【讲义】Unit 4 Amazing Plants and Animals Section B (单词+短语+句子+知识点+写作)

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【讲义】Unit 4 Amazing Plants and Animals Section B (单词+短语+句子+知识点+写作)

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Section B
ecosystem (n.生态系统) 搭配:protect the ecosystem(保护生态系统)
planet (n.行星) 搭配:planet Earth(地球)
weigh (v. 称重)→weight (n.重量)/weightless (adj. 失重的)
搭配:weigh up to 200 tons(重达200吨);lose weight(减重)
disappointed(adj.失望的,修饰人)→disappointing(adj.令人失望的,修饰事)
communicate (v.交流)→ communication (n.交流)
搭配:communicate with sb. 与某人交流
importance (n.重要性)→important (adj.重要的)
搭配:the importance of sth.…的重要性
protect (v. 保护)→ protection (n. 保护)
搭配:protect sb./sth. from…保护…免受…;protect wildlife保护野生动物
8. connection (n. 联系)→ connect (v. 连接) /connected (adj. 相关的)
搭配:have a connection with 与… 有关联;close connection 密切联系
be connected with:与…相连;与…有关联
live without:没有…而生存
in fact:事实上
for this reason:出于这个原因
for example=such as:例如
work hard:努力工作
work together:合作
in order to:为了
communicate with:与……交流
play a part in:参与某事;在…中起作用
.the number of…:…的数量
think about:考虑
because of:因为
live up to:活到;达到
take a walk:散步
be home to:是…的栖息地 例句:Large trees are home to many birds.
一、句子翻译
1.我们彼此依存才能生存,而蜜蜂就是这种关联的最佳例证之一。
We need each other to live, and bees are one of the best examples of this connection.
事实上,没有它们的劳作,世界上约 80% 的植物都无法生长。
In fact, without their work, about 80 per cent of the plants in the world cannot grow.
3.正因如此,许多科学家认为蜜蜂是这个星球上最重要的动物。
For this reason, many scientists believe that bees are the most important animals on this planet.
4.当一只蜜蜂找到新食物时,它会通过舞蹈告知同伴食物的位置和距离。
When a bee finds new food, it uses a dance to tell the others where and how far away the food is.
5.蜜蜂在我们星球的生态系统中起着重要作用。
Bees play an important part in the ecosystem of our planet.
6.然而,蜜蜂的数量正在减少,科学家们对此深感担忧。
However, the number of bees is dropping, and scientists are worried.
7.正因如此,它们成为了气候变化和生态系统研究中备受关注的对象。
Because of this, they are popular subjects in studies on climate change and the ecosystem.
8.蓝鲸是地球上最大、最重的动物。
The blue whale is the largest and heaviest animal on earth.
9.它的体重可达200吨。 It can weigh as much as 200 tons.
10.蓝鲸的寿命可达 90 岁。Blue whales can live up to 90 years.
11.当蓝鲸死亡时,它的尸体为海洋生物提供食物长达一年。
When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea.
二、句型提取
1. Without…,cannot…:没有…,…无法…
例句:Without plants, animals would have no food.
2.A is home to B:A 是 B 的栖息地
例句:The forest is home to rare birds.
3. play a role in doing sth 在做某事中起作用
例句:Scientists play a role in protecting ecosystems
4.Imagine you are…(想象你是…)
例句:Imagine you are a tour guide at the Bamboo Sea.(P33)Imagine you are a blue whale.(P39)
believe + 宾语从句,表示“相信…”
知识点1:without 引导的条件状语
用法:表示 “如果没有…”,主句用否定含义。
例句:Without water, plants would die.
知识点2:the number of 与 a number of
短语 含义 谓语动词 例句
the number of… …的数量 单数 The number of bees is 10,000.
a number of… 许多… 复数 A number of plants need pollination.
知识点3:such as和for example
such as与前面的句子之间用逗号隔开,后面列举两个以上的同类人或事物
for example一般只列举同类人或事物的一个,在句中作插入语。用逗号隔开,可置于句首/句中/句末。
I like sports, such as tennis and basketball.我喜欢运动,例如网球和篮球。
Ball games, for example, is very popular with young people.例如,球赛非常受年轻人欢迎。
知识点4:区别because 和 because of
①because+完整句子,可置于主句前或后,逗号可有可无(置于句首时通常加逗号)
I stayed at home because it rained.我待在家,因为下雨了。
Because he was ill, he couldn’t come to school.
②because of+名词/代词/:动名词(短语)
I stayed at home because of the rain.我待在家,因为雨。
She failed the exam because of her carelessness.她考试不及格,因为粗心。
He lost his job because of making mistakes.他因犯错丢了工作。
He succeeded because of you.他成功是因为你。
注意:对 “Why ” 的回答需用完整句子:
A: Why are you late
B: Because I missed the bus.( )
B: Because of the bus.( ,需用 because of 时需补充名词结构)
知识点5:another、other、others、the other的用法
课本原句:Can you give another title for the text
课本原句:What other interesting facts do you know about bees
