高考英语大一轮复习课件：必修2Unit 1.ppt

必修必修 2Unit 1Tales of the unexplained【话题词汇话题词汇】1.phenomenon n.现象现象2.probability n.可能性可能性3.disappearance n.失踪失踪4.reasonable adj.合情合理的合情合理的5.memorable adj.难忘的难忘的6.uncommon adj.不寻常的不寻常的7.confusing adj.令人困惑的令人困惑的8.missing adj.失踪的失踪的9.adventurous adj.冒险的冒险的10.form v.形成形成11.launch v.发射发射12.doubt v.怀疑怀疑13.be unaware of 没意识到没意识到14.search for 寻找寻找15.rule out 排除排除16.give an account of 叙述叙述17.account for 说明说明的原因的原因【经典语篇经典语篇】(2014合合肥肥模模拟拟)地地球球上上的的人人类类正正面面临临生生存存危危机机,为为了了解解决决这这一一问问题题,科科学学家家一一直直努努力力在在宇宇宙宙中中寻寻找找一一个个适适合合人人类类居居住住的的星星球球。火火星星作作为为太太阳阳系系中中与与地地球球地地质质构构造造比比较较相相近近的的行行星星,理理所当然地成为人类的首选目标。所当然地成为人类的首选目标。现现在在假假设设人人类类有有一一天天终终能能迁迁居居火火星星,请请你你发发挥挥合合理理的的想想象象,以以“The future life on Mars”为为题题,对对人人类类未未来来在在火火星星上上的的生生活进行预测和描述。活进行预测和描述。The future life on Mars开开门门见见山山,总总体体阐阐述述Compared to the life we are living on the earth,the future life on Mars will be totally different.从从环环境境和和交交通通两两个个方方面面阐阐述述On Mars,people can collect water from under the planets surfaceclean and recyclable.People will be healthier since Mars is not polluted.People will travel back to the earth or other planets in spaceships for sightseeing.Children will just fly to classes in the school spaceships to meet their learning guides and solve problems together.总总结结并并提提出出建建议议Altogether,with the development of science and technology,the dream that man will one day move to Mars is sure to come true.But,I think that at that time,having been taught a lesson on the earth,people should treasure and protect Mars to avoid turning it into the second“earth”.【厚积薄发厚积薄发】.完成句子完成句子(1)我们已经排除了他去火星的可能性。我们已经排除了他去火星的可能性。We _the possibility _ he went to Mars.(2)你如何解释这一事件的发生你如何解释这一事件的发生?How do you _the occurrence of this incident?have ruled outthataccount for.句型转换句型转换(1)把句把句画线部分转换成独立主格结构。画线部分转换成独立主格结构。_,people will be healthier.(2)把句把句画线部分转换成画线部分转换成with复合结构。复合结构。Altogether,_,the dream that man will one day move to Mars is sure to come true.Mars not pollutedwith science and technology developing.单词单词分类记忆分类记忆【核心单词核心单词】不可不记不可不记1._(n.)发生的事情发生的事情(尤指不寻常的或讨厌的尤指不寻常的或讨厌的)2._(vi.)消失消失;失踪失踪3._(n.)案件案件;具体情况具体情况,实例实例4._(n.)长度长度5._(n.)(一一)打打;十二个十二个;十来个十来个incidentdisappearcaselengthdozen6._(vi.)发生发生7._(n.)基地基地,大本营大本营;底部底部;基础基础(vt.)以以为基础为基础8._(n.)奖奖,奖品奖品,奖金奖金(vt.)授予授予,奖励奖励9._(vt.&vi.&n.)攻击攻击;进攻进攻10._(adj.)困惑的困惑的,茫然的茫然的 _(adj.)令人令人困惑不解的困惑不解的 _(vt.&n.)使困惑使困惑;谜谜,令人费解的事令人费解的事11._(n.)可能性可能性 _(adj.)可能的可能的occurbaseawardattackpuzzledpuzzlingpuzzlepossibilitypossible12._(adj.)令人惊奇令人惊奇(惊叹惊叹)的的_(adj.)