《人教版新课标英语选修7unit3复习课件》由会员分享，可在线阅读，更多相关《人教版新课标英语选修7unit3复习课件（64页珍藏版）》请在金锄头文库上搜索。
1、Unit 3 Under the sea Language Data Bank 1. I thought , 1. I thought , at the timeat the time, that this was just a story but , that this was just a story but then I then I witnessedwitnessed it with my own eyes many times. it with my own eyes many times. 1)at the time “1)at the time “那时候那时候那时候那时候” ”
2、，位置应在，位置应在，位置应在，位置应在storystory之后，作时之后，作时之后，作时之后，作时 间状语，间状语，间状语，间状语， 提前是为了强调，提前是为了强调，提前是为了强调，提前是为了强调，that this was just a storythat this was just a story作作作作 thoughtthought的宾语。的宾语。的宾语。的宾语。 2) 2) 此处此处此处此处witnesswitness用作动词，意思是用作动词，意思是用作动词，意思是用作动词，意思是“ “亲眼看到亲眼看到亲眼看到亲眼看到” ”，如，如，如，如: : 你亲眼看到那场事故了吗？你亲眼看到那
3、场事故了吗？你亲眼看到那场事故了吗？你亲眼看到那场事故了吗？ Did you _ the accident?Did you _ the accident? a) witness a) witness 还可表示还可表示还可表示还可表示“ “作证作证作证作证” ”、“ “证明证明证明证明” ”，常用，常用，常用，常用“ “witness to sth/doing sthwitness to sth/doing sth” ”例如：例如：例如：例如：witness他作证说他看到那个人进入大楼的他作证说他看到那个人进入大楼的.He _ to having seen the man enter the b
4、uilding.b）witness 还可以还可以用作名词，表示用作名词，表示“目击者目击者”、“证人证人”，如：如：她被传唤作被告证人。她被传唤作被告证人。She was called as a _ _ .defense witnesswitnessed2. I was sortingoutmyaccommodation.sort out 表示表示“分类分类”，“整理整理”，Im just sorting out the papers that can be thrown away. 我正在整理可以扔掉的文件。我正在整理可以扔掉的文件。to sort out ones accommodatio
5、n整理的住整理的住宿宿sort out 还表示还表示“解决（问题或困难）解决（问题或困难）”，例如：，例如：Weve got a few little problems to sort out. 我们有几个小问题要解决。我们有几个小问题要解决。1) rooms, esp, for living in 房间，住所房间，住所2) lodgings, rooms and food 膳宿（在英英中为膳宿（在英英中为不可数不可数，在美英中为，在美英中为可数，常用复数可数，常用复数）accommodate v. accommodating adj. accommodator n. accommodatio
6、n适应，调节适应，调节亲切的，易打交道的亲切的，易打交道的调节者调节者3. We ran down to the shore in time to see an enormous animal opposite us throwing itself out of the water and then crashing down again. 我们及时赶到岸边，看到对面有一个庞大的动我们及时赶到岸边，看到对面有一个庞大的动物猛力跃出水面，然后又坠落到水里。物猛力跃出水面，然后又坠落到水里。opposite是介词是介词, 在。对面。在。对面。如：如：He sat opposite to Mario
7、n during the discussion. 讨论的时候，他坐在玛丽安对面。讨论的时候，他坐在玛丽安对面。opposite 也可以作形容词，表示也可以作形容词，表示“相对的；相反的相对的；相反的”。on the opposite side of the street 在街的对面在街的对面throw itself out of the water 想象地表现了鲸想象地表现了鲸跃出水面的动作。跃出水面的动作。throw 的用法比较灵活，能的用法比较灵活，能表达出丰富的含义。如：表达出丰富的含义。如：He throws his weight about. 他乱用权利。他乱用权利。I felt d
8、iscouraged when he threw cold water on my idea. 他给我的想法泼冷水时，他给我的想法泼冷水时，我感到很沮丧。我感到很沮丧。She threw herself into a chair and began to cry. 她倒在椅子上，哭了起来。她倒在椅子上，哭了起来。4. yell vi. 大叫；呼喊大叫；呼喊Dont yell at me! 别对我大喊大叫！别对我大喊大叫！She let out a yell and ran home.她尖叫了一声跑回了家。她尖叫了一声跑回了家。yell n. 叫声；喊声叫声；喊声Frank let out a
9、yell and jumped away.弗兰克大叫一声跳开了。弗兰克大叫一声跳开了。5. This was the call that announced there was about to be a whale hunt. 这是宣告捕这是宣告捕鲸行动马上就要开始的呼声。鲸行动马上就要开始的呼声。be about to do 即将；将要。即将；将要。如：如：When we were about to close down the business, the bank came to our rescue. 我们就要停业时，银行为我们救了急。我们就要停业时，银行为我们救了急。Another
