高中英语人教版 (新课标)必修3&4Unit 4 Astronomy: the science of the stars授课课件ppt

这是一份高中英语人教版 (新课标)必修3&4Unit 4 Astronomy: the science of the stars授课课件ppt，共14页。PPT课件主要包含了经典句式，形式主语等内容，欢迎下载使用。

1.make it +adj/n. + fr sb t d 【课本原句】This prduced a chain reactin, which made it pssible fr life t develp. 这就形成一个连锁反应，使生命发展成为可能。【用法解析】此句中的it 作形式宾语，真正的宾语是其后的不定式t develp,it做形式宾语还可以代替动名词或从句。e.g. (1) He made it clear that the meeting wuld be put ff. (2) He made it a rule t get up at six every mrning.
用法归纳(1)make+ it +adj./n. + that从句(2) make +it +adj./n. + t d sth (3) make +it + n gd/ n use /n value + ding sth 注意事项：常用语这种句型的动词还有：think, cnsider, find, feel 等
(1)She made it clear t me ___________ she wished t make a new life fr herself.(2)He makes it a rule _____________(keep) his rm neat and tidy.(3)He is stubbrn, which makes it n use __________ (quarrel) with him abut it.
2. What it was t becme was uncertain until between 4.5 and 3.8 billin years ag when the dust settled int a slid glbe. 随后它会变成什么没人能知道，直到38-45亿年前，这团尘埃才慢慢地形成一个固体的球状物。 分析：what引导一个 ，并且what在从句中作becme的 。(1) （使大家吃惊的是）is that he didn’t cme t the meeting. (2) __________________（他所做的）added t ur difficulty.
What made everyne surprised
What he had dne
3. It was nt immediately bvius that water was t be fundamental t the develpment f life.分析：it 作 ，真正的主语是 仿写 (1) 令人惊讶的是恐龙的消失仍然是个迷。 （2）难以置信地是他居然理解了这个理论。
It is unbelievable / incredible that he has understd this thery.
It is surprising/ amazing that the disappearance f dinsaurs /hw the dinsaur disappeared remains a mystery/puzzle.
water was t be fundamental t the develpment f life.
4.倍数表达法【课本原句】But when I tried t step frward, I fund I was carried twice as far as n the earth and fell ver.而当我试着向前迈步时，我发觉我被送出很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。e.g. 亚洲是欧洲的四倍大(比欧洲大三倍)。Asia is fur times as large as Eurpe.＝Asia is three times larger than Eurpe.＝The size f Asia is fur times that f Eurpe.＝Asia is fur times the size f Eurpe.
【用法归纳】倍数的表达方法：(1)“A＋倍数＋as＋形容词或副词的原级（+n.）＋as＋B”，表示“A是B的多少倍”。(2)“A＋倍数＋形容词或副词的比较级＋than＋B”，表示“A比B大(长、高、宽等)多少倍”。(3)“A＋倍数＋the size/height/length/width, etc.＋f＋B”，表示“A是B的多少倍”。
(1)There are _____________________________ in ur library as in yurs. 我们图书馆的书是你们图书馆里书的五倍。(2)据我所知，这个城市是那个城市的三倍大。（一句多译）①As far as I knw, the city is three times _________________________ that ne.②As far as I knw, the city is twice _____________________ that ne.③As far as I knw, the city is three times ____________________ that ne.
five times as many bks
as large as
larger than
I. 根据提示，完成句子。(1) Eating t much sugar is _________(harm) t ur teeth. (2) The ship rcked _________ (vilent) frm side t side, causing many passengers t feel seasick. (3) Scientists want t knw whether life __________ (exist) n ther planets. (4) Wuld yu please tell me hw t p_______________ this kind f thing ____________ happening?(5) He cked the meal ________________(轮到他) this week. (6) ___________ (不像) his brther, he ________ (不喜欢) playing ftball.
训练案Exercise
(7) Will yu cme back hme ______ _______ (及时）t see the children befre they g t bed? (8) Many mthers-t-be(准妈妈）will g____ ____ _______ babies this year.(9) As far as I am cncerned, there are fur___________ (fundament) factrs fr success.(10) What he said was quite ________ _________ _______ ________ ________ (与他做的不一样).
II.选词填空1.Mr Brwn had intended t catch the early train, but he didn't get up _____________.2. D remember t _______________ cars while crssing the street.3. At last, the firefighters put ut the fire in the supermarket, which ____________ at ten this mrning.4. When the prfessr turned up, all the students ___________________.5. Class Three shuld be respnsible fr raising the red flag this week _______________.6. ______________ yu have grwn up, yu shuld nt rely n yur parents.
cheer up, nw that, break ut, in time, in ne's turn, watch ut fr
III.完成句子(一空一词)1.A fire __________ ________ in the neighbrhd last night.昨晚居民区里发生了火灾。2.N matter where he is, he makes ______ a rule ______ ______ fr a walk befre breakfast.无论他在哪里，他都让早饭前散步成为了习惯。3.The hall is _________ _______ _______ than ur classrm.这个大厅比我们教室大五倍。
II.完成句子(一空一词)4.His arrival ____________ ur plans ________ ________ carried ut.他的到来阻止了我们计划的实施。5.It was such a frightening snake that n ne dared ________ ______ _____ it. 这条蛇是如此吓人以致于无人敢接近它。6.We are sure that Jseph will finish the wrk ______ _______.我们确信约瑟夫会及时完成这项工作。