吃惊吃惊的的,感到惊奇的感到惊奇的 _(vt.)使惊异或惊奇使惊异或惊奇 _(n.)惊奇惊奇,惊异惊异13._(n.)证据证据 _(adj.)明显的明显的,明白的明白的14._(n.)伤害伤害 _(vt.)伤害伤害_(adj.)受伤的受伤的15._(adj.)热情的热情的;热烈的热烈的;满腔热忱的满腔热忱的_(n.)热情热情16._(vi.)存在存在_(n.)存在存在amazing amazedamazeamazementevidenceevidentinjuryinjure injuredenthusiasticenthusiasmexist existence17._(vt.)组织组织,筹备筹备;安排安排,处理处理 _(adj.)安安排有序的排有序的,有组织的有组织的 _(n.)组织者组织者 _(n.)组织组织18._(vt.)检查检查 _(n.)考试考试;检查检查19._(n.)力量力量,力气力气 _(vt.)加强加强,巩固巩固 _(adj.)强壮的强壮的,有力的有力的20._(vt.&n.)联系联系,关联关联 _(adj.)连接的连接的21._(vi.&vt.)生存生存;挺过挺过(难关难关)_(n.)幸存幸存,生存生存 _(n.)幸存者幸存者organizeorganizedorganizerorganizationexamineexaminationstrengthstrengthenstronglinklinkedsurvivesurvivalsurvivor【高频单词高频单词】不可不知不可不知22._(n.)动物动物;(具有某种特征的具有某种特征的)人人23._(adv.&prep.)在在(船、飞机、火车等船、飞机、火车等)上上;上上(船、飞机、火车等船、飞机、火车等)24._(adj.)适当的适当的25._(n.)(文件等文件等)空白处空白处,空格空格 (adj.)空白的空白的;无表情的无表情的26._(n.)足迹足迹,踪迹踪迹27._(vt.)假定假定;认为认为28._(vt.)不予考虑不予考虑;解雇解雇;解散解散creatureaboardappropriate blanktrackassumedismiss29._(n.)(动植物动植物)保护区保护区;储备储备(vt.)预订预订;保留保留;储备储备_(n.)预订预订;保留保留30._(vt.)使确信使确信,使相信使相信_(adj.)令人信令人信服的服的 _(adj.)确信的确信的,感到信服的感到信服的31._(n.)神秘的事或人神秘的事或人 _(adj.)神秘的神秘的,难以理解的难以理解的32._(n.)幽默幽默 _(adj.)幽默的幽默的reserve reservationconvince convincingconvincedmysterymysterioushumourhumorous.短语短语双语互译双语互译1.加紧加紧,加强加强,促进促进 _2.出现出现,现身现身 _3.负责负责,掌管掌管 _4.调查调查 _5.突然大笑起来突然大笑起来 _6.基于基于,以以为根据为根据 _7.属于属于 _step upshow uptake charge oflook intoburst into laughterbe based on/uponbelong to8.使某人相信某事使某人相信某事 _9.与与有联系有联系 _10.前往前往,到到去去 _11.due to _12.carry out_13.put on _14.make up _15.dozens of _convince sb.of sth.be linked/related tomake ones way to由于由于,因为因为执行执行,实施实施播放播放;穿上穿上;上演上演编造编造,杜撰杜撰;化妆化妆;构成构成许多许多,很多很多语境取词语境取词选用上面的单词或短语填空选用上面的单词或短语填空American police have _(加强加强)their search for Justin Foster,who hasnt _(出现出现)since Friday night.But police have not dismissed the possibility that Justin was taken away by aliens.Detective Sam Peterson,who has _ _(负责负责)the case,says that they have been _(调查调查)other possibilities too and that they will not give up until they find hard/strong/real evidence.stepped upshown uptakencharge oflookingintoThe _(迷惑不解的迷惑不解的)expression/look on his face suggested he didnt know how to _(实施实施)his plan.He decided to have a rest for a while.He _(播放播放)his favourite CD and listened happily.To his great joy,a good idea _(想到想到)him.puzzledcarry output onoccurred to.句型句型超级仿写超级仿写1.感官动词感官动词+宾语宾语+宾语补足语宾语补足语Witnesses also say they _(看到贾斯廷朝家走去看到贾斯廷朝家走去)at 10.45 p.m.【仿写仿写】当我进来时当我进来时,我看到他在玩电脑游戏。我看到他在玩电脑游戏。