人教版高一英语必修三Unit-4全套课件

1、2021/3/271Lead-inLead-inThe background picture is the whole cosmoskzms/universe (宇宙宇宙).What do you know about it?2021/3/272Its the Galaxy(银河系银河系).2021/3/273Theyre planets(行星行星) and stars(恒星恒星).2021/3/274Its the black hole.2021/3/275Its the solar system. Can you enumeratenju:mret(列举列举) the planets?,2

2、021/3/276History of the Universe2021/3/277Unit 4Unit 42021/3/278Physics Physics ChemistryChemistryBiologyBiologyGeology Geology MathematicsMathematicsMedicineMedicineBiochemistryBiochemistryGeophysicsGeophysicsAstronomyAstronomyWarming upWarming up2021/3/279Hawking and his theories2021/3/2710Can you

3、 name them in English?2021/3/2711Mercurym:kjriVenusvinsEarthMarsJupiterdu:pt(r)Saturnst:nUranusjrnsNeptuneneptju:nPlutoplu:tuThe SunThe Solar System2021/3/2712A Black Hole2021/3/2713The Moon2021/3/2714The Big Bang2021/3/2715Atom2021/3/2716The Globe Our Earth2021/3/2717Atmosphere (大气层大气层)2021/3/2718R

4、eading Reading 1. Fast Reading, and analyze its structure. Write down the main idea for each paragraph.2021/3/2719Answer key for question 1:Paragraph 1: A widely accepted theory about the formation of the universe.Paragraph 2: The formation of water for life.Paragraph 3: The importance of water for

5、life.Paragraph 4: The development of plants and animals on the earth.Paragraph 5: The arrival of humans and their impact on the earth.2021/3/27203. Detailed Reading: Read the text loudly for a second time and then complete the fills in the following pictures according to the evolution(进化进化,演变演变) ord

6、er of life on the earth.123456782021/3/2721Answer key for question 3:1) small plants in water2) shellfish and all sorts of fish3) green plants on land4) insects (on land)5) amphibians (on land and in water)6) forests7) reptiles (on land)8) dinosaurs (on land)9) mammals (on land)2021/3/2722天文学天文学 n.

7、n. Astronomy is the scientific study of the stars, planets, and other natural objects in space.1. astronomy1. astronomy相关短语相关短语radar astronomy 雷达天文学雷达天文学 radio astronomy 电波电波( (无线电无线电) )天文学天文学 2021/3/27232. star2. star(1)名词名词 (pl. stars)1）星星, ,恒星恒星;(;(日、月等日、月等) )天体天体; ;星形物星形物; ; 2）星号星号;(;(表示等级等的表示等级

8、等的) )星级星级; ;星形勋章星形勋章, 如如: While in Taipei she stayed at a four star hotel. 她在台北逗留期间住在一家四星级旅馆。她在台北逗留期间住在一家四星级旅馆。 3）命运命运; ;星象星象 4）( (电影、体育等的电影、体育等的) )明星明星, ,杰出人物杰出人物 His wish to become a football star has come true. 他想当足球明星的愿望实现了。他想当足球明星的愿望实现了。 2021/3/2724(2)动词（及物）动词（及物） ( starred; starred; starring)1

9、）用星形物装饰用星形物装饰 2）用星号标出用星号标出 3）使成明星使成明星, ,由由.主演主演 Yesterday we saw a film starring Charlie Chaplin. 昨天我们看了一部查理昨天我们看了一部查理卓别林主演的电影。卓别林主演的电影。 3. 动词（不及物）动词（不及物） ( starred; starred; starring)1）当明星当明星, ,主演主演。如。如:She has starred in some thirty films. 她主演过大约她主演过大约30部影片。部影片。 star star2021/3/27252）表现出色表现出色 。如。如

10、:He didnt star at that job. 那份工作他干得并不出色。那份工作他干得并不出色。 (4) 形容词形容词 1）星的星的; ;星形的星形的 2）明星的明星的, ,主角的主角的 3）出色的出色的, ,优秀的。优秀的。如如:Tony is the star player on our team. 托尼是我队的主力。托尼是我队的主力。 star star2021/3/27263. globe3. globe（1） 名词名词 (pl. globes)1) 球球; ;球状物球状物 2) 地球仪地球仪; ;地球地球。如。如:This plant can grow in many par