10、journey of challenge and danger was about to begin. 又一段充满危险和挑又一段充满危险和挑战的旅程就要开始了。战的旅程就要开始了。6. “Come on, Clancy. To the boat”, George said as he ran ahead of me.1) 表示劝说，不耐烦，催促表示劝说，不耐烦，催促 Come on, well be late for concert.2) 开始开始 The rain has just come e oncome about 发生发生come across 偶然遇见偶然遇见come forth
11、出来，涌现出来，涌现come out 出版，（花）开出版，（花）开come through （电话）接通（电话）接通come up 走近，上升走近，上升come to 总计总计come up with 赶上，补充赶上，补充与与come相关的短语：相关的短语：7. ahead of 1) 在在前面前面 2) 比比强强(好好)” A man _to see if the road was clear .他的语文比我强他的语文比我强.He is_. ahead of time “提前提前” We finish the task_.went ahead of the othersahead of me
12、 in Chineseahead of time8. I looked down into the water and could see Old Tom swimming by the boat, showing us the way. 我低头朝水中看去，看到老汤姆正在船边游着，我低头朝水中看去，看到老汤姆正在船边游着，为我们引路。为我们引路。swimming by the boat是现在分词短语作是现在分词短语作宾语补宾语补足语。足语。 9. Without pausing we jumped into the boat with the other whalers and headed
13、out into the bay. 一颗不停地，我们和其他的一颗不停地，我们和其他的捕鲸人都跳上船，朝海湾开去。捕鲸人都跳上船，朝海湾开去。head 为动词，表示为动词，表示“朝。方向移动朝。方向移动”，例如：，例如：We headed the boat out to sea. 我们将船驶向外海。我们将船驶向外海。head 还可以表示还可以表示“带领带领”，例如：例如：Who is heading the party？该党现在由谁领导？该党现在由谁领导？ 10. A few minutes later, there was no Tom, so George started beating t
14、he water with his oar and there was Tom, circling back to the boat, leading us to the hunt again. 几分钟后，汤姆不见了，于是乔治开始几分钟后，汤姆不见了，于是乔治开始用浆拍打水面。汤姆出现了，转回到船用浆拍打水面。汤姆出现了，转回到船边，又领我们前往捕猎处。边，又领我们前往捕猎处。 circling back to the boat; leading us to the hunt again是现在分词短语作状语。是现在分词短语作状语。11. there was Tom, circling back
15、 to the boat, leading us to the hunt again. 。 汤姆出现了，转回到船边，又领着我们前往捕汤姆出现了，转回到船边，又领着我们前往捕鲸处。鲸处。lead 表示表示“作导向作导向”，例如：，例如：All roads lead to Rome. 殊途同归。殊途同归。Your explanation has led me to a clear understanding. 你的解释让我理解清楚了。你的解释让我理解清楚了。lead sb to do 表示表示“使使干干”，例如，例如:What led you to believe it? 什么使你相信它？什么使你
16、相信它？12. Well, its teamwork-the killers over there are throwing themselves on top of the whales blow-hole to stop it breathing. 啊，它们在协同作战呢啊，它们在协同作战呢那些虎鲸正往鲸的出那些虎鲸正往鲸的出气孔上扑去，不让它呼吸。气孔上扑去，不让它呼吸。The success of this performance is largely the result of good teamwork. 这次演出的成这次演出的成功很大程度上是大家通力合作的结果。功很大程度上是大家通
17、力合作的结果。teamwork 协作；配合。协作；配合。to stop it breathing 是动词不定式短语作目的是动词不定式短语作目的状语。如：状语。如：They went there to help get in the autumn crops. 它们去那里是为了帮助秋收。它们去那里是为了帮助秋收。Lets do some exercise to warm up a bit. 咱咱们做些锻炼热热身。们做些锻炼热热身。stop(from) doing 句型的意思是句型的意思是“防止（制止防止（制止）某人做某事）某人做某事”。如：。如：I am leaving, so dont try
18、 to stop me from going. 我要走了，别想阻拦我。我要走了，别想阻拦我。We must stop her telling others about it. 我我们要制止她把此事告诉别人。们要制止她把此事告诉别人。13. flee fled fled 逃跑逃跑,逃避逃避,逃离逃离 1) vt. flee sw They were forced to flee the country. 2) vi. flee from sw The prisoner attempted to flee from the prison , but he failed . 恐慌的人们从火里逃出恐慌
