Unit 4 Amazing Plants and Animals. Section B重要知识点 -2025-2026学年人教版英语八年级上册

2025-07-06
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八上 Unit 4 Amazing Plants and Animals. Section B重要知识点 We Can't Live Without Bees 没有蜜蜂我们无法生存 - without [介词] 没有;缺乏 - 后接名词、人称代词宾格或动词-ing形式,表示伴随或假设。 - 反义词为with(具有;带有)。 - 例:Fish can't live without water.(没有水,鱼无法生存。) - 拓展:含without的句子可与“if...not...”结构同义转换。 例:I couldn't finish the work without your help. = If you didn't help me, I couldn't finish the work. Imagine you go to the supermarket... 想象你去超市…… - imagine [及物动词] 想象;猜想 - 后接名词、代词、动词-ing形式或从句。 - 例:Imagine (sb) doing sth(想象某人做某事);I can't imagine what our life will be like.(我无法想象我们的生活会怎样。) - honey [名词] - ① 蜂蜜(不可数):I like honey in tea.(我喜欢在茶里加蜂蜜。) - ② 亲爱的(爱称):Honey, help me with housework.(亲爱的,帮我做家务。) Disappointed? 失望? - disappointed [形容词] 失望的;沮丧的(说明人的感受,作表语) - 搭配:be disappointed with/in...(对……感到失望)。 - 例:She was disappointed in her band's new song.(她对乐队的新歌感到失望。) - 拓展 - disappointing [形容词] 令人失望的(说明事物特征)。 - disappoint [动词] 使失望:The result disappointed him.(结果让他失望。) At this moment you realize... 这时你意识到…… - connected [形容词] 连接的;相关的 - 搭配:be connected with/to...(与……相连/有关联)。 - 例:Food is connected with local culture.(食物与当地文化相关。) - 拓展 - connect [动词] 关联;连接:connect A with B(将A与B连接)。 - connection [名词] 连接;关系:a connection between pollution and trees(污染与树木的关系)。 This action helps plants grow. 这一行为帮助植物生长。 - action [名词] 行动;行为 - 搭配:take action (to do sth) 采取行动(做某事)。 - 例:We should take action to protect animals.(我们应采取行动保护动物。) In fact, without their work... 事实上,没有它们的工作…… - in fact 确切地说;实际上 - 例:In fact, she is talented in music.(事实上,她有音乐天赋。) - per cent (= percent) [名词] 百分之…… - 结构:基数词 + percent + of...(作主语时,谓语单复数由of后名词决定)。 - 例:70% of apples are red.(70%的苹果是红的。);20% of water is iced.(20%的水被冰覆盖。) For this reason, many scientists believe... 出于这个原因,许多科学家认为…… - for this reason 出于这个原因(句首,逗号隔开)。 - 例:For this reason, I missed the party.(出于这个原因,我没参加聚会。) For example, they work hard together... 例如,它们一起努力…… - work hard together 共同努力;齐心协力 - 拓展:pull together(一群人同心协力):If we pull together, we'll finish on time.(若齐心协力,我们能按时完成。) In order to store honey... 为了储存蜂蜜…… - in order to 为了;以便(后接动词原形,可放句首或句中) - 否定:in order not to do... - 例:In order to care for parents, he returned home.(为了照顾父母,他回家乡工作。) - 拓展:in order that + 从句(为了):He gets up early in order that he can be on time.(他早起以便按时上班。) - store [动词/名词] - ① 贮存(动词):store food for winter(储存过冬食物)。 - ② 商店(名词):buy pens at the store(在商店买笔)。 Another interesting thing... 关于蜜蜂的另一件趣事…… - communicate [动词] - ① 交流:communicate with sb(与某人交流)。 - ② 传达:communicate ideas(传达想法)。 Bees play an important part... 蜜蜂在生态系统中发挥重要作用。 - play a part (in sth) 参与;在……中发挥作用 - 同义:take part in(参与);play a role in(发挥作用)。 - 例:Education plays a part in it.(教育在其中起作用。) However, the number of bees is dropping... 然而,蜜蜂数量在下降…… - 辨析:the number of vs a number of - the number of(……的数量):主语时谓语单数。 例:The number of students is 50.(学生数量是50。) - a number of(许多):主语时谓语复数。 例:A number of students are playing.(许多学生在玩耍。) Bees need our help... 蜜蜂需要我们的帮助…… - a lot - ① 很多(名词短语):Sometimes there's a lot of snow.(有时雪很多。) - ② 很,非常(副词):It rains a lot.