11、ts of the globe. 这这种植物能在地球上的许多地方生长。种植物能在地球上的许多地方生长。 3) 眼球眼球 （2） 动词（不及物）动词（不及物） ( globed; globed; globing) 成球状成球状 （3） 动词（及物）动词（及物） ( globed; globed; globing) 使成球状使成球状 2021/3/2727 Then are you clear now about the evolution of life?2021/3/2728When the dust settled into a solid globe, the earth was so v

12、iolent.2021/3/27294.6 billion years ago3 billion years ago540 million years ago250 million years ago65million years agoThe Evolution of Life on the earthi:vlu:nplzkmeszksi:nzuik2021/3/27302021/3/2731Shellfish2021/3/2732Amphibian2021/3/2733Reptile Dinosaur2021/3/27342021/3/2735Primitive(原始的原始的) Peopl

13、e2021/3/27361 1. What it was to become . What it was to become was was uncertainuncertain ( (when the dust when the dust settled into a solid globesettled into a solid globe) ). .be to dobe to do的用法的用法(1)be to do.用于第一人称疑问句中用于第一人称疑问句中,表示征求对方意见。表示征求对方意见。如如:Am I to go on with the work?要我继续这项工作吗要我继续这项工作

14、吗?What are we to do next？我们下一步该怎么办？我们下一步该怎么办？ (2)表示按约定、计划表示按约定、计划,或即将发生的动作或即将发生的动作,这是将来时的一这是将来时的一种用法。如种用法。如:They are to pay a visit to the teacher together at 10 am. tomorrow.他们约定明天上午他们约定明天上午10点一起去看这位老师。点一起去看这位老师。bebe2021/3/2737We are to meet at the station at four this afternoon. 我们今天下午我们今天下午4点在车站见

15、面。点在车站见面。 (3)表示必须或应该表示必须或应该,在意义上等于在意义上等于must,should,ought to 或或have to。如如:You are to finish the work before five this afternoon.你们必须在今天下午五点以前完成这项任务。你们必须在今天下午五点以前完成这项任务。This medicine is to be taken three times a day. 这种药一天要服三次。这种药一天要服三次。 (4)用来表示注定要发生或不可避免要发生的事。用来表示注定要发生或不可避免要发生的事。如如:His theory was to

16、 change the views on the universe. 2021/3/27381. It 1. It explodedexploded loudly with fire and rock, loudly with fire and rock, which were which were in timein time to produce carbon, to produce carbon, nitrogen, water vapour and other gases, nitrogen, water vapour and other gases, which were to ma

17、ke the earths which were to make the earths atmosphere.atmosphere.loud, aloud, loudly 这三个副词词义很接近这三个副词词义很接近,但含义有所不同。但含义有所不同。 aloud 的意思是的意思是“出声地、高声地出声地、高声地”,强调能让人强调能让人听得见。如听得见。如: Read aloud so that we can all hear you. 读大点读大点声声,以便我们大家都能听见你。以便我们大家都能听见你。 They are shouting aloud. 他们在大声感叫。他们在大声感叫。 2021/3/

18、2739loud 意思是意思是“大声地、高声地、响亮地大声地、高声地、响亮地”,强调声音响亮。强调声音响亮。常与动词常与动词speak, talk, say, laugh等连用。等连用。如如: Dont talk so loud. 讲话声音不要这么大。讲话声音不要这么大。 Facts speak louder than words. 事实胜于雄辩。事实胜于雄辩。loudly 的意思是的意思是“高声地高声地”,有时可与有时可与loud通用通用,但含有但含有“喧闹喧闹”的意味。的意味。如如: Someone knocked loudly at the door. 有人在大声敲门。有人在大声敲门。

19、Dont talk so loudly/loud. 说话声音不要这么大。说话声音不要这么大。 在现代英语中有时在并不喧闹的场合也用在现代英语中有时在并不喧闹的场合也用loudly. 如如: Will you please read the text loudly? 你能不能大声读你能不能大声读这篇课文这篇课文? 2021/3/2740explodeexplode1)1)（使某物）炸开（使某物）炸开, ,爆炸爆炸。如如: :The firework explodedexploded in his hand and he was hurt seriously. 2021/3/27412)2)（指感