19、的人们从火里逃出. The alarmed people fled from the fire . 14. He let it go and the harpoon hit the spot. Being badly wounded, the whale soon died. 辨析：辨析：wound, injury, hurt, harm与与damage wound 是战斗中刀枪的创伤、伤口是战斗中刀枪的创伤、伤口;injury 是平时的大小创伤和伤害是平时的大小创伤和伤害hurt 是指精神上的伤害和肉体的伤痛。是指精神上的伤害和肉体的伤痛。harm 指使有生命或者无生命的东西不再完整、指使有
20、生命或者无生命的东西不再完整、美丽，美丽， 或者具有原来的价值。或者具有原来的价值。damage “车辆、船只、房屋车辆、船只、房屋”等的损坏。等的损坏。Use the above words to fill the following blanks:Use the above words to fill the following blanks:1. His brother was _ in that battle . 1. His brother was _ in that battle . 2.He got serious2.He got serious _ to the legs at
21、 work ._ to the legs at work .3. He got his finger _ .3. He got his finger _ .4. The4. The _ to his feelings is more serious than the _ to his feelings is more serious than the hurt in his body .hurt in his body .5. Smoking a lot of cigarettes can _ and even 5. Smoking a lot of cigarettes can _ and
22、even kill over a long period of time .kill over a long period of time .6. The bus was badly _6. The bus was badly _ when itwhen it hit the wall . This storm did great _ to the crops .injuriesinjuredhurtharmdamagedharm/damagewounded damage “车辆、船只、房屋车辆、船只、房屋”等的损坏。等的损坏。 The bus was badly damaged when i
23、t hit the wall . This storm did great harm / damage to the crops .15.its body was dragged swiftly by the killers down into the depths of the sea.它的尸体被虎鲸迅速拖向大海深处。它的尸体被虎鲸迅速拖向大海深处。1）drag的意思是的意思是“拖拖”，例如：，例如：He dragged the table into the corner.他把那张坐姿拖到角落。他把那张坐姿拖到角落。drag 短语联想：短语联想：drag down 把人拖垮把人拖垮drag
24、ones feet 故意拖延故意拖延drag in 拉进去拉进去drag on 拖延，拉长拖延，拉长2）depths表示表示“底层底层”，“深处深处”，例，例如：如：the depth(s) of the ocean 海洋深处海洋深处the depth(s) of the jungle 丛林深处丛林深处the depth(s) of the country 穷乡僻壤穷乡僻壤the depth(s) of the winter 隆冬隆冬the depth(s) of ones heart 心灵深处心灵深处the depth(s) of despair 绝望的深渊绝望的深渊16. In the m
25、eantime, Old Tom, and the others are having a good feed on its lips and tongue.在这段时间里，老汤姆和其他虎鲸会饱餐一在这段时间里，老汤姆和其他虎鲸会饱餐一顿，鲸唇和鲸舌就是他们的美食。顿，鲸唇和鲸舌就是他们的美食。In the meantime表示表示“在这期间；与此同时在这期间；与此同时”，如：，如：会议一小时后开始，在此期间，我会议一小时后开始，在此期间，我们喝杯咖啡吧。们喝杯咖啡吧。The meeting will begin in an hour; in the meantime, lets have a
26、coffee.feed on 表示表示“吃吃”，“以以为食为食”，例如：例如： Cows feed on hay during winter. 牛在牛在冬天吃干草。冬天吃干草。feedon/to 表示表示“以以饲养饲养”，例如，例如;We feed our dog on meat.= We feed meat to our dog. 我们喂肉给狗吃。我们喂肉给狗吃。feedwith/into 表示表示“给给添加添加”，例如：，例如：He fed the fire with some logs.= He fed some logs into the fire. 他往火里添了些木材。他往火里添了些
27、木材。 这是一个这是一个it作形式主语的句子，真作形式主语的句子，真正的主语是不定式正的主语是不定式to handle the boat。在以不定式、动名词从句作主。在以不定式、动名词从句作主语的句子里，通常以语的句子里，通常以it作形式主语，而作形式主语，而把真正的主语后置以避免头重脚轻。这把真正的主语后置以避免头重脚轻。这样的句式通常有：样的句式通常有：17. it was difficult to handle the boat. 划船很困难。划船很困难。 to + v.It（形式主语）（形式主语） +v. + that（主语）（主语）+ v. wh- 等词（主语）等词（主语）+ v.
