上海版牛津英语8Bunit1Trees精品课件-知识点全
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牛津版上海版八年级下册_unit_1_trees_progress_file_1课件-(英语)AUqPKK
Complete the sentences by putting the verbs in brackets into the present continuous or simple present tense.
10 Where is May? _____I_s_____ she ___w_o_r_k_in_g___ (work) on the computer now?
13 Mum can’t come to the phone now. She __i_s_h_a_v_i_n_g__ (have) a shower.
14 Look at this sign. _____D_o_____ you _u_n_d_e_r_s_t_a_n_d_ (understand) what it means?
11 Look! Those policemen by the bank _a_r_e_c_a_r_r_y_i_n_g (carry) guns!
一分耕耘一分收获
12 Many people _d__o_n_’t_k_n_o_w__ (not know) how to use a video camera.
town.
一分耕耘一分收获
Rewrite these sentences in the present continuous tense. 7 The traffic moves slowly.
The traffic is moving slowly. 8 Do you e you sitting in the front now? 9 Alice lies on the beach and Ben plays volleyball.
Alice is lying on the beach and Ben is playing volleyball
2019教育牛津版上海版八年级下册 Unit 1 Trees Speaking课件 共10张PPT数学
Our group thinks that the most important way to fight pollution is to ______. The second is to ______. The third is to ______. The fourth is to ______. The fifth is to ______.
Ways to fight pollution
Can you think of some ways that people can do to fight pollution in our daily life?
B1 Read this conversation.
Bob Amy
Bob Amy
Bob Amy
plastic cards
good driver
some money
Bob Brown
clear report
most TV
big group
top prize
enough food
nine nights
A2 Practise saying these sentences. Link the words where indicated.
Word linking (I)
When we say words together that finish and start with the same consonant sounds, we only pronounce one of the sounds.
A1 Say these pairs of words together.
B2 Work in groups of 5 to 7.
(完整版)上海牛津英语8BU1-Trees词组.doc
8BU1-Trees1.average ages2.be known as3.the city flowers of Shanghai4.air pollution/water pollution/noise pollution5.collect some facts for a class project on pollution6.be interested in7.living things8.make streets more beautiful and less noisy9.breathe pure, cool air10.thank sb. for sth.11.take harmful gases from the air12.release oxygen back into the air13.one and a half hectares of trees14.keep your whole class alive and healthy for a whole year15.as well as16.natural air conditioners17. do the job of⋯18.for example19.attack a tree20.warn sb. of sth.21.warn sb. not to do sth.22.produce a chemical that makes their leaves taste nasty23.join their roots together underground24.pass ⋯ to ⋯municate with one another/each other26.be in great danger27.destroy our best fighters against pollution28.replace hardly any of them29.protect sb. from sth.30.belong to31.contain a lot of books32.provide sb. with sth.33.provide sth. for sb.34.fight pollution35.agree with these suggestions36.remove dust37.reduce sound pollution38.urban areas39.add beauty to40.supply sb. with sth.41.supply sth. to sb.42.cure illnesses43.make a difference 平均年作。
牛津版上海版八年级下册 Unit 1 Trees Speaking课件
Hale Waihona Puke Ways to fight pollution
Can you think of some ways that people can do to fight pollution in our daily life?
B1 Read this conversation.
Bob What can we do to fight pollution? Amy Always put rubbish in rubbish bins, and stop using plastic bags for shopping. Bob Anything else? Amy Stop factories and cars from producing harmful gases, plant more trees and flowers in the streets, and make our classrooms less noisy. Which ways are more important?
plastic cards some money clear report good driver
Bob Brown
most TV top prize nine nights
big group
enough food
A2 Practise saying these sentences. Link the words where indicated.
Word linking (I)
When we say words together that finish and start with the same consonant sounds, we only pronounce one of the sounds.
牛津版上海版八年级下册 Unit 1 Trees课件 (共27张PPT)
I ______________ (read) a book about Japan. It _____________ (contain) a lot of interesting information. It ______________ (belong) to the library.
George ______________ (cook) dinner. It ______________ (smell) delicious. I hope it ______________ (taste) delicious too.
Read the following sentences:
Complete these dialogues about the pictures. Use the verbs in brackets in the present continuous or simple present tense. Add other words as necessary.
hate
taste
love
belong to
We do not often use the verbs in the box below in the present continuous tense. Instead, we use them in the simple present tense.