20、情）激发（指感情）激发。如如: : I was frightened when she exploded exploded into loud laughter. 3)3)（指人口）突然或迅速增加（指人口）突然或迅速增加。如如: :Now it is not easy to find jobs with the exploding exploding population. explosion n.n. 爆炸（声）爆炸（声） explosive adj.adj. 爆炸性的爆炸性的, ,易爆炸的易爆炸的 n.n. 炸药炸药, ,爆爆炸物炸物in timein time (for sth(for

21、sth. ./to do sth/to do sth. .):): 最终最终; ;及时及时, ,如如She will be back in timein time to prepare dinner. 她会及时赶回来准备晚饭。她会及时赶回来准备晚饭。2021/3/27423. What many science believe is 3. What many science believe is that the continued presence of that the continued presence of water water allowedallowed the earth t

22、o the earth to dissolve gases and acids which dissolve gases and acids which are harmful toare harmful to the plants into the the plants into the oceans and seas.oceans and seas.allow v. 允许、许可、容许允许、许可、容许allow + n ./ pron. / doing allow sb. to do sth. be allowed to do sth.2021/3/27432.2.continuous 连续

23、不断的（强调一个动作没有间连续不断的（强调一个动作没有间断过）断过）continual 反复的反复的,频繁的（强调一个动作在频繁的（强调一个动作在某个时期反复出现）某个时期反复出现）continued和和continuing可以互换可以互换,都表示都表示“连续不断的连续不断的”“”“继续不变的继续不变的”,但是它们只能用但是它们只能用于名词前。于名词前。总的来说，其差异正逐渐消失，特别是总的来说，其差异正逐渐消失，特别是continual亦含有亦含有continuous相同的意义，尤指不相同的意义，尤指不愉快的事愉快的事:Life was a continual struggle for th

24、em. 生活对他们来说是不断的挣扎。生活对他们来说是不断的挣扎。 2021/3/2744Present1 presence n.出席出席,到场到场,存在存在形容词形容词 a. 1.出席的出席的,在场的在场的How many people were present at the meeting? 到会的有多少人到会的有多少人? 2.现在的现在的,当前的当前的Im not at all satisfied with the present situation. 我对目前的情况一点都不满意。我对目前的情况一点都不满意。 2021/3/2745名词名词 n. 1.现在现在,目前目前There is n

25、o time like the present. 机不可失机不可失,时不再来。时不再来。 present2名词名词 n. 1.礼物礼物,赠品赠品CHe often gave his neighbors kids little presents. 他常常送些小礼物给邻居的孩子。他常常送些小礼物给邻居的孩子。 2021/3/2746Present3 presentation n.授予授予,颁发颁发,呈现呈现及物动词及物动词 vt. 1.赠送赠送,呈献呈献(+to/with)They presented him with a bunch of flowers. 他们献给他一束鲜花。他们献给他一束鲜花

26、。 2.引起引起(问题问题),造成造成(困难困难)(+to/with)All this presented new safety problems. 所有这些都造成了新的安全问题。所有这些都造成了新的安全问题。 2021/3/27473.提出提出,提交提交,呈递呈递(+to)Some 300 papers were presented at the conference. 会上提出了大约三百篇论文。会上提出了大约三百篇论文。 4.呈现呈现;描述描述;出示出示(+to)He had to present a smiling face though heavy-hearted. 虽然忧心忡忡虽然忧

27、心忡忡,但他还得露出一副笑容。但他还得露出一副笑容。 2021/3/2748My father doesnt allow smoking at home. In fact he doesnt allow us to smoke anywhere at any time. 父亲不允许在家里吸烟。实际上父亲不允许在家里吸烟。实际上,他不允许他不允许我们在任何地方任何时候吸烟。我们在任何地方任何时候吸烟。Are we allowed to use the computer?我们可以用电脑么我们可以用电脑么?be harmful to 对对有害有害 do harm to sb. = do sb. ha

28、rm 伤害某人伤害某人,对某人对某人有害处有害处 1) Pollution is especially harmful to animals. 2) Smoking will do you a lot of harm. 2021/3/27494. They produced young 4. They produced young generally generally by laying by laying eggs.eggs.Its generally believed that一般认为一般认为generally speaking 一般而言一般而言,概括来说概括来说 1) Its gene

29、rally believed that girls work harder than boys do. 2) Generally speaking, women cry more easily than men. by doing用于说明做某事的手段、方式。用于说明做某事的手段、方式。如如:I dont think she can help him by just giving him money. 我认为她光靠给钱是帮不了他的。我认为她光靠给钱是帮不了他的。2021/3/27505. They are putting too much 5. They are putting too much

