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1、Unit 4Astronomy: the science of the stars 第3-4课时学案制作人：靳丽梅邢彬审核人：王娜领导签字：考点新组合阅读微技能Last Sunday, a fire broke out in a building near my home and the stairs were full of smoke. We tried hard _ (get) the fire under control, though we knew the smoke was harmful to our health. Luckily, the firefighters arri
2、ved in time. Thus, they, in their turn, began to prevent the fire from spreading and save life. Depending on their professional knowledge, they quickly put out the fire, _ made all of us cheer up.1.处应填词的正确形式为to_get。2.用名词harm替换处was harmful to：did_harm_to。3.处应填关系词which。1harmful adj.有害的(1)be harmful to
3、对有害harmless adj. 无害的(2)cause/do harm to . 对造成伤害/有害mean no harm 无恶意there is no harm in doing sth. 做某事没有害处多角练透?单句语法填空Some boys are too crazy about playing games on the computer, which is very harmful (harm) to their study.If you want to solve the problem in this way, there is no harm in calling him.?单
4、句写作这些天，违反交通规则和乱扔垃圾的现象很常见，对生活和环境造成了严重的破坏。(2013安徽高考书面表达)These days, breaking traffic rules and littering are not uncommon, causing/doing_serious_harm_to_life and the environment.2in time及时；终于(1)in time for .刚好赶上in time to do sth. 及时做某事(2)in no time 立刻；马上at no time 决不(放在句首时，句子用部分倒装)at a time 每次；一次at on
5、e time 曾经；一度at the same time 同时at times 有时from time to time 有时；偶尔(3)take ones time 别着急；慢慢来kill time 消磨时间多角练透?单句语法填空The car came to a halt just in time to_prevent (prevent) an accident.All these gifts must be mailed immediately so as to be received in time for Christmas.?补全句子Many people are at the sa
6、me start, but seldom do they arrive at the ending point at_the_same_time.许多人起点相同，但他们很少同时到达终点。At no time did_they_actually_break_the_rules_of_the_game.It was unfair to punish them.他们实际并未违反比赛规则，惩罚他们是不公平的。3in ones turn轮到某人；接着in turn依次；轮流；反过来；相应地by turns 轮流；交替地take turns to do sth. 轮流做某事It is ones turn
7、to do sth. 轮到某人做某事It turns/turned out that . 结果多角练透?单句语法填空They had to take turns to_look (look) after the patients.Now that we have finished designing, the company, in its turn, should do the constructing work.I think its my turn to_drive (drive) the kids to school this week.?补全句子People try to avoid
8、 public transportation delays by using their own cars, and this in_turn_creates_more_problems.人们使用自己的小汽车避免公共交通延误，反过来，这将造成更多的问题。4cheer up感到高兴；感到振奋；(使)高兴；(使)振奋(1)cheer sb. up使某人振作起来cheer sb. on (比赛中)为某人喝彩；为某人加油(2)Cheers! 口语(用于祝酒)干杯！题点全练补全句子When Im feeling sad, my mother tells me funny stories to_cheer
9、_me_up.当我感到忧伤时，我的母亲就给我讲有趣的故事哄我高兴。They gathered round the swimming pool and cheered_her_on.他们聚集在游泳池边为她加油。This is just for you. Cheers!这是特意为你调制的。干杯！名师指津cheer up既可以用作及物动词短语，也可用作不及物动词短语。考点新组合阅读微技能Whether there is life on Mars is still _puzzle to us. The earth is six timesthe size of Mars. Whether we can
10、 land on Mars depends on the _ (develop) of science and technology. There is almost no oxygen on Mars and this makes it impossible for life toexist. If we are to go to Mars one day, we should have to take along our own oxygen, food, clothing and shelter.1.处应填_a_。2.处应填词的正确形式为development；处所在句为whether引
11、导的主语从句。5puzzle n谜；难题；(游戏的)猜谜vt.& vi.(使)迷惑；(使)为难(1)puzzle about/over冥思苦想；苦苦思索(2)a puzzle to sb. 一件让某人感到困惑的事情(3)puzzling adj. 令人迷惑的puzzled adj. 迷惑不解的；困惑的be puzzled about 对迷惑不解题点全练单句语法填空The police are still puzzling about/over how the accident could have happened.Where the missing plane has gone still
12、remains a puzzle to us.When the little girl was asked such a puzzling (puzzle) question, she stood there with a surprised look on her face.This morning, when I was walking on the street, I saw that two travelers were reading a map, looking puzzled (puzzle)名师指津过去分词形式的形容词，如puzzled, confused, frightene
13、d, excited, surprised等，除了可以用来描述人的心理活动以外，还可以用来修饰与人有关的一些名词，如look, voice, smile, expression, face等。6exist vi.存在；生存(1)exist in存在于之中exist on 靠为生There exists . 某地有；存在(2)existence n. 存在；生存come into existence 产生；成立；开始存在(3)existing adj. 现存的；现行的多角练透?单句语法填空No one knows when such a custom first came into existe
14、nce (exist)He finds it hard to exist on the money hes earning.There existed an obvious conflict between the accounts of the witnesses, so a judgment was not announced in court.?单句写作在我们学校，自行车的存放是一个长久以来就存在的问题。(2014北京高考写作)The parking place for bikes was_an_existing_problem_for_a_long_time in our school
15、.名师指津exist是不及物动词，没有被动语态，也不用于进行时态。7倍数表达法But when I tried to step forward, I found I was carried twice_as_far_as on the earth and fell over.但当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍远，因而我摔倒了。英语中常见的倍数表达法有：(1)Abe倍数asadj./adv.原级as B(2)Abe倍数adj./adv.比较级than B(3)Abe倍数the名词(size/weight .)of B(4)A倍数what从句My farm has expanded into a big one, which is three times as_big_as the previous on