28、forIt is + adj.+ sb. to do sth. of seems （好像（好像）It + appears（看上去（看上去）+ that（主（主 语）语）+v. happens（碰巧（碰巧）It is no use v. ing 做做没有用没有用It is said (reported) that 据说，据报道据说，据报道It is believed that 人们相信人们相信It is thought that 人们认为人们认为It has been proved that 事实证明事实证明It is well-known that 众所周知众所周知18. From James
29、s face, I could see he was terrified of 18. From Jamess face, I could see he was terrified of being abandoned by us.being abandoned by us. 从詹姆斯的脸上我能看出他非常恐慌，生怕被我从詹姆斯的脸上我能看出他非常恐慌，生怕被我从詹姆斯的脸上我能看出他非常恐慌，生怕被我从詹姆斯的脸上我能看出他非常恐慌，生怕被我们遗弃。们遗弃。们遗弃。们遗弃。此处此处此处此处abandonabandon的意思是的意思是的意思是的意思是“ “放弃，抛弃放弃，抛弃放弃，抛弃放弃，抛弃
30、” ”，相关短语有：，相关短语有：，相关短语有：，相关短语有：1 1）背弃祖国）背弃祖国）背弃祖国）背弃祖国/ /朋友朋友朋友朋友abandon ones country/friendabandon ones country/friend2 2）抛弃家庭）抛弃家庭）抛弃家庭）抛弃家庭abandon ones familyabandon ones family 3 3）革除陋习）革除陋习）革除陋习）革除陋习 abandon a bad habitabandon a bad habit4) 4) 放弃职位放弃职位放弃职位放弃职位/ /希望希望希望希望/ /计划计划计划计划/ /主意主意主意主意Ab
31、andon ones post/hope/plan/ideaAbandon ones post/hope/plan/idea19I saw James being firmly held up in the water by Old Tom. 我看到老汤姆正在水我看到老汤姆正在水中隐隐拖着詹姆斯。中隐隐拖着詹姆斯。hold up 的意思是的意思是“举起举起”，例如：，例如：I help up my hand to show that I had a question. 我举手表示想提问。我举手表示想提问。hold up 还表示还表示“使延误使延误”，例如：，例如：We were held up
32、 on our way to the airport in a traffic jam. 我们在前往机场的我们在前往机场的路上因为堵车而延误了。路上因为堵车而延误了。 20. It took over half an hour to get the boat back to James. 用了半个多小时的时间才把船划用了半个多小时的时间才把船划回到詹姆斯身边。回到詹姆斯身边。 这是一个这是一个It takes (sb.) some time/sth. to do sth. 的固定句式，的固定句式，take 意为意为“花费、需要花费、需要”，take 前也可用具体名词作主语。前也可用具体名词作主
33、语。It takes him three hours to do his homework everyday.他每天要用三个小时的时间做作业。他每天要用三个小时的时间做作业。21. reflect (vt. vi.) “反射反射,映射映射,思考思考”After _for a time , he decided not to go there .The mountains _ in the lake were very beautiful . reflect on (upon) “仔细考虑仔细考虑, 思考思考”我要思考一下下一步该怎么做我要思考一下下一步该怎么做.I will reflect o
34、n what to do next .reflecting reflected 22. be/ become (well) aware of / that对对知道，明白；意识到知道，明白；意识到我希望在情况影响你前我希望在情况影响你前,你能察觉到。你能察觉到。 I want you to be aware of the situation before it affects you. 我很清楚他就是我要求助的人。我很清楚他就是我要求助的人。I am well aware that he is the one I should turn to.23. upside down “上下颠倒的上下颠倒
35、的(地地)，乱七八糟的，乱七八糟的(地地)”The office is being decorated, so_. 你把那张图片给弄颠倒了你把那张图片给弄颠倒了.You have got _不要把那个盒子倒着拿不要把那个盒子倒着拿.Dont hold_. inside out “(穿穿)反了反了,倒悬倒悬,乱七八糟地乱七八糟地”Look , Jacks jacket_.everything is upside downthe picture upside done.the box upside doneis inside out24. scare n. v.sb be scared to de
36、ath 某人吓死了某人吓死了”I felt _when I knew how dangerous I was. 当我听到那可怕的声音时当我听到那可怕的声音时, 我都快吓死了我都快吓死了_ (hear) the terrible sound , I would be scared to death . 1) be scared to do sth /of doing sth “害怕干某害怕干某事事” 2) scare sb. to death “ 吓死某人了吓死某人了”You scare me to death. 你吓死我了。你吓死我了。她不敢她不敢(害怕害怕)坐飞机坐飞机.She _in a
