Unit 5 Working The Land-using language 单词、课文讲解（ppt课件）-2022新人教版（2019）《高中英语》选择性必修第一册.pptx

1、高中英语选择性必修一高中英语选择性必修一Unit5 Using Language单词以及课文讲解1.chemical (adj.)化学的；(n)化学品拓展：Chemist (n)化学家 Chemistry (n)化学 Chemically (adj)化学地2.nutritional (adj)营养的拓展：nutritionally (adv)滋养地 nutritionist (n)营养学家3.alleviate (v)减轻，减缓拓展：alleviation (n)缓和4.in poverty 处于贫困当处于贫困当中5.Organic (adj)有机的 organically (adv)有机地，

2、有组织地6.More/most widespread 更/最广泛的7.In turn 轮流轮流 It is ones turn to do sth 轮到某人做某事 Take turns in doing sth =take turns to do sth 依次/轮流做某事8.digest (v)消化；领悟 (n)摘要 digestion (n)消化 have a good/poor digestion 消化能力强/弱 digestible (adj)易消化的；易理解的9.essential (adj)极其重要的；完全必要的 be essential to/for.对.很重要 It is ess

3、ential(for sb.)to do sth (对某人来说)做某事很重要 It is essential that.(should)do.做.很有必要 essentially(adv)根本上，基本上 essence(n)本质，实质 in essence 本质上，实质上10.alternative(n)可供选择的事物 an alternative to.的替代品 have no alternative but to do sth =have no choice but to do sth 除了做某事之外别无选择 alternative (adj)可供替代的 an alternative me

4、thod/way of doing sth 做某事的其他方法 alternatively(adv)要不；或者11.depth (n)深度 at/to a depth of.到/在.的深度 in depth 全面，深入，详细 deep (adj)深的 be deep in thought 陷入沉思 deeply (adv)非常，很 deepen (v)加深，变深12.entirely (adv)全部地，完全地 entire (adj)全部的 entirety (n)全部，完全14.aspect (n)方面，层面 an aspect of.的.方面CHEMICAL VERSUS ORGANIC F

5、ARMING 知识点知识点(P55)1.chemical pesticides 化学农药2.artificial fertilisers 人工肥料3.be in widespread use 在(广泛)使用中4.since+时间段 (现在完成时的标志词 结构：have/has done)5.fight crop disease 防治农作物病害6.increase production 增加/提高产量7.over time,随着时间的推移8.For example,例如9.not only.but also.不仅.而且.10.In addition,另外，此外11.for a long time

6、 很长时间，很久12.in turn 转而，相应地13.in fact 事实上14.as for 至于15.too+adj.+to do sth 太.而不能做某事16.as well 也，又，还17.turn to 转向18.focus on doing sth 集中精力做某事19.free from/of.使.免受.的伤害20.many other+可数名词复数 许多其他的.课本p5621.would prefer to do sth 宁愿做某事22.keep sb.from doing sth 阻止某人做某事23.serve the high demand of.满足.的高需求24.now

7、here near 远不及，离.很远25.meet ones need 满足某人的需求26.as healthy as possible 尽可能的健康句型教材P56 What keeps them From doing so（主语从句）is the fact（表语）that chemical farming serves the bigh demmand for food around the world.（同位语从句）阻止他们这样做的原因是化学耕作满足了全球对食物的高需求这一事实。同位语从句同位语从句(1)同位语从句通常说明主句中的名词。这些名词一般是抽象名词,常见的有：belief,dou

8、bt,explanation,hope,idea,opinion,possibility,request,thought,wish,truth,fact,question,problem,reply,secret,suggestion,adviee,order,warning。(2)同位语从句一般由连接词that,whether、连接代词(whatwhich,who)、连接副词(when，where,why,how)引导。1.that,whether引导同位语从句时在从句中不作成分，that无意义，whether表示是否。2.what,which,who引导同位语从句时在从句中作成分，what

9、 which,who分别表示什么、哪个和谁。3.when,where,why,how引导同位语从句时在从句中作成分。when,where,why,how 分别表示何时、哪里、为何和 如何”。There is no doubt that we did the right thing.毫无疑问，我们做得对单句语法填空(用所给单词的适当形式)1.If uncontrolled,the shortage (short)would set off a new rise in meat prices.2.His asssumption (assume)that human can clone animal

10、s has been confirmed in the end.3.The Employment Minister said the reforms were to generate (generate)new jobs.4.Together they dived into the_depth_(deep)of the sea to search for some rare creatures and treasures.5.Although advertisements are of great help,I dont think we should_entirely (entire)rel

11、y on them.6.We regret to hear that nearly half of the people in that area still live below the_poverty_(poor)line.7.Parents should encourage their children to overcome (overcome)difficulties and inspire them to develop by themselves.8.In the US,about one third of the population is now estimated (estimate)to be overweight.9.The historian sees local history as an extension (extend)of family history.10.Consumption_ (consume)of cotton increased even though its price had risen a lot.