 on 在……上面 物体表面相互接触 Your mobile phone is on the shelf.(你的手机在架子上。) over 在……上面 垂直正上方,表面不接触 There is a bridge over the river.(河上有一座桥。) above 在……上面 不接触,不一定在正上方 The plane is flying above the clouds.(飞机在云层上面飞行。) 2. few、a few、little 与 a little 单词 修饰对象 含义与语气 例句 few 可数名词复数 几乎没有;否定语气 Few people know about this village.(几乎没人知道这个村庄。) a few 可数名词复数 几个;一些;肯定语气 Linda has only a few good friends.(琳达只有几个好朋友。) little 不可数名词 几乎没有;否定语气 There is little meat in the fridge.(冰箱里几乎没有肉了。) a little 不可数名词 少量;一些;肯定语气 There is a little juice in the bottle.(瓶子里有少量果汁。) 3. lie(躺)与 lie(撒谎) 单词 (lie) 含义 过去式/过去分词 常用搭配与例句 lie 躺;平卧 过去式:lay;过去分词:lain 搭配:lie down;例句:Lie down and have a rest.(躺下休息一会儿。) lie 撒谎 过去式:lied;过去分词:lied 搭配:lie to sb.;例句:He lied to his parents.(他对他的父母撒谎了。) 4. for example 与 such as 短语 核心含义 用法区别 例句 for example 比如;例如 只列举1个例子,用逗号与前文隔开,可放句首、句中、句末 I like animals, for example, tigers.(我喜欢动物,比如老虎。) such as 比如;例如 列举多个例子,不用逗号隔开,后接名词/代词 I like animals such as tigers and foxes.(我喜欢动物,比如老虎和狐狸。) 5. be famous for 与 be famous as 短语 核心含义 后接内容 例句 be famous for 因……而闻名 出名的原因(物产、特征、成就等) It is famous for the world's highest mountain.(它因拥有世界上最高的山而闻名。) be famous as 作为……而闻名 出名的身份、职业或称号 My hometown is famous as an ancient town.(我的家乡作为一个古镇而闻名。) 6. 形容词比较级与最高级(基础规则) 变化规则 例词 (原级→比较级→最高级) 说明 例句 词尾加 -er / -est tall→taller→tallest;fast→faster→fastest 单音节词、部分双音节词适用 He is taller than me.(他比我高。) 以不发音e结尾,加 -r / -st nice→nicer→nicest;large→larger→largest 避免重复加e This dress is nicer than that one.(这条裙子比那条漂亮。) 辅音字母+y结尾,变y为i加 -er / -est easy→easier→easiest;early→earlier→earliest y前是辅音字母才变化 This test is easier than the last one.(这次考试比上次简单。) ( 1 ) 学科网(北京)股份有限公司 $

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Unit5 Amazing nature重要知识点讲解 2025-2026学年外研版七年级英语下册
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Unit5 Amazing nature重要知识点讲解 2025-2026学年外研版七年级英语下册
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Unit5 Amazing nature重要知识点讲解 2025-2026学年外研版七年级英语下册
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