1、第二学时Learning about Language,熟记附录中的语块，在语块中感悟单词的用法，然后完成下列语块。1苦苦思考一个数学问题p_ over a mathematical problem2面面相觑look at each other, p_3对大惑不解be in a p_ about.,4揪我的耳朵p_ me by the ear5地球的引力the p_ of the earths gravity6拔苗助长try to help the shoots grow by p_ them upward7振作起来c_ up,8你驾驶考试既然已经合格n_ (that) you have pa
2、ssed the driving test9发生在冬天b_ out in winter10当心蛇w_ out for snakes11天文学专家an expert in a_,12宗教的自由the freedom of r_13一个氧原子one a_ of oxygen14二十亿磅two b_ pounds15全球各地all over the g_,16横行霸道act v_17和平宁静的氛围an a_ of peace and calm18一个根本区别a f_ difference19柠檬的酸的味道the a_ taste of lemons20一个连锁店a c_ store,1However
3、，according to a widely accepted theory，the universe began with a “Big Bang” that threw matter in all directions.(p.25)然而，一种普遍为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。 词语链接begin withstart with 以开始；由作为开头to begin with 首先，第一点,即学即练选用上述词语完成下列句子。 (1)The proceedings will_a speech to welcome the guests. (2)The
4、party _ a song. (3)_，we must consider the problem all sidedly.答案：(1)begin with(2)began with(3)To begin with,2They were in time to produce carbon，nitrogen，water vapour and other gases.(p.25)它们最终产生了碳、氮、水蒸气和其他气体。词语链接in time adv.及时；终于；迟早at one time 曾经，一度at times 有时，间或,at a time 一次，依次in no time 几乎，马上地，立刻
5、on time 准时；曾经ahead of time 提前for the time being 暂时from time to time 不时地at the same time 同时，但是,即学即练用上述短语完成下列句子。(1)They sent the mail to me just_，before I left.(2)William arrived at the theatre just_for the play was to be on.(3)Hurry up! The concert will begi_.(4)_will I give up.,(5)The boy laughed an
6、d cried_.(6)_he was addicted to playing web games, but now he devotes himself to writing, which delights his parents.(7)Dont try to do everything at once, take it a bit_(8)Youll have your own office soon, but_youll have to share one with me.,(9)Were determined that the work shall be finished_(提前)答案：
7、(1)in time(2)in time(3)in no time(4)At no time(5)at the same time(6)At one time(7)at a time(8)for the time being(9)ahead of time,3Water had also appeared on other planets like Mars but unlike the earth，it had disappeared later.(p.26) 水也出现在像火星那样的其他行星上，但和地球不同，其他行星上的水后来都消失了。,即学即练根据句子的意思在括号里填入适当的词。(1)A
8、good hotel manager should know his regular guests likes and_(2)Her latest novel is quite_her earlier work.(3)If you go on like that youll get yourself_(like),(4)I was very interested in the lecture，_many of the students.答案：(1)dislikes(2)unlike(3)disliked(4)unlike,4What many scientists believe is tha
9、t the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.(p.26)许多科学家认为水的长期存在使地球得以把有害的气体和酸溶解在海洋里。词语链接harmful adj.有害的，伤害的harm v&n.伤害,harmfully adv.伤害地harmless adj.无害的 harmlessly adv.无害地be harmful to 对有害do harm to对有害do sb.harm对某人有害come to harm受到损害
10、come to no harm未受到伤害,即学即练选用上述词语完成下列句子。(1)Its_to your eyes to read in the bus.(2)Drunkenness(醉酒)_our health.(3)Nuclear power(核能) will_our health and safety if improperly used.,(4)They had done their best to _(防止小孩们受到任何伤害)答案：(1)harmful(2)is harmful to(3)do harm to(4)prevent children from any harm,5The
11、y produced young generally by laying eggs.(p.26)它们通常是通过孵蛋来繁殖后代的。lay vt.(laid, laid, laying) 放置；摆设；铺(地毯)；产(蛋)词语链接lay eggs 下蛋lay sth.aside 把某物放在一边；积蓄(钱)lay sth.down 把某物放下,lay the blame on sb.责备某人lay the table 摆桌子lay emphasis/stress on sth.把重点放在某事上He laid his hand on my shoulder.他把手放在我的肩上。Who should we
12、 lay the blame on?我们该责备谁？,即学即练根据句子的意思在括号里填入适当的词语。(1)The bird_its eggs in other birds nests. (2)He is a political leader that_(非常强调) individual responsibility.(3)He_some money_for rainy days.答案：(1)lays(2)lays great stress on(3)lays；aside,6They laid eggs too and existed on the earth for more than 140
13、million years.(p.26)它们也生蛋，在地球上生存了1.4亿年。词语链接exist vi.存在；生存existence n存在existprep.存在于地方,exist on sth.靠某物生存Does life exist on Mars? 火星上有生命吗？ I can hardly exist on the wage Im getting.我靠我挣的工资简直难以糊口。,即学即练 用exist的短语或其适当形式填空。(1)This plant_only_Australia.(2)Can you_such a low salary?(3)I doubt the_(exist) o
14、f alien.答案：(1)exists；in(2)exist on(3)existence,7Thus they have，in their turn，become the most important animals on the planet.(p.26) 于是，他们接着成为这个行星上最重要的动物。词语链接in ones turn 轮到某人；接着in turn轮流；一个接着一个by turns轮流；一阵一阵,take turns (to do sth.)轮流(做某事)Its ones turn to do sth.轮到某人做某事了Its your turn to clean the cl
15、assroom.轮到你打扫教室了。,即学即练用上述短语完成下列句子。(1)She went hot and cold_(2)In our class，each students recitation comes_(轮流)(3)They，_，made a proposal.,(4)Each of you must_(依次发言)答案：(1)by turns(2)by turns/in turn(3)in their turn(4) take turns to make a speech,8How life began on earth is one of the biggest puzzles t
16、hat scientists found hard to solve.(p.27)生命到底是如何开始的是科学家们觉得最难解决的难题之一。词语链接puzzle n难题 v迷惑 puzzlement n迷惑puzzled adj.感到困惑的puzzling adj.令人迷惑的 be puzzled about 对感到疑惑,即学即练选用上述词语完成下列句子。(1)To explain the_findings, he offers two theories.(2)I_that I havent heard from Tom for so long.(3)She listened with a_ ex
17、pression on her face.(4)No one has yet succeeded in explaining the_of how life began.(5)He_ what to do next.,(6)_(使我困惑的事情) is why he left the country without telling anyone.答案：(1)puzzling(2)am puzzled(3)puzzled(4)puzzle(5) was puzzled(6)What puzzles me,即学即练将下列句子译成英语，并分析其结构。(1)使我兴奋的是，父亲给我买了一辆单车。_(2)我是否离开这家公司去深圳取决于老板怎样对我。_,