• I know her.我认识她。(不能说:I am knowing her.)
• He likes the TV play.他喜欢这部电 视剧。(不能说:He is liking the TV play.)
think know like
contain mean
2019年牛津版上海版八年级下册 Unit 1 Trees Speaking课件 (共10张PPT)精品物理
B2 Work in groups of 5 to 7.
1 Choose a group leader. 2 Discuss the five ways
to fight pollution mentioned by Amy. 3 Arrange them in order of importance. 4 Ask the group leader to announce the group’s list to the class like this:
What can we do to fight pollution? Always put rubbish in rubbish bins, and stop using plastic bags for shopping. Anything else? Stop factories and cars from producing harmful gases, plant more trees and flowers in the streets, and make our classrooms less noisy. Which ways are more important? I think that …
Word linking (I)
When we say words together that finish and start with the same consonant sounds, we only pronounce one of the sounds.
A1 Say these pairs of words together.
Our group thinks that the most important way to fight pollution is to ______. The second is to ______. The third is to ______. The fourth is to ______. The fifth is to ______.
牛津上海八下-8B-Unit1-Trees-知识点梳理
8B Unit 1 TreesP11. nature n. 自然；天性---natural a. 自然的；天生的；本能的---unnatural a. 不自然的e.g. ◆keep the balance of nature 保持生态平衡in nature 在自然界◆natural food 天然食品 a natural footballer 一个天生的足球运动员2. seed n. 种子3. strange a. 奇怪的；陌生的---stranger n. 陌生人P21. live v.=exist 生存；居住-- life n.(lives) 生活；生命--living a. 活着的；逼真的--alive a. 活着；在世e.g.◆save one’s life 救某人的命◆lose one’s life 失去某人的生命save his life lose your lifesave our lives lose their lives◆all living things 一切生物◆keep sb. alive使某人活着Latin is not a living language. find himself alive发现他自己还活着拉丁语不是现代用语。
The great man is still alive. 那个伟人还活着。
2. on the left 在左边---on the right 在右边3. average a. 平均的 e.g. ◆He is average height. 他中等身材。
The average age of the students is 15.平均年龄4. mouse n. –mice pl. 老鼠5. tortoise n. –tortoises pl. 乌龟6. human n. 人类–humans pl. a. 人的；人类的 e.g. human beings 人类7. pollute v. 污染–pollution n. e.g. air pollution water pollution noise pollutionpolluted a. 被污染的 e.g. The water is polluted. 这水被污染了。
上海牛津英语8B Unit 1 Tree
8B unit 1 Trees 语法知识点讲解1.pollution fighter 环保卫士= fighter against pollution.污染(v)__________.e,g, ________________________. 我们承诺不污染河流。
噪音污染___________ 水污染____________polluted (adj) 不干净的e,g. ______________________别吃不干净的食物.2.Fight.(v/n )He put up a fight to the end. 他坚持斗争到最后Don’t fight with your classmates! 别和班级同学打架。
斗士，卫士________________ 环保卫士__________________Fighting,加油！=come on（口语）3.She is interviewing Doctor Ray, a scientist ,about tree.Interview, (v/n),采访，面试我想采访一下我们的校长（headmaster）__________________________________.我有一个面试要参加（to attend）_______________________________________.4.Science ,n,科学e.g. It is important to study science and technology.(科学和技术)科学家(n )_______________e.g. Qian Xueshen was ________________________。
一名伟大的中国科学家。
Scientific (adj) 科学的例如：Scientific experiment5.be interested in = be keen on=be fond of= really like 对...感兴趣6.They are the biggest and oldest living things on the earth.= They are _____ _____ ______ than _______ _______ living thing on the earth.living 前置定语形容词，The brain is called a _______________（活电脑）。
最新上海牛津沪教版八年级(下)同步讲义unit1
第一讲Unitl Tree教学过程一、课堂导入教师讲述一个与本节课题目有关的英文小故事，引出今日所要讲解的知识点，然后让学生简单梳理一下所涉及的问题，带着问题学习本节课的内容。
二、复习预习教师引导学生复习上节课学的重点内容，检测单词的用法，(以提问、回顾的形式进行)，针对上节课的作业进行讲评、订正、答疑，并通过英文小故事导入本节课所要学习的新知识。