30、 carbon dioxide into the carbon dioxide into the atmosphere, which atmosphere, which preventsprevents heat heat from escapingfrom escaping from the earth into from the earth into space. space. 阻止某人做某事阻止某人做某事 : :prevent sb. (from) doing sth. stop sb. (from) doing sth. keep sb. from doing sth. 1) We m

31、ust prevent them from making trouble. 2) You should prevent the child from injuring himself. If nothing prevents, 如果没有什么阻碍的话如果没有什么阻碍的话 , , 2021/3/27516. Whether life will continue on the 6. Whether life will continue on the earth for millions of years to come earth for millions of years to come will

32、 will depend ondepend on whether this whether this problem can be solved. problem can be solved. depend on : 相信相信, ,信赖信赖, , 依靠依靠, ,依赖依赖, , 视视而定而定, ,取决于取决于 Depend on it. 没问题没问题,请放心（句末或句首）请放心（句末或句首） That /It (all) depends. 那得看情况而定那得看情况而定. . 1) Depend on it, youll succeed. 2) He may support me, but it

33、depends . 2021/3/2752宾语从句可以分为三类(1).动词的宾语从句1.1大多数位于动词后面Eg:Ihopeyoucanjoinusinthegame.1.2有些是“动词+副词”后Findout/pointout/figureout/turnout/figureoutEg:Canyoufigureoutwhatthepoetreallymeansinthispoem?1.3有些动词短语后面Makesure/makeuponesmind/keepinmindEg;weshouldkeepinmindthatsportscanbeagreatboosttoourhealth.202

34、1/3/2753(2)it作形式宾语代替宾语从句第一类动词;find/feel/think/consider/make/believe/guess/suppose/assume等后面有宾语不足语时,需要用it作形式宾语而将that引导的真正的宾语从句后置。Eg:Ithinkitnecessarythatwedosomesporting.第二类动词带宾语从句时需要在从句前面加it。这类词:hate/like/dislike/appreciate/dependon/seeto/Eg:Ihateitwhentheytalkwithoutconsideringothersfeeling.2021/3/

35、27547. I 7. I cheered upcheered up immediately and immediately and floated weightlessly around in our floated weightlessly around in our spaceship cabin spaceship cabin watchingwatching the the earth earth become become smaller and the smaller and the moon larger.moon larger.cheer up 欢呼欢呼;喝彩喝彩;感到高兴感

36、到高兴;使高兴。使高兴。如如:The crowd cheered up when they saw the teams arrive. 观众看到运动队进场时欢声雷动。观众看到运动队进场时欢声雷动。He took her to the concert to cheer her up. 为使她高兴起来为使她高兴起来,他带她去听音乐会。他带她去听音乐会。Astronomerstrnm(r)astronautstrn:t2021/3/2755watch do /doing 观看观看;注视。注视。 如如:We watched the sun setting behind the trees. Eveni

37、ng fell. 我们看着太阳一点点地落我们看着太阳一点点地落在树后在树后,夜幕降临了。夜幕降临了。Every day as they watched the plant grow, their hearts were filled with hope. 他们每天他们每天都在观察这棵植物生长都在观察这棵植物生长,心里充满了希望。心里充满了希望。Weigh1.表示“称的重量”,是及物动词,如:Heweighedthefish.他称了这条鱼.Doyouoftenweighyourself?你经常称体重吗?2.表示“重(多少)”,是不及物动词Heweighs60kilos.他体重60公斤.Theme

38、atweighsfivepounds.这肉重五磅.2021/3/27562.比较byweight/inweight:前者表示“按重量”,后者表示“重量上”.如:Dotheychargecarriagebyweight?他们是按重量收取运费吗?Itssmallerinsizebutgreaterinweight.它体积比较小,但分量比较重.3.对重量提问,特殊疑问词用Howmuch?orHowheavy?Whatistheweightof.Howmuchitweighs?What=howmuchdoyouweigh?Whatistheweightofthebaby?2021/3/2757倍数的表

39、达方式共:四种1.表示“几倍大小（长短;数量）”,由“倍数+thesize（length,amount）”结构组成.例如:Theearthisforth-ninetimesthesizeofthemoon.地球是月亮的49倍大.2.表示“比大几倍”,由“倍数+形容词（副词）比较级”结构组成.例如:Thisboxisthreetimesbiggerthanthatone.这个盒子比那个盒子大三倍.Thegrainoutputis8percenthigherthisyearthanthatoflastyear.今年比去年粮食产量增加8%.2021/3/27583.表示“是倍”,由“倍数+as+形容