When I came in,I _.saw Justin walking towards his housesaw him playing a computer game2.完全倒装完全倒装Standing inside _(是许多奇怪的是许多奇怪的生物生物)with white skin and large black eyes.【仿写仿写】出席会议的是有着丰富教学经验的老师。出席会议的是有着丰富教学经验的老师。Attending the meeting _.were lots of strange creaturesare teachers with a lot of/rich/muchteaching experience3.状语从句的省略状语从句的省略_(当被问时当被问时)about the possibility that Justin was taken by aliens,Detective Sam Peterson,who has taken charge of the case,told journalists,Sometimes people make up such amazing stories.【仿写仿写】当人们被介绍给对方时当人们被介绍给对方时,他们常常握手。他们常常握手。_,people often shake hands.When askedWhen introduced to each other4.that引导同位语从句引导同位语从句Theres really no hard evidence _(外星人外星人劫持了他劫持了他).【仿写仿写】他今天下午来听讲座是不可能的。他今天下午来听讲座是不可能的。There is no possibility _this afternoon.that aliens took himthat he will come to attend the lecture5.be said to do.据说做据说做The Yeti _(据说是据说是)a large,hairy animal that walkson two feet like a human being.【仿写仿写】据说他对京剧很感兴趣。据说他对京剧很感兴趣。_Beijing Opera.is said to beHe is said to be very interested in【重点单词重点单词】1.puzzled adj.困惑的困惑的,茫然的茫然的【填一填填一填激活思维激活思维】The _ _ on her face shows that she doesnt know what to do.她脸上迷惑不解的表情说明她不知道要做什么。她脸上迷惑不解的表情说明她不知道要做什么。I had _ _ _ the problem for over an hour.我对此问题苦思冥想了一个多小时。我对此问题苦思冥想了一个多小时。They are puzzled what they should do next.(句型转换句型转换)=They are puzzled _ _ _ _.puzzled expression/lookbeen puzzled overwhat to do next【记一记记一记构建知识构建知识】(1)be puzzled over/about 对对苦苦思索苦苦思索/迷惑不解迷惑不解be puzzled+疑问词疑问词+to do/从句不知道从句不知道(2)puzzle vt.使迷惑使迷惑,使难解使难解n.难题难题,难解之事难解之事,谜谜be a puzzle to sb.对某人来说是个谜对某人来说是个谜(3)puzzling adj.令人困惑不解的令人困惑不解的*(2011陕陕西西高高考考)What puzzles you is actually a puzzle for many parents in China.使你困惑的事也正好是中国很多家长感到困惑的事。使你困惑的事也正好是中国很多家长感到困惑的事。*The spelling of English is often puzzling.英语拼写常常使人伤脑筋。英语拼写常常使人伤脑筋。*Can you work out this puzzle?你能解出这个谜吗你能解出这个谜吗?【悟一悟悟一悟参透误区参透误区】过过去去分分词词形形式式的的形形容容词词puzzled除除了了用用来来修修饰饰人人,还还可可用用来来修修饰饰与与人人有有关关的的某某些些名名词词,如如look,expression,voice,face等等。当当表表示示事事物物的的特特征征或或属属性性时时,常常用用现现在在分分词词形形式式的的形形容容词词puzzling。2.assume vt.假定假定;认为认为【填一填填一填激活思维激活思维】I think we can safely _ _ he is out of town.我觉得我们可以很有把握地认为他出城了。我觉得我们可以很有把握地认为他出城了。I have always _ _ _ _ American.我一直以为她是美国人。我一直以为她是美国人。assume thatassumed her to be【记一记记一记构建知识构建知识】(1)assume+that 从句以为从句以为/认为认为assume sb./sth.to be 认为某人认为某人/某事某事It is generally assumed that.普遍认为普遍认为(2)assumption n.假定假定;假想假想make an assumption 做出臆断做出臆断/假设假设on the assumption that 基于基于的假设的假设,假设假设(3)assuming/supposing that.