1、新知识预习探索词汇热身1_ n.液体2_ vi.膨胀3_ vi.收缩4_ n.物质5_ n.混合物6_ n.氧气7_ n.电8_ n.阶段；时期9_ n.结论10_ n.目标；目的11_ adj.与电有关的；用电的12_ n.设备；装备13_ adj.普通的；平常的14_ vi.漂浮15_ vi.形成16the same _ 和一样17think _ 想起，想到18react _ 与发生反应19put._ 将排序20_ the top/bottom 在顶/底部21keep._.使不进入22find _ 查明，发现23add._.往加入答 案：1.liquid 2.expand 3.contra
2、ct 4.substance 5.mixture 6.oxygen 7.electricity 8.stage 9.conclusion 10.aim 11.electrical 12.equipment 13.ordinary 14.float 15.form 16.as 17.of 18.with 19.in order 20.at 21.out of 22.out 23.to句型熟记1Twothirds of the earths surface is water.地球表面的三分之二是水。2It is hard to think of a world without metals.很难想
3、象一个没有金属的世界。3Here_is_a_table with the metals that react most at the top,and the metals that react least at the bottom.这里有一个表格。金属反应强的在上面，弱的在底部。篇章理解速读文章并选出最佳答案。1Which of the following metals reacts most with water?A.Copper.B.Iron.C.Aluminium.D.Sodium.2According to Passage A,which of the following react
4、s most easily when it is heated in oxygen?A.Aluminium.B.Iron.C.Steel.D.Copper.3We can know from the experiment _.A.how iron rusts with oilB.iron is quite easy to rustC.how we can prevent iron from rustingD.how iron reacts with all the other substancesDAC4If some clean iron nails are kept in a wet pl
5、ace for a week,the nails will _.A.rust B.not rustC.form an oxide D.keep the place dry5This passage mainly talks about _.A.all kinds of metalsB.what kind of metal reacts mostC.the different reactions of metalsD.how metals reactAC新课堂互动探究知识点详解重点词汇、短语1conclusion n结论【语境领悟】*I found the conclusion of his b
6、ook very interesting.我发现他的书的结尾非常有意思。*At last he made a conclusion about what we could do to keep healthy.最后他就我们做什么才能保持健康做了结论。*I drew the conclusion that he had been lying.我得出结论他是在说谎。【归纳拓展】(1)make a conclusion 下结论arrive at/come to/draw/reach a conclusion 得出结论in conclusion 最后，总之jump to a conclusion 贸然
7、断定(2)conclude vt.下结论；推断；结束*In conclusion,our president concluded his speech with a humorous story.最后，我们的主席以一个幽默的故事结束了他的演讲。即学即用【完成句子】They _ that someone had broken into the room and stolen something important.他们得出的结论是有人闯入房间偷走了重要的东西。_，Id like to say that the work has been well done.最后，我想说这工作做得不错。答案：ca
8、me to the conclusion In conclusion2aim n目标；目的 vi.对准目标，瞄准【语境领悟】*My aim is to become a policeman when I graduate from middle school.I aim to become a policeman when I graduate from middle school.我打算中学毕业以后当警察。*We aim at quality rather than quantity.我们旨在质量而不是数量。*I didnt mean to hit your car.I was aiming
9、 at that tree.我不是故意打你的车。我瞄准的是那棵树。【归纳拓展】(1)with the aim of 目的是without aim 无目的地(2)aim at 瞄准(sth.)；目的在于(sth./doing sth.)；针对(sb.)aim to do sth.打算或旨在做某事be aimed at 目的是，旨在(3)aimless adj.无目的的；无目标的*We aim to be there around six.我们力争六点左右到那儿。*These measures are aimed at preventing violent crime.这些措施旨在防止暴力犯罪。即
10、学即用【用 aim 短语完成句子】I always _ become a successful man._，I came to Shanghai last year.I _ finding a better life.我一直想成为一名成功人士。带着这个目标，去年，我来到了上海，旨在寻求一种更好的生活。答案：aim to;With this aim;aimed at3equipment n设备；装备【语境领悟】*We left our equipment out that night.那天晚上我们把设备放在了外面。*Our laboratory equipment isnt perfect,bu
11、t we must make do.我们的实验室设备不够理想，但我们必须将就一下。【归纳拓展】equip vt.装备，配备(equipped,equipping)equip sb./sth.with./be equipped with 用装备；使具备；为准备equip sb.to do sth.使某人能做某事be equipped to 把装在上be(well/fully)equipped for.完全具备*We should equip our children with a good education.我们应使我们的孩子受到良好教育。*She was equipped with know
12、ledge for the vocation.她具备从事这项职业的知识。即学即用【完成句子】摄影室的装备很昂贵。_ of the studio is very expensive.她所受的训练使她有能力去应付这项新的工作。Her training _ her _ with the new job.这位总统颇具演说才能。The President _ public speaking.答案：The equipment equipped;to cope is equipped for4react vi.(化学)反应【语境领悟】*When we use metals,it is important t