40、词+as+”结构组成.例如:Ourfactoryistwiceasbigastheirs.我们的工厂是他们的三倍.Ihavethreetimesasmanyasyou.我有你三倍那么多.注一倍用once,两倍用twice.4、还可以用by+倍数,表示增加多少倍.Theproductionofgrainhasbeenincreasedbyfourtimesthisyear.今年粮食产量增加了4倍.2021/3/27599. We watched, 9. We watched, amazed amazed as as fire fire broke outbroke out on the outs

41、ide of the on the outside of the spaceship as the earths gravity spaceship as the earths gravity increased.increased. 此处的此处的amazed是过去分词作状语。过去是过去分词作状语。过去分词经常可以作状语分词经常可以作状语,这是一种特定用法。这是一种特定用法。如如:He came in unnoticed. 他神不知鬼不觉地走了进来。他神不知鬼不觉地走了进来。Many heroes lie buried in the churchyard.许多英雄埋葬在教堂的墓地里。许多英雄埋

42、葬在教堂的墓地里。 break out （战争（战争,争吵争吵,疾病等）爆发。疾病等）爆发。如如:A quarrel broke out suddenly at midnight. 半夜，（他们）突然大吵起来。半夜，（他们）突然大吵起来。2021/3/27608. “Oh dear,” I cried, “walking 8. “Oh dear,” I cried, “walking does need a bit of practice does need a bit of practice now now thatthat gravity has changed.” gravity has

43、 changed.”Now that : 既然既然,由于由于。如如:Now that everybody is here, we can begin the meeting.2021/3/276110. the Paleozoic era: 10. the Paleozoic era: 古生代古生代, ,是地质时是地质时代的第三个代（第一、第二代分别是太古代代的第三个代（第一、第二代分别是太古代和元古代）。约和元古代）。约5.445.44亿年前至亿年前至2.482.48亿年前亿年前. . the Mesozoic era: the Mesozoic era: 中生代中生代, ,包括包括: :三

44、三叠纪、侏罗纪、白垩纪。叠纪、侏罗纪、白垩纪。 the Cenozoic era: the Cenozoic era: 新生代新生代, ,约开始于约开始于65006500万年前，现仍在持续。万年前，现仍在持续。11. Big Bang: 11. Big Bang: 宇宙大爆炸理论宇宙大爆炸理论2021/3/2762Learning about Language Learning about Language 1. Words 1. Words astronomy, atmosphere, system, violent, solid, explode, carbon, dioxide, oxy

45、gen, surface, planet, harmful, development, spread, method, depend, exist, presence, telescope, disappoint, disappointed, publish, publishing, gravity, force, gradually, cheer, float, mass2021/3/2763Use the correct prefix or suffix for each word. Write out the new word and explain the difference bet

46、ween the two.presentviolentconfidentdifferentpatientpresenceviolenceconfidencedifferencepatiencecertainfairpaidlikekinduncertainunfairunpaidunlikeunkind-(en)ceun-2021/3/2764cultureglobeuniverseagriculturemathematicsculturalglobaluniversalagricultralmathematicalartphysicschemistrybiologyscienceartist

47、phsicistchemistbiologistscientist-al-ist2021/3/27652. Expressions2. Expressionssolar system, in time, now that, prevent.from, depend on, cheer up, get the hang of, break out, lay eggs, give birth to, in ones turn, carbon dioxide, watch out, block out2021/3/2766 surface, explode, develop, prevent, fl

48、oat, spread, violent, astronomy, force, publish, disappoint, solid 1. The _ of gravity makes things fall to the earth.2. The robbers kicked the door _ and broke into the stars house.3. Nothing can separate the two, because they have a _ friendship foundation.4. In World War II, two atomic bombs _ in

49、 Japan, killing a large number of people.5. With the _ of our countrys economy, peoples living standard has been greatly raised.forceviolentlysolidexplodeddevelopment2021/3/27676. More than 70% of the earths _ is covered by water.7. In the last few years the city has _ out rapidly in all directions.