三、知识讲解1.知识点一：重点单词1)average[??v ?r?d?]【词性】adj.【词义】平均的【经典例句】Match the living things on the left with the average ages on the right. 把左边的生命和右边的平均年龄连线。
2)item [a2?m]【词性】n.【词义】一件物品【易混淆点】item 一件物品；项目event 活动项目【经典例句】Which of the following items come from trees?以下哪件物品时来自树？3)product [?Dr?d?kt]【词性】n.【词义】产品【易混淆点】product产品produce 生产【经典例句】This is kind of new product.这是一款新的产品。
4)fighter [fa2?(r)]【词性】n.【词义】斗士；战士【易混淆点】fight战斗fright 使惊吓【经典例句】The pollution fighters are probably scientists.抗污染战士可能是科学家。
5)fact [f?kt]【词性】n.【词义】事实【易混淆点】fact事实truth真理【经典例句】Judy is collecting some facts for a class project on pollution.Judy正在为一个关于污染的班级报告搜集一些事实。
6)scientist 务a??irst]【词性】n.【词义】科学家【易混淆点】scientist科学家science 科学【经典例句】She is interviewing Doctor Ray, a scientist about trees.她正在面试Ray博士，一位有关树木的科学家。
牛津版上海版八年级下册Unit1TreesReading课件培训资料
5 What do you think the unit’s topic will be about? Trees or plants.
Before you read the interview, try this online quiz.
1 Match the pictures with the words.
a mice b trees c tortoises d whales e humans
i 70 years ii 150 years iii 40 years iv 4,000 years v 3 years
3 What does pollution mean?
4 Which kind of pollution do trees help fight? a) air pollution b) water pollution c) noise pollution d) all of the above
If I plant this seed in the ground, will it become a pear tree, Hi?
Yes, Lo.
That’s strange. It’s an apple seed.
1 Where are Hi and Lo? They are in the garden.
c) Cotton plants are planted fresh every year in tropical and subtropical areas. Cotton is used to make fabrics.
d) oil, e.g., coconut oil, palm oil e) Tea is made from leaves. f) Rubber is made from the sap of the
Before you read the interview, try this online quiz.
1 Match the pictures with the words.
a mice b trees c tortoises d whales e humans
i 70 years ii 150 years iii 40 years iv 4,000 years v 3 years
3 What does pollution mean?
4 Which kind of pollution do trees help fight? a) air pollution b) water pollution c) noise pollution d) all of the above
If I plant this seed in the ground, will it become a pear tree, Hi?
Yes, Lo.
That’s strange. It’s an apple seed.
1 Where are Hi and Lo? They are in the garden.
c) Cotton plants are planted fresh every year in tropical and subtropical areas. Cotton is used to make fabrics.
d) oil, e.g., coconut oil, palm oil e) Tea is made from leaves. f) Rubber is made from the sap of the
上海牛津版八年级下册Unit1 Trees 同步讲义 解析版
上海牛津版八年级下册同步讲义Unit 1 Trees一、词汇Words1. interest n. 兴趣v. 使好奇--- interested adj. 感兴趣的--- interesting adj. 有意思的，引人入胜的某人对（做）某事感兴趣(1) Now he’s grown up he no longer takes any __ interest ____ in his stamp collection.(2) Are you ____ interest _____ in history?2. living adj. 活着的（做定语）n. (U)生活方式alive adj.活着的（做表语）live adj. 有生命的，现场直播v. 生存，活着有生气的，活泼的e.g. living things 活的生物，make a living 谋生，a live broadcast 现场直播，live in England 住在英国lively imagination 生动的想象力，have a lively time 有一段够刺激的经历3. harm n.& v. 伤害，损害--- harmful adj. 有害的---harmless adj. 无害的harmfully adv.有害地--- harmlessly adv.无害地e.g. (1) Pollution causes ____ harm ____ to lakes and beaches.(2) Gossip can __ harm _____ other people.(3) Smoking is____ harm _____ to your health.n. 化学物品--- chemist n. 化学家--- Chemistry n. 化学(1) __ Chemistry __ change 化学变化(2) _____ Chemistry ___ lab 化学实验室(3) The farmers used a ____ chemical ____ to kill the insects in their fields.5. danger n.----safety (opp.)dangerous adj.----safe (opp.)(1) In war a soldier’s life is full of ____ danger ____.(danger/ dangerous/ dangerously)(2) The river is dangerous ____ for bathers. (danger/ dangerous/ dangerously)(3) Are these toys ____safe ___ for small children? (safety/ safe/ safely)(4) ___ Safety _____ First. (safety/ safe/ safely)6. make(1) make=create 制造，生产e.g. They’ve made a film about her life. 他们拍了一部有关她的生活的电影。