13、o know how they react with different substances,for example,water and oxygen.当我们使用金属的时候，知道它们与不同的物质，比如水和氧，是怎么反应的，是很重要的。*The management reacted to the demand of workers by increasing their wages since April.管理者对工人的要求作出反应，答应从四月份起增加工资。*Unkindness often reacts on the unkind person.恶人常有恶报。*Most people rea
14、cted against the passing of the law.多数人反对通过这项法律。【归纳拓展】(1)react to 作出反应，回应react against 反对，反抗react with(指物质)与起化学反应react on/upon sth.对某事物有影响，对某事物产生变化(2)reaction n反应，回应(to)【巧学助记】We all wanted to see her reaction about this matter,but she didnt react at all.我们都想看看她对此事的反应，但她对此毫无反应。即学即用【用适当的介词完成句子】Iron re
15、acts _ water and air to produce rust.The football player reacted _ the judges decision by withdrawing(退出)from the match.What was his reaction _ the news?答案：with to to5put.in order 把按顺序排列【语境领悟】*The reaction of metals with these substances can be put in order.(不同的)金属和这些物质的反应程度可以按顺序排列起来。*It was time sh
16、e put her life in order.到了她该好好安排自己生活的时候了。【归纳拓展】in good order 秩序井然out of order 无序的in order of 按顺序keep order 维持秩序即学即用【完成句子】离开办公室前他把文件整理好。He _ his papers _ before he left the office.售货员将橱窗中的商品排列得很整齐。The sales clerk ranged the goods _ in the shop-windows.警察在街上维持秩序。Policemen _ in the streets.答案：put;in or
17、der in good order keep order6find out(经过研究或询问)查明某人/物【语境领悟】*We shall find out the truth early or late.我们迟早会查明事实真相。*How do we find out about it?我们怎么去发现这一点？【易混辨析】find out指经过研究、观察、调查而找出原因，查明事实，指有主观意识的动作find 指经过一番经历或偶然发现，强调寻找的结果，是终止性动词即学即用【完成句子】那正是你能够发现你是谁，你有什么价值的时刻。Thats when you _ who you are and what
18、your values are.我们在办公楼附近发现了一家挺好的新餐馆。We _ a great new restaurant near the office building.到目前为止人们没有找到失踪的飞机。People _ by now.科学家们想找出中国首辆月球车的故障。The scientists _ the fault of Chinas first lunar rover.答案：find out found havent found the missing plane wanted to find out7add.to.往加入；把和相加【语境领悟】*Add some oil to
19、 the water.往水里加点油。*The bad weather only added to our difficulties.这种坏天气只增加了我们的困难。*Add up your scores and see how many points you get.加加你的分数，看你得了多少分。*These numbers add up to 100.这些数目合计为 100。*After a short while,he added that he would try his best.过了一小会儿，他又接着说他会尽力。【归纳拓展】add to sth.增加某事物add up sth.把某物加
20、起来add up to 总计；共达(come to)add that.附加说【巧学助记】形象记忆 add 短语即学即用【用适当的介词/副词填空】Add _ 3,4 and 5 and youll get 12.The time I spend in commuting every day adds up _ three hours.The bad weather in Taiwan added _ the mainland tourists rescue difficulties.答案：up to to8keep out of 防止入内；不让靠近；避免麻烦【语境领悟】*This will ke
21、ep air out of the water.这可以防止空气进入水中。*Keep these animals out of the fields.别让这些动物进庄稼地里去。*Youd better keep out of these things.你最好别卷入这些事。【归纳拓展】keep(sb.)away(from sth.)使(某人)离开(某物)keep sb.from doing sth.阻止某人做某事keep in touch with 与保持联系keep up with 跟上，不落在后面即学即用【用 keep 的适当短语填空】I prefer to _ arguments about
22、 money._ dust,rain,heat source and direct sunlight.The heavy rain cant _ me _ going out.You can _ them.Jane couldnt _ the rest of the class.答案：keep out of Keep away from keep;from keep in touch with keep up with知识点详解重点句型1It_is_hard_to_think_of a world without metals.很难想象一个没有金属的世界。【句式分析】该句中 it 作形式主语，
23、真正的主语为其后的动词不定式，即 to think of a world without metals。*Its important for us to master a foreign language.对我们来说掌握一门外语是重要的。*Its careless of you to make so many mistakes in this exam.在这次考试中你出了这么多错真是太粗心了。【名师点津】介词不同意不同(1)It isadj.for sb.to do sth.(其中这类形容词常见的有：easy,important,difficult,hard,possible,impossib
