Unit 4 Astronomy: the science of the stars,话题科学技术 假设你将参加某英语杂志社开展的一次征文活动，征文的内容要求你在电视、手机(cell)和网络三者中，放弃其中一个并陈述理由。请你以“Which would you give up: TV, cell, or Web？”为题，写一篇英语短文。,话题词汇 1update vt.更新；使现代化 2artificial adj.人造的 3intelligent adj.智能的 4negative effect 负面影响 5scientific breakthrough 科学突破 6potential ability 潜能,话题佳句 1No invention has received more praise and abuse than the Internet. 没有一项发明像互联网一样同时受到如此多的赞扬和批评。,2Its believed that computer skills will help people enhance job or promotion chances. 大家都认为计算机技术可以帮助人们获得更多工作或提升机会。 3We will spare no efforts to catch up with the advanced world levels. 我们将努力赶上世界先进水平。,.单词速忆 1_vt.&n拉(力)；拖；牵引力 2_vi.&vt.(使)浮动；(使)漂浮 n漂浮物 3_n学说；理论 4_n系统；体系；制度 5_n大气层；气氛,pull float theory system atmosphere,6_adv.因此；于是 7_vt.&vi.(使)迷惑；(使)为难n.谜；难题 _ adj.迷惑不解的 8_vi.存在；生存 _n存在；生存；生活(方式) 9_n生物学 _ n生物学家,thus puzzle puzzled exist existence biology biologist,10_n物理学家 _ n物理学 _ adj.物理的；物理学的 11_n宗教；宗教信仰 _ adj.宗教的；虔诚的 12_adj.有害的 _ n&vt.伤害；损害；危害 _ adj.无害的,physicist physics physical religion religious harmful harm harmless,13_adj.猛烈的；激烈的；强暴的 _adv.强烈地；猛烈地；激烈地 _n暴力；暴力行为 14_ prep.与不同；不像 _(反义词) prep.像 _v&n.不喜欢,violent violently violence unlike like dislike,.短语快译 1_阻止；制止 2_爆发；突发 3_下蛋 4_感到高兴；感到振奋 5_密切注视；当心；提防,preventfrom break out lay eggs cheer up watch out,6_产生；分娩 7_挡住(光线) 8_太阳系 9_及时；终于 10_轮到某人；接着 11_既然,give birth to block out solar system in time in ones turn now that,.句式仿写 1The earth became so violent that it was not clear whether the shape would last or not.(sothat) 仿写： 我的英语非常好，被选为英语老师的助手。(2015陕西) My English is _ I am elected as assistant to my English teacher. 【答案】so good that,2This produced a chain reaction, which made it possible for life to develop.(make it possible for sb./sth.to do) 仿写： 从这个故事中，我明白了勤奋能使我们克服巨大困难的道理。(2015福建) From the story, I have learned a lesson that hard work _ great difficulties. 【答案】makes it possible for us to overcome,3I found I was carried twice as far as on the earth and fell over.(倍数表达法) 仿写： 这条河流是那条河流的三倍长。 This river is _ that one. 【答案】three times as long as,4Walking does need a bit of practice now that gravity has changed.(now that引导原因状语从句) 仿写：期终考试结束了，孩子们看上去都很轻松愉快。 The children looked lighthearted _ _. 【答案】now that the final exam was over,.单元语法 主语从句 用合适的关系词完成下面的句子 1It is required in the regulations _ _ you should not tell other people the password of your email account. 2_ is known to all is _ Diaoyu Island is part of China.,3_ breaks the law cant escape being punishment. 4It remains to be seen _ the newly formed committees policy can be put into practice. 5_ different countries have different traditions is natural. 【答案】1.that 2.What；that 3.Whoever 4.whether 5That,.教材活用 根据课文内容，在空白处填入适当的内容(1个单词)或括号内单词的正确形式 At the very 1._ (begin), the earth was just a cloud of energetic dust.Then the dust 2._ (combine) into a ball moving around the sun.After that, it exploded loudly with fire and rock, 3._ (produce) water vapor, carbon, nitrogen and other gases,4._ in the end made the 5._ (earth) atmosphere.,Then the earth cooled down, and water, one of the earths special 6._ (quality), appeared and stayed on the earth, which made it possible for life to begin to develop.Some small plants growing in the water appeared on the earths surface, followed by land animals,7._ (include) insects, amphibians, reptiles and the most important animals called dinosaurs.,Finally dinosaurs disappeared all of 8._ sudden and some small clever animals 9._ _ hands and feet appeared and spread all over the earth.In place of dinosaurs they became the10._ (important) animals on the planet that is, human beings.,【答案】1.beginning 2.combined 3.producing 4which 5.earths 6.qualities 7.including 8.a 9with 10.most important,1harmful adj.有害的 【考点激活】 Many wastes produced in the producing process are_ as well. 在生产过程中产生的很多废物也是有害的。(2015江苏),(1)be harmful to sb./sth. 对某人/某物有害 (2)do harm to sb./do sb.harm 对某人有害 do more harm than good 弊大于利；害多利少 (3)There is no harm in doing sth. It does no harm (for sb.) to do sth. 做某事没有坏处 (4)harmless adj.无害的,【知识建构】,They can do more harm than good to family relationships. 对家庭关系而言，他们弊大于利。 There is no harm in making an apology to him first. 先向他道歉没有什么坏处。,【即时巩固】 一句多译 然后我意识到，浪费时间玩电脑游戏对我的学习和健康是有害的。(2015重庆) Then I realized that wasting time in playing computer games,_(harmful)