1.another:表示 三者或三者以上中的另一个(单数),强调 “泛指”,无范围限制。
①+ 单数可数名词
I need another pen.我需要另一支笔。
②单独使用(代指单数名词)
This coat is too small. Can I try another 这件外套太小了,我能试另一件吗?
③+ 基数词 + 复数名词(表示“另外的……”)
We need another three chairs.我们还需要三把椅子。
2.other:表示 “其他的”,可修饰单数或复数名词,需与限定词(如 the, my, some 等)搭配使用,否则为形容词性物主代词。
①+ 复数名词(泛指其他的人或物)
Do you have any other questions 你有其他问题吗?
②+ 单数名词(特指两者中的另一个,需加 the。)
Where is the other shoe 另一只鞋在哪里?
I have two cats. One is black, the other is white.我有两只猫,一只黑色,另一只白色。
3.others:是 other 的复数代词形式,表示“其他的人或物”,相当于other +复数名词,泛指无范围的剩余部分。
①单独使用(= other + 复数名词),常与some搭配
Some people like coffee, others prefer tea.有些人喜欢咖啡,其他人喜欢茶。
②the others = the other + 复数名词,特指两部分中的另一部分
例:There are 50 students in our class. Twenty are girls, the others are boys.
(全班共 50 人,明确范围,“the others” 指剩下的 30 名男生。)
知识点5:too、also、either的用法
课本原句:Actually we eat bamboo shoots too.
课本原句:Bees are also one of the most interesting animals in the world.
1.too:用于肯定句或疑问句 中,表示 “也”,口语中更常见。
①句末(用逗号隔开或省略逗号)
I like coffee, and she likes it too.我喜欢咖啡,她也喜欢。
Are you a student too 你也是学生吗?
2.also:用于 肯定句中,表示 “也”,较正式,强调与前文的一致性。
①句中(实义动词前,be 动词 / 助动词 / 情态动词后)
He also plays the piano.他也会弹钢琴。
She is also a teacher.她也是一名老师。
They will also attend the meeting.他们也会参加会议。
②句首(用逗号隔开,强调 “此外”)
Also, we need to buy some snacks.(此外,我们需要买些零食。)
3.either:用于否定句中,表示 “也不”,相当于 “too” 的否定形式。
①句末(用逗号隔开或省略逗号)
I don’t like tea, and she doesn’t like it either.(我不喜欢茶,她也不喜欢。)
知识点6:辨析except、besides、but(都表示除了)
课本原句:Blue whales live in all oceans except the Arctic Ocean.
except(介词/连词)
①表示 “除…之外(不包含)”,指从整体中排除部分。
Everyone passed the exam except Tom.(汤姆没通过)
I work every day except Sunday.(周日不工作)
②区别于expect(动词):“期望,预计”,expect to do sth.期待做某事。
besides(介词/副词)
①“除…之外(还包含)”,指在整体基础上增加。
Besides math, I like physics.(数学和物理都喜欢)
②副词:“此外,而且”(用于补充说明)
She is smart. Besides, she is hardworking.
③区别于beside(介词):“在…旁边”,表示位置。
Sit beside me.(坐在我旁边)
3.but(介词/连词)
①介词:“除…之外”(常用于 nobody, nothing, all 等词后)
Nobody but him can solve this problem.(只有他能解决)
②连词:“但是”(表转折)
He is poor but happy.
【话题分析】
围绕“神奇的动植物”展开,可选取课文中提及的蓝鲸、竹子、蜜蜂等案例,结合“动植物的独特特征”“与人类的联系”“重要性”等角度,突出“动植物的奇妙之处及保护意义”。
【思路点播】
①时态
以一般现在时为主(描述动植物的特征、习性等客观事实)。
可穿插现在完成时(如“科学家已经发现……”)或情态动词(should, must等,表达保护建议)。
②结构
引入:点明主题(如“自然界有许多神奇的动植物”)。
中间:分点介绍动植物的特征、作用及与人类的联系(可结合课文案例)。
结尾:呼吁保护动植物或总结其重要性。
③细节
运用最高级(如the largest, the fastest, the most important)体现“神奇”。
结合数据(如蓝鲸体重200吨、竹子一天生长一米)增强说服力。
加入感官描写或情感表达(如“蜜蜂的舞蹈很有趣”“蓝鲸的游动很美”)。
【写作题目】
题目:The Wonder of [动植物名称]
提示:
选择一种你觉得神奇的动植物(如蓝鲸、竹子、蜂鸟)。
描述其独特之处(如体型、习性、功能)。
说明它为何让你感到神奇或对自然的意义。
【佳作展示】(以“竹子”为例):
The Wonder of Bamboo
Bamboo is one of the most amazing plants in nature. It can grow almost 1 meter a day. Unlike trees, bamboo is a grass, but it can be as tall as a 10-floor building.
It’s the most useful plant in daily life too. People use it to build houses, make tools, and even eat bamboo shoots.In Chinese culture, bamboo is a symbol of strength and honesty.
bamboo shows how closely we’re connected to nature. We can’t live without them. Let’s protect them and keep our planet lively!
【写作练习】
请以“The Amazing Animals in My Eyes”为题目进行写作
要求:
介绍一种你觉得神奇的动物,讲讲你认为它神奇的理由,最后呼吁大家保护这种动物。
字数:80 - 120词。
The Amazing Animals in My Eyes
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
参考答案
Nature is full of amazing animals. But in my eyes, bees are the most special.
Bees are the most hard-working animals. Their greatest job is pollination. They visit 50 to 100 flowers in one trip, and without their help, about 80% of plants can’t grow. This makes them the most important workers in nature! Also, bees communicate by dancing. When one finds food, it uses special moves to tell others. It's so interesting!
In a word, we can’t live without bees. Let’s protect them and keep our earth lively!

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