24、le,necessary 等)(2)It isadj.of sb.to do sth.在句中作表语的形容词是对 sb.及其行为的评价，这类形容词有：kind,nice,good,honest,careful,careless,clever,wise,stupid,foolish,rude,polite,impolite 等。即学即用【完成句子】It _ judge her by her clothes.根据她的穿着来判断她是不公平的。We all think _ for you to have told her about the bad news.我们都认为你告诉她那个坏消息没必要。Isnt
25、 _ him to talk to his mother like that?他那样和他母亲说话是不是太粗鲁了？答案：was unfair to it is not necessary it rude of2Below_is a description of a simple scientific experiment.下面是对一个简单的科学实验的描述。【句式分析】该句式为完全倒装，其正常语序应为：A description of a simple scientific experiment is below.*In came the teacher.老师进来了。*There goes the
26、 bell.铃响了。*Up went the arrow into the air.箭嗖地一下飞到了空中。*At the top of the hill stands a weather station.山顶上有一个气象站。【归纳拓展】完全倒装小结(1)在 There be 句型中，谓语是 be,lie,live,exist 等表状态的不及物动词时，此句中的真正主语是其后的名词。(2)用于副词(here,there,now,then,in,out,up,down,away,over,off 等)开头的句子。(3)表地点的介词短语置于句首，且句子的谓语动词是 be,lie,sit,stand 等
27、词时，为保持句子结构的平衡，用完全倒装。(4)完全倒装的句子主语必须是名词，若是代词，则不能倒装。*There he goes.他走了。*Behind the counter she stood.她站在柜台后。即学即用【完成句子】Hearing the dog barking fiercely,away _.听到狗叫，小偷逃跑了。Here _ notebooks and reports I promised you last week.这是我上星期许给你的笔记本和报告。答案：fled the thief are the新思维随堂自测.根据首字母提示写出下列单词1You have added t
28、oo much l_ to the mixture.2We must build on our reputation to e_ the business.3What item do you require in the c_？4This s_ is rare in our daily life.5The e_ is off,so we must reset it.liquidexpandcontractsubstanceelectricity6What do you base this c_ on?7The medicine produced a slight r_.8Our laborat
29、ory has many kinds of e_.9It was only a p_ solution to the problem.10Would you like some juice or o_ water?conclusionreactionequipmentpartialordinary.根据汉语提示完成句子1他建议基布尔先生与他签订一份合同。He suggested Mr.Keble _ _ _ _ him.2关于这个问题，我们没有必要在此作结论。In respect of this problem,we dont have to _ _ _ here.3这个女孩做事没目标。The
30、 girl does everything _ _.4她喜欢把一切收拾得有条不紊。She likes to _ _ _ _.5这种坏天气给我们的工作增加了额外的麻烦。The bad weather _ extra trouble _ our work.make a contract withdraw a conclusionwithout aimput everything in orderaddedto6由于我以前从未到过那里，所以我很难找到他的房子。As I had never been there before,it was very difficult for me to _ his
31、house.7你能想到其他交通安全规则吗？Can you _ _ any other safety rules?8这是一种致命的毒药。把它放在孩子够不到的地方。It is a deadly poison._ it _ _ the reach of the children.findthink of Keepout of.根据课文内容填空Different metals have different uses.When we use metals,it is important to know how they react with different 1._.The 2._ of metals
32、 with these substances can be put in order.From the table,we can find potassium reacts the most with oxygen and water while copper 3._ react with water.When we heat calcium in oxygen,it burns to 4._ an oxide.To find out if iron rusts in dry air,in air-free water and in 5._ water.Lets do a simple sci
33、entific experiment.We need different pieces of 6._，which are clean iron nails,test tubes,a test tube holder,some cotton wool,oil and a Bunsen burner.Well,first,put some iron nails at the 7._ of a test tube.Then push some cotton wool down the tube.Next,leave the tube for one week.After one week,the n
34、ails have not 8._.It shows that iron doesnt rust when the air is dry.In the second part of the experiment,you must boil the water to make sure there is no air in it.You add some oil to the water because this 9._ air out of it.It also shows that iron does not rust in water without air in it.10._，the nails rust in the tube with ordinary water in the third part of the experiment.That is how iron reacts with air and with water.答 案：1.substances 2.reaction 3.doesnt 4.form 5.ordinary 6.equipment 7.bottom 8.rusted 9.keeps 10.However