假设假设*(2011湖湖北北高高考考)When it comes to medicine,I had assumed it was important to always be honest with my patients.当谈到医药时当谈到医药时,我原以为永远对病人诚实是重要的。我原以为永远对病人诚实是重要的。*It is generally assumed that stress is caused by too much work.普遍认为普遍认为,压力是工作过重所致。压力是工作过重所致。*People tend to make assumptions about you based on your appearance.人们往往以貌取人。人们往往以貌取人。*Assuming(that)it rains this afternoon,what shall we do?假如今天下午下雨的话假如今天下午下雨的话,我们怎么办我们怎么办?【猜一猜猜一猜熟词生义熟词生义】写出黑体部分的含义。写出黑体部分的含义。I am not afraid to assume the responsibility.()承担承担3.occur vi.发生发生【填一填填一填激活思维激活思维】When did the earthquake _?地震是何时发生的地震是何时发生的?A good idea suddenly _ _ him.他突然想到一个好主意。他突然想到一个好主意。It didnt _ _ _ _ ask for help.她没有想到去求助。她没有想到去求助。occur/happenoccurred tooccur to her to【记一记记一记构建知识构建知识】sth.occurs to sb.某人突然想起某人突然想起/想到某事想到某事It occurs to sb.to do sth.某人突然想起做某事某人突然想起做某事It occurs to sb.+that 从句某人突然想起从句某人突然想起*(2013广广 东东 高高 考考)Were there no cleaners,an inevitable deterioration in environment would occur.如果没有清洁工如果没有清洁工,不可避免的环境恶化就会发生。不可避免的环境恶化就会发生。*Why didnt it occur to you to phone the police?你为什么没有想起打电话报警呢你为什么没有想起打电话报警呢?*It never occurred to me that he might be in trouble.我怎么也没想到他会遇到麻烦。我怎么也没想到他会遇到麻烦。【辨一辨辨一辨明晰异同明晰异同】happen/occur/take place(1)指指“(偶偶 然然)发发 生生”时时,happen和和 occur可可 互互 换换。但但 是是,happen to sb./sth.常常指指不不好好的的事事情情发发生生在在某某人人/某某物物身身上上;occur to sb.则则指指“某某人人想想到到(某某个个想想法法或或主主意意)”;而而take place则不可与则不可与to连用。连用。(2)另外另外,happen to do sth.意为意为“碰巧做某事碰巧做某事”。(3)take place常指必然会发生的事情或人为安排发生的事情。常指必然会发生的事情或人为安排发生的事情。*He happened to be watching TV when I entered the room.当我进房间时当我进房间时,他碰巧正在看电视。他碰巧正在看电视。*The examination took place on Friday.考试是在周五举行的。考试是在周五举行的。4.award n.奖奖,奖品奖品,奖金奖金 vt.授予授予,奖励奖励【填一填填一填激活思维激活思维】They have given _ _$1,200 to each of the winners.他们已经给每位获胜者颁发了他们已经给每位获胜者颁发了1 200美元的奖金。美元的奖金。He _ _ the Nobel Prize _ his contribution to world peace.他因对世界和平所做出的贡献而被授予诺贝尔奖。他因对世界和平所做出的贡献而被授予诺贝尔奖。awards ofwas awardedfor【记一记记一记构建知识构建知识】award sb.sth./award sth.to sb.授予授予/奖励奖励/判给某人某物判给某人某物be awarded.for.因因而被授予而被授予*They decided to award the best film the first prize.他们决定授予这部最佳影片一等奖。他们决定授予这部最佳影片一等奖。*(2012山山东东高高考考)He was awarded a medal for building the bridge.他因为建了这座桥而被授予一枚奖章。他因为建了这座桥而被授予一枚奖章。【辨一辨辨一辨明晰异同明晰异同】award指为鼓励在工作中达到或完成所提出要求或条件的指为鼓励在工作中达到或完成所提出要求或条件的人进行的授奖行为人进行的授奖行为,更注重荣誉更注重荣誉,而不在乎奖品或奖而不在乎奖品或奖金金reward指对别人的工作、服务或帮忙的奖赏与报答指对别人的工作、服务或帮忙的奖赏与报答,可以可以是酬金是酬金,也可以是物品也可以是物品prize“奖金、奖品、战利品奖金、奖品、战利品”,指竞赛获奖指竞赛获奖,竞争、抽奖竞争、抽奖或工作学习中的优胜者获得的奖励或工作学习中的优胜者获得的奖励,可以是钱可以是钱,也可也可以是物以是物5.reserve n.(动植物动植物)保护区保护区;储备储备 vt.预订预订;保留保留;储备储备【填一填填一填激活思维激活思维】We accept your statement _ _.