37、plane .Hearingscared to deathis scared to fly25. .but where the reef ended, there was a steep drop to the sandy ocean floor. 在本句中在本句中where 引导的是状语从句。引导的是状语从句。1.A cinema is a building where film is shown . 电影院是放电影的馆所。电影院是放电影的馆所。2.You shall put it up where we all can see it. 你该把它挂在我们大家都能见到的地方。你该把它挂在我们大
38、家都能见到的地方。steep drop 陡直向下的坡。陡直向下的坡。 steep 陡直的，陡峭的。陡直的，陡峭的。I never cycle to my grandpas its too steep. 我从来不骑车去外公家我从来不骑车去外公家 - （路）太（路）太陡了。陡了。steep 还可以指过高的价格。如：还可以指过高的价格。如：I wouldnt pay 5,000 yuan for that computer the price is too steep. 我才不我才不花花 5,000元买那台电脑呢，这个价太高了。元买那台电脑呢，这个价太高了。I.Use the proper form
39、s of the following words to fill in the blanks:Finish the following exercises:witness yell flee drag abandon reflect1.Did anyone _ the car accident yesterday?2.The clouds _ in the lake. Didnt you see them?3.Dont _ at me like that.4.The sailors had to _ the sinking ship.witnessabandonwere reflectedye
40、ll5. They all _ from the burning building last night.6. He _ his suitcase along the platform. They were too heavy to carry.II. Use the proper forms of the following phrases to fill in the blanks:ahead of in the meantime help out be aware of upside down scare to death sort out a pack of fleddragged1.
41、There was a roadblock straight _ us.2.Women are often more _ their feelings than men.3.Ill phone for a taxi. _ , you must get packed.4.They were _ by the terrible snow.5.The cooks ill, so I _ this week.ahead ofaware ofIn the meantimescared to deatham helping out6. They met _ wolves in th forest.7. W
42、eve got a few little problems to _ .8. Everything is _ in this house.a pack ofsort outupside downUseful structure ( 20ms )the Passive Voice (including the -ing form )1. 动名词的被动式：动名词的被动式：1）动名词的被动式有两种：）动名词的被动式有两种：being + 过去分词；过去分词；having been + 过去分词。例如：过去分词。例如：a) 每个人都喜欢得到赞美。每个人都喜欢得到赞美。Everybody likes _
43、 .b) 我记得曾经听过这故事。我记得曾经听过这故事。I remember _ the story.2) 在在need/want/require （需要）和（需要）和be worth(值得）值得）等词后面，动名词的主动形式表示被动意义。例等词后面，动名词的主动形式表示被动意义。例如如：a) 这件事需要调查。这件事需要调查。The matter requires _ .= The matter requires to be looked into.being praisedhaving been toldlooking intob) 这本书值得一读。这本书值得一读。The book _ .= T
44、he book is worthy of being read.2、现在分词的被动式。、现在分词的被动式。1)现在分词的被动式也有两种：现在分词的被动式也有两种：being + 过去过去分词（强调事情正在发生）；分词（强调事情正在发生）；having + been + 过去分词（强调事情已经发生，不过去分词（强调事情已经发生，不作定语）。例如：作定语）。例如： a) 她正接受提问，感到有点儿紧张。她正接受提问，感到有点儿紧张。 _to answer the question, she felt a little nervous.is worth readingBeing askedb) 这么好
45、的机会给了你，你怎么能一点也不珍惜这么好的机会给了你，你怎么能一点也不珍惜呢？呢？_ such a good chance, how could you not value it at all?2）作定语时，）作定语时，“being +过去分词过去分词” 表示正在进表示正在进行的动作；行的动作；done 表示一般过去或已经完成的动作；表示一般过去或已经完成的动作；to be done 表示将要发生的董作。例如：表示将要发生的董作。例如： a) 正在建造的房屋，完工后将用作我们的图书馆。正在建造的房屋，完工后将用作我们的图书馆。 The house _ will be our library u
46、pon its completion.Having been givenbeing builtb)所使用的教材都是时新的。所使用的教材都是时新的。 The textbooks _ are all up-to-date.c) 你打算参加下月召开的会议吗？你打算参加下月召开的会议吗？ Are you going to attend the meeting _ next month?usedto be heldFinish the following exercises:1. He has always insisted on his _ Dr Turner instead of Mr Turner