牛津上海八下8BUnit1Trees知识点梳理.pdf
8B Unit 1 TreesP11. nature n. 自然；天性---natural a. 自然的；天生的；本能的---unnatural a. 不自然的e.g. ◆keep the balance of nature 保持生态平衡in nature 在自然界◆natural food 天然食品 a natural footballer 一个天生的足球运动员2. seed n. 种子3. strange a. 奇怪的；陌生的---stranger n. 陌生人P21. live v.=exist 生存；居住-- life n.(lives) 生活；生命--living a. 活着的；逼真的--alive a. 活着；在世e.g.◆save one’s life 救某人的命◆lose one’s life 失去某人的生命save his life lose your lifesave our lives lose their lives◆all living things 一切生物◆keep sb. alive使某人活着Latin is not a living language. find himself alive发现他自己还活着拉丁语不是现代用语。
The great man is still alive. 那个伟人还活着。
2. on the left 在左边---on the right 在右边3. average a. 平均的 e.g. ◆He is average height. 他中等身材。
The average age of the students is 15.平均年龄4. mouse n. –mice pl. 老鼠5. tortoise n. –tortoises pl. 乌龟6. human n. 人类–humans pl. a. 人的；人类的 e.g. human beings 人类7. pollute v. 污染–pollution n. e.g. air pollution water pollution noise pollutionpolluted a. 被污染的 e.g. The water is polluted. 这水被污染了。
牛津版上海版八年级下册Unit1TreesReading课件
牛津版上海版八年级下 册Unit1TreesReading
课件
2020/8/18
If I plant this seed in the ground, will it become a pear tree, Hi?
Yes, Lo.
That’s strange. It’s an apple seed.
Magnolia trees (c) are small to medium-sized trees noted for their large, showy blossoms in early spring, and large leaves.
A Before you read the interview, look at the title, the introduction and the pictures.
JUDY Forty-six. DR RAY Well, one and a half hectares of trees could produce
enough oxygen to keep your whole class alive and healthy for a whole year. JUDY That’s wonderful! DR RAY Trees cool the air as well as clean it. They are natural air conditioners. Three trees can do the job of 15 air conditioners running almost all day.
There are many different kinds of palm trees (b). The coconut palm produces coconuts whose outside shell (the husk) can be made into ropes or burned for firewood. The milk can be drunk and the flesh of the coconut can be eaten. Oil pressed from the flesh is used both for cooking and in skin creams. The leaves are used to make brooms.
课件
2020/8/18
If I plant this seed in the ground, will it become a pear tree, Hi?
Yes, Lo.
That’s strange. It’s an apple seed.
Magnolia trees (c) are small to medium-sized trees noted for their large, showy blossoms in early spring, and large leaves.
A Before you read the interview, look at the title, the introduction and the pictures.
JUDY Forty-six. DR RAY Well, one and a half hectares of trees could produce
enough oxygen to keep your whole class alive and healthy for a whole year. JUDY That’s wonderful! DR RAY Trees cool the air as well as clean it. They are natural air conditioners. Three trees can do the job of 15 air conditioners running almost all day.
There are many different kinds of palm trees (b). The coconut palm produces coconuts whose outside shell (the husk) can be made into ropes or burned for firewood. The milk can be drunk and the flesh of the coconut can be eaten. Oil pressed from the flesh is used both for cooking and in skin creams. The leaves are used to make brooms.