50、8. That he failed the examination _ his lover very much.9. They _ the canoe out into the middle of the river.10. Mark Twain _ a lot of popular novels in that _ firm.spreaddisappointedfloatedsurfacepublishedpublishing2021/3/27681.他以前是靠画画为生的。他以前是靠画画为生的。 He used to _his living _.2.爆竹在他手里爆炸了爆竹在他手里爆炸了,他伤

51、得很严重。他伤得很严重。The firework _ and he hurt seriously.3.乡村生活与都市生活是非常不同的。乡村生活与都市生活是非常不同的。Country life is_ city life.4.玛丽之所以没有通过这次考试玛丽之所以没有通过这次考试,是因为她此前病是因为她此前病了两个星期。了两个星期。 Mary _ in the exam, _she had been ill for two weeks.2021/3/27695. 第二次世界大战是年爆发的。第二次世界大战是年爆发的。 World War II _in 1939.6.我担心是否伤害了她。我担心是否伤害

52、了她。 I worry _ I hurt her feelings.7.为使她高兴起来为使她高兴起来,她丈夫带她去听音乐会。她丈夫带她去听音乐会。Her husband took her to the concert _.8.他们乘坐宇宙飞船穿越太空到月球上去。他们乘坐宇宙飞船穿越太空到月球上去。 They _ to the moon in a spaceship.9.天上有朵朵白云。天上有朵朵白云。 There were _ white clouds in the sky.2021/3/27701. He used to make/earn his living by painting.2.

53、 The firework exploded in his hand and he hurt seriously.3. Country life is quite different from city life.4. Mary failed in the exam. This was because she had been ill for two weeks.5. World War II broke out in 1939.6. I worry about whether I hurt her feelings.7. Her husband took her to the concert

54、 to cheer her up.8. They traveled through space to the moon in a spaceship.9. There were masses of white clouds in the sky.Answer Key:2021/3/27713. Grammar3. GrammarNoun Clauses as the subject 做主语用的名词性从句做主语用的名词性从句,因其在复合句中做主因其在复合句中做主语语,又称又称主语从句主语从句(Noun Clauses as the subject) ,引导主语从句的有从属连词引导主语从句的有从属

55、连词that、whether，连接，连接代词代词who、what、which，连接副词，连接副词when、where、how、why等等。1. 连接词连接词:1）从属连词）从属连词:that， whether等等. that 引导主语从句只起引导作用，本身无实际引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。意义，在主语从句中不充当任何成分，但不能省略。That she left him cut him to the heart.That he will come is certain.2021/3/2772 由由whether及其他连词引导的主语从句放在句及

56、其他连词引导的主语从句放在句首首,句后都可。句后都可。 Whether it will please them is not easy to say.It doesnt matter too much whether shes coming or not.2)连接代词连接代词who ,what ,which, whatever, whichever, whoever What seems easy to some people seems difficult to others.Which side will win is not clear.3)连接副词连接副词when，where， how

57、， why等。等。Why he did it remains a mystery.When they will start is not known yet.How he became a great scientist is known to us all.2021/3/27732. 位置位置:主语从句可以前置主语从句可以前置,也可以后置。用也可以后置。用it做形做形式主语式主语,而把主语从句放在句末而把主语从句放在句末,常用下面几种句型。常用下面几种句型。 1）It + be + 表语表语 +主语从句主语从句表语表语:（名词，（名词， 形容词，过去分词）形容词，过去分词）It is a p

58、ity that we cant go.It is no surprise that our team should have won the game.It is an honour that I was invited to attend the meeting.It is certain that she will do well in her exam.It is true that I told her everything.It is said that Mr. Green has arrived in Beijing.It is reported that China has s

59、ent another manmade earth satellite into orbit.2021/3/2774 2）It+不及物动词或短语不及物动词或短语+主语从句主语从句It seemed (happened, doesnt matter, has turned out) that It happens that they were absent.It seems that Alice is not coming to the party at all.It doesnt matter whether she will come or not.It makes no differenc

60、e where we shall have the meeting. 3） It+及物动词（被动语态）及物动词（被动语态）+主语从句主语从句It has been decided that the exhibition will not open on Sundays.注意注意: 主语从句在句首时主语从句在句首时,必须由连接词引导必须由连接词引导,不能省不能省略这些连接词略这些连接词;但是如果用但是如果用it做形式主语做形式主语,而把而把2021/3/2775主语从句放在句末时主语从句放在句末时,从属连词从属连词that可以省略。可以省略。误误:They should like each ot