(雨下得很频繁。) - 拓展:a lot of/lots of(许多):后接可数/不可数名词。 Think about what you can do... 想想你能做什么…… - protect [动词] 保护;防护 - 搭配:protect...from/against...(保护……免受……)。 - 例:Wear sunglasses to protect eyes from sunlight.(戴墨镜保护眼睛免受阳光伤害。) - importance [不可数名词] 重要性 - 搭配:the importance of (doing) sth(做某事的重要性)。 - 例:Realize the importance of studying.(意识到学习的重要性。) What do you know about... 你对人类和其他昆虫的联系了解多少? - human [名词/形容词] - ① 人(可数,复数humans):Dogs hear better than humans.(狗的听觉比人好。) - ② 人的(形容词):human body(人体)。 - 辨析:such as vs for example - such as:列举同类事物(无逗号,直接加名词):cities such as Beijing(如北京这样的城市)。 - for example:举例(用逗号隔开,可放句首/中/末):Noise, for example, is pollution.(例如,噪音是一种污染。) They are home to many birds. 它们是许多鸟类的家园。 - be home to sb/sth 是……的栖息地;是……的家乡 - 例:The forest is home to wild animals.(森林是野生动物的栖息地。) happiness [不可数名词] 幸福;快乐 - 例:Share my happiness with you.(与你分享我的幸福。) - 拓展:形容词+ -ness构成名词(如good→goodness,sad→sadness)。 It weighs/weighed a ton. 它非常重。 - ton [可数名词] 吨 - 例:An elephant weighs several tons.(大象重几吨。) - 拓展:tons of(大量的):tons of presents(很多礼物)。 You may not realize it... 你可能没意识到…… - play a role (in) - ① 发挥作用:Schools play a role in education.(学校在教育中起作用。) - ② 扮演角色:Play an important role in a movie.(在电影中扮演重要角色。) The smallest frogs are about... 最小的青蛙大约…… - while [连词] - ① 而;然而(对比):I like coffee while my sister likes tea.(我喜欢咖啡,而姐姐喜欢茶。) - ② 当……时(引导时间状语从句,谓语用延续性动词):While we talked, the teacher came in.(我们说话时,老师进来了。) However, not everyone understands... 然而,并非每个人都明白…… - 部分否定:not + every/everyone/all/both表示“并非都”。 - 例:Not all students like English.(并非所有学生都喜欢英语。) - Both of them are not good at dancing.(并非他们两个都擅长跳舞。) Many people like watching blue whales... 许多人喜欢观赏蓝鲸…… - 辨析:watch sb do sth vs watch sb doing sth - watch sb do sth:看到动作全过程。 例:I watched him get into the room.(我看到他进了房间。) - watch sb doing sth:看到动作正在进行。 例:He watched them eating.(他看见他们在吃东西。) Blue whales live in all oceans... 蓝鲸生活在除北冰洋外的所有海洋。 - 辨析:except, except for, but, besides - except/but:同类中排除(不包括):We are all here except Tom.(除了汤姆,我们都在。) - except for:整体肯定,局部否定(修正):He is good except for his temper.(除了脾气,他很好。) - besides:除……外还有(包括):Besides milk, we need vegetables.(除了牛奶,还需要蔬菜。) This food lasts for over a year... 这些食物能维持一年多…… - last [动词/形容词/副词/名词] - ① 持续(动词):How long will the weather last?(坏天气会持续多久?) - ② 上一个的(形容词):last week(上周)。 - ③ 最后(副词):When did you last see him?(你上次什么时候见他?) - ④ 最后的人/事物(名词):He was the last to leave.(他最后离开。) How long they live 它们的寿命 - 辨析:how long, how often, how soon, how far - how long:时间多长/物体多长(答语:for + 时间段/长度)。 - how often:频率(答语:once a week等)。 - how soon:多久以后(答语:in + 时间段)。 - how far:距离多远(答语:5 kilometers等)。 - 真题链接(福建中考) - 问:How long have you been a member?(你加入多久了?) - 答:For two years.(两年。) 学科网(北京)股份有限公司 $$

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  Unit 4 Amazing Plants and Animals. Section B重要知识点 -2025-2026学年人教版英语八年级上册
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  Unit 4 Amazing Plants and Animals. Section B重要知识点 -2025-2026学年人教版英语八年级上册
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  Unit 4 Amazing Plants and Animals. Section B重要知识点 -2025-2026学年人教版英语八年级上册
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