2019年牛津版上海版八年级下册 Unit 1 Trees Reading课件 (共54张PPT)精品物理
既来之则安之安的用法1. 引言“既来之则安之安”是一句古老的谚语，意为当面临一种无法改变的情况或困境时，应该接受现实并保持平静和冷静。
这句谚语在人们的日常生活中扮演着重要的角色，帮助人们面对挑战、适应变化和保持内心的平衡。
本文将深入探讨”既来之则安之安”的用法，并提供一些实际应用的例子。
2. 意义和原理“既来之则安之安”这个谚语反映了人们在面对不可改变的现实时应该采取的态度。
它强调了接受现实、调整心态和寻找解决问题的方法。
这个原理可以在各个方面得到应用，无论是工作、学习还是人际关系。
3. 在工作中使用在职场上，我们经常会遇到各种挑战和困难。
当我们面临无法改变的情况时，采取”既来之则安之安”的态度可以帮助我们更好地处理问题。
例如，如果我们遇到一个不能满足客户需求的项目，我们可以接受现实，并尽力提供其他解决方案，以确保客户满意。
另外，当我们面对一个不公平的工作环境时，我们可以采取积极的态度，寻找其他机会或改变自己的工作方式。
4. 在学习中使用在学习过程中，遇到困难和挫折是常有的事情。
当我们面临一个难以理解或掌握的概念时，采取”既来之则安之安”的态度可以帮助我们更好地应对。
相反地，如果我们一直抱怨并放弃学习，那么我们将无法克服困难并取得进步。
因此，在学习过程中要保持积极的心态，并相信自己能够克服困难。
5. 在人际关系中使用人际关系是生活中非常重要的一部分。
当我们面临与他人之间出现冲突或矛盾时，采取”既来之则安之安”的态度可以帮助我们更好地处理问题。
例如，在与同事之间发生分歧时，我们可以保持冷静并尝试寻找妥协的方法。
另外，在家庭关系中也同样适用。
当我们面临家庭成员的不理解或争吵时，我们可以保持平静并通过沟通解决问题。
6. 实际应用下面是一些实际应用”既来之则安之安”的例子：•当你错过了火车，你可以接受现实，并找到其他交通方式到达目的地。
•当你面对失业时，你可以保持积极的心态，并寻找其他工作机会。
•当你在学习一门新的语言时，遇到困难时，你可以保持耐心，并寻求他人的帮助。
沪教牛津上海本地英语八年级下(8B)M1U1 trees 基础语法 解析
8B Unit-1Part 2Phonetics,Vocabulary and Grammar （第二部分语音、词汇和语法）26.Which of the following underlined parts is different in pronunciation?municate B.produceC.productD.protect 27.A robot can do____________job of several human workers in a factory.A.theB./C.anD.a28.More Chinese people are interested_________travelling around the world.A.for B.in C.at D.with 29.We practise_________English to get a better score in an oral test.A.to speak B.speak C.spoke D.speaking30.People in Shanghai are beginning_________the importance of sorting rubbish.A.understood B.to understand C.understand D.realize 31.Car accidents kill_________around the world every year lions lions oflionlion of32.Jack's home is only_________from school.A.two miles and halfB.two and a half mileC.two and a half milesD.two and half a miles 33.The Lis think that living in the suburbs is_________and more pleasant.A.quite noisy B.the noisiest C.much noisier D.less noisy34.What_________can trees do for the environment beside producing oxygen ?A.else B.also C.too D.other 35.Students must learn how to protect_________from school bullying.A.theyB.themC.themselvesD.theirs 36.l don't suppose Mr Hu will agree with our project.The underlined word probably meansA.suggestB.adviseC.supplyD.think 37.Look.Henry and Jenny_________badminton on the beach.A.playedB.are playingC.playD.have played38.In the last 20years ，great changes _________across Shanghai.A.would take placeB.took placeC.taken placeD.take place 39.—Why don't some people like to sort rubbish?—The reason is_________they haven't fully known its importance.A.that B.howC.whyD.what40.—Trees are great fighters against air pollution._________?—Of course.A.Are they all rightB.Anything elseC.Is that rightD.Are you sure表语从句被定语修饰be interested in doing sth对做某事感兴趣practise doing sth 练习做某事begin to do sthbegin doing sth 开始做某事数百万人two and a half miles= two miles and a halfless 更少的，little 的比较级what else 别的什么事情where else 别的什么地方who else 别的谁when else 别的什么时间protect oneself 保护自己认为建议建议提供look,listen,now 等词，正在进行时态in the last 20 years 过去20年里用现在完成时态，过去发生 的事情将持续下去那是对的吗？that 指代树是抗击污染这件事。
上海牛津英语BunitTrees知识点全PPT学习教案
Trees 1.live much longer than people;√ 2.produce wood, rubber,paper,etc.; √ 3c.hoeoalt the air; aannnot clean the air 5.are like air conditioners. √ 6.can't protect themselves against insects. 7.can share food and water with one another. √ 8.are in danger,mainly from inhsuemcatsn. beings
2 interviewing them questions
3 breathing C a careful study of a subject by
4 natural
school or students
5 warn
D taking in air
E something produced by or used in
interested
be interested in =take an interest in
interesting interest
第11页/共56页
类似的词有： surprised (adj) 感到惊讶的 surprising(adj) 令人惊讶的 surprise (n) 惊讶 fr ig htened- fr ig htening - fr ig hten excited- exciting - excite
Hold your _______.