47、. A. been called B. called C. having called D. being called 2. The squirrel was lucky that it just missed _. A. catching B. to be caught C. being caught D. to catch 3. While shopping, people sometimes cant help _ into buying something they dont really need. A. to persuade B. persuading C. being pers
48、uaded D. be persuaded4. _ the meeting himself gave them a great deal of encouragement. A. The president will attend B. The president to attend C. The president attended D. The presidents attending 5. Do you mind _ alone at home? A. Jane leaving B. Jane having left C. Janes being left D. Jane to be l
49、eft6. - What made Bill so angry? - _. His girl friend promised to come at 8:30, but she hasnt come yet. A. Having kept waiting B. Being kept waiting C. To be kept waiting D. Being kept waited 7. _ the whole story, Jane decided not to see the film. A. Having been told B. Having told C. Been told D. T
50、elling 8. The building _ in our school is for us teachers. Though theres noise most of the day, we still feel happy about it. A. built B. having been built C. to be built D. being built 9. While shopping, people sometimes cant help _ into buying something they dont really need. A. to persuaded B. pe
51、rsuading C. being persuaded D. be persuaded 10. _ many times, the boy still didnt know how to do the exercises. A. Having taught B. Having been taught C. taught D. Teaching 答案答案D D。现在分词。现在分词puttingputting作宾语补足语，表作宾语补足语，表示主动。示主动。catch sb.doingcatch sb.doing表示表示“当场抓住当场抓住（撞见）某人在做某事（撞见）某人在做某事”。1. He loo
52、ked around and caught a man _ his hand into the pocket of a passenger. A. put B. to be putting C. to put D. putting高考链接解析：答案为解析：答案为C. for是介词，后接动名词作宾是介词，后接动名词作宾语。动名词的否定形式在前面加语。动名词的否定形式在前面加not。物主代。物主代词词his与动名词的否定形式构成动名词的复合与动名词的否定形式构成动名词的复合结构。结构。2. Victor apologized for _ to inform me of the change in
53、the plan.A. his being not able B. him not to be ableC. his not being able D. him to be not able3. The discovery of new evidence led to _ . A.the thief having caught B. catch the thiefC. the thief being caught D. the thief to be caught解析：答案解析：答案C。Lead to 导致，引起，导致，引起，to 是介词，是介词，后接动名词作宾语。从题意看后接动名词作宾语。从
54、题意看,是是 “小偷被抓住小偷被抓住”,故用动名词的被动式故用动名词的被动式 being caught;因作宾语因作宾语,故动名词的逻辑主语可用名词普通格故动名词的逻辑主语可用名词普通格 the thief 改改名词所有格名词所有格 the thiefs.由于发现了新的证据而抓由于发现了新的证据而抓住了小偷住了小偷.4. _ to sunlight for too much time will do harm to ones skin. A.Exposed B. Having exposedC. Being exposed D. After being exposed解析：答案解析：答案C。在
55、。在这个句子中，个句子中，will do 是是谓语，要用要用动名名词作主作主语expose 与与 ones skin是是动宾关系，要用关系，要用动名名词的被的被动式式 being exposed作主作主语。5. _ such heavy pollution already, it may now be too late to clean up the river. A.Having suffered B. SufferingC. To suffer D. Suffered解析：答案解析：答案A A。从一词可只，要用现在分词的完。从一词可只，要用现在分词的完成式。由于已经受到如此严重的污染，现在清成式。由于已经受到如此严重的污染，现在清理河道可能太晚了理河道可能太晚了