breath
breathe
第13页/共56页
4.Trees are natural air conditioners. natural adj 自然的，天生的 nature n. 大自然，天然
2 interviewing them questions
3 breathing C a careful study of a subject by
4 natural
school or students
5 warn
D taking in air
E something produced by or used in
interested
be interested in =take an interest in
interesting interest
第11页/共56页
类似的词有： surprised (adj) 感到惊讶的 surprising(adj) 令人惊讶的 surprise (n) 惊讶 fr ig htened- fr ig htening - fr ig hten excited- exciting - excite
Hold your _______.
breath
breathe
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4.Trees are natural air conditioners. natural adj 自然的，天生的 nature n. 大自然，天然
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6.The other trees then produce a chemical to make their leaves taste... produce v.产生 product n.产品
The factory p_r_o_d_u_ce_s_many cars every year. This boy used to like French_p_ro_d_u_c_t_s .
4.Trees are natural air conditioners.
natural adj 自然的，天生的 nature n. 大自然，天然
Some desert countries have few natural resources. Nature is at its best in spring.
trees
rubber
beans cotton
tea oil
Which is the Shenzhen city flower?
azaleas
B Look and think
Look at the title, the introduction and the pictures. Which are T or F?
3.Do you enjoy breathing fresh air? enjoy doing sth 喜欢做某事 他喜欢看故事书。 He enjoys reading story-books.
breath n 呼吸 breathe v 呼吸
All the animals need to b_r_e_a_t_h_e to live. Hold your _b_r_ea_t_h__.
another.
1.Pollution Fighters pollution (n.) pullute (v.)
Pollutions are becoming very serous The dirty rubbish polluted the air.
fighter (n.)
fight(v)
He is a fire fighter Don’t fight each other, boys.
1. How long do they live on the earth?
mice
mimi pine trees dolphins
a. 75 years b.14 years c.25 years d.1,200 years e.2 years
Pollution means the process of making things dirty and unhealthy.
9.We cut down and burn a lot of trees.
cut down 砍倒
cut the tree down=cut down the tree cut it down (V) cut down it (X) Don’t cut down the tree
air pollution noise pollution water pollution Which type of pollution do trees help fight?
all of the above
3. Which of the following come from trees?
apples
make sth /sb do sth
7.Trees are communicating with one another.
communicate with 与...交流
In the past, people would often communicate with each other using letters. one another 彼此，互相
If I plant this seed in the ground will it become a pear tree,Hi?
Yes
a seed
a pear
That's strange.It's an apple seed.
Pollution fighters
How much do you know about trees
2.Why are you so interested in trees?
interested (adj) interesting(adj) interest (n)
感兴趣的 有趣的 兴趣
Mary is _in_t_e_r_e_st_e_d_ in _in_t_e_re_s_t_in_g_ coins. She also takes an _in_t_e_re_s_t__ in stamps.
F 1. The “pollution fighters” are probably scientists.
F 2. Few useful things come from trees. F 3. Trees give out harmful gases. T 4. Trees can pass information to one
be interested in =take an interest in
类似的词有：
surprised (adj) 感到惊讶的 surprising(adj) 令人惊讶的 surprise (n) 惊讶 frightened-frightening-frighten excited-exciting-excite
8.Are tree in danger? be in danger 处于危险之中 danger (n ) dangerous （adj)
在这场洪水灾难的人们处于危险之中
The people in the flood is in danger. 这场大火十分危险
The big fire is v example, whe insects ..., it can warn its neighours.
warn v 警告
I tried to warn him to keep away from that dog, but he would not listen.
warn sb to do sth