我们毫无保留地接受你的意见。我们毫无保留地接受你的意见。I have _ a room _ you at the hotel.我已在旅馆为你预订了一个房间。我已在旅馆为你预订了一个房间。Saturdays are busy,so its a good idea to _ _ _ in advance.星期六很忙星期六很忙,所以提前预订一张桌子是个不错的主意。所以提前预订一张桌子是个不错的主意。without reservereservedforreserve a table【记一记记一记构建知识构建知识】(1)without reserve 毫无保留地毫无保留地in reserve 备用备用natural reserve 自然保护区自然保护区(2)reserve sth.for sb.为某人保留某物为某人保留某物reserve a room/table/seat 预订房间预订房间/桌子桌子/座位座位reserve the right to do sth.保留做某事的权利保留做某事的权利*If you look at many online terms of service carefully,they reserve the right to change the terms at any time.如如果果你你仔仔细细地地看看许许多多在在线线服服务务条条款款,他他们们都都保保留留在在任任何何时时间间更更改条款的权利。改条款的权利。6.strength n.力量力量,力气力气【填一填填一填激活思维激活思维】He hasnt got _ _ _ lift the box.他没有足够的力气搬起那个箱子。他没有足够的力气搬起那个箱子。He has been doing weight-training to _ _ _ _.他一直在进行举重训练以增强体力。他一直在进行举重训练以增强体力。enough strength tobuild up his strength【记一记记一记构建知识构建知识】have the strength to do sth.有做某事的力气有做某事的力气/意志力意志力strengths and weaknesses 长处和弱点长处和弱点*(2013山山东东高高考考)One day,he gathered up all his strength and decided to attend a job interview.一天一天,他鼓足勇气他鼓足勇气,决定参加一个求职面试。决定参加一个求职面试。【辨一辨辨一辨明晰异同明晰异同】strength常指人体或物体内在的力常指人体或物体内在的力,如力气、耐力、抵如力气、耐力、抵抗力抗力energy人的精力人的精力,自然界的能、能量、能源自然界的能、能量、能源force常指促使物体运动的力常指促使物体运动的力,也可指势力、武力、也可指势力、武力、暴力、军队等暴力、军队等power指力量、功能指力量、功能,人或机器等事物潜在的或能发人或机器等事物潜在的或能发挥出来的力量、职权、权力或政权挥出来的力量、职权、权力或政权*David devoted all his energy to his work.One night he came home very late from his office.He found there was a power failure that day.Unfortunately he couldnt find his key anywhere.So he gathered all his strength to force the door open.The next day he had to pay to have his door repaired.【猜一猜猜一猜熟词生义熟词生义】观察句子观察句子,写出黑体部分的含义。写出黑体部分的含义。*(2013浙江高考浙江高考)He helped me identify my weaknesses and my strengths.()长处长处7.convince vt.使确信使确信,使相信使相信;说服说服【填一填填一填激活思维激活思维】How can I _ you _ her honesty?我怎么样才能使你相信她的诚实呢我怎么样才能使你相信她的诚实呢?We _ Mary _ _ there by train rather than by plane.我们说服了玛丽坐火车去那儿我们说服了玛丽坐火车去那儿,而不是坐飞机。而不是坐飞机。What she said _ _ _ I was wrong.她的话使我相信我错了。她的话使我相信我错了。convinceofconvincedto goconvinced me that【记一记记一记构建知识构建知识】(1)convince sb.of sth.使某人相信某事使某人相信某事convince sb.to do sth.说服某人做某事说服某人做某事convince sb.that.使某人相信使某人相信(2)convinced adj.确信的确信的,感到信服的感到信服的be convinced that 相信相信convincing adj.令人信服的令人信服的*I am convinced that youre right.我相信你是对的。我相信你是对的。*We havent found the convincing evidence.我们还没有找到令人信服的证据。我们还没有找到令人信服的证据。【核心短语核心短语】8.step up 加紧加紧,加强加强,促进促进;走近走近【填一填填一填激活思维激活思维】观察句子观察句子,写出黑体部分的含义。写出黑体部分的含义。You should step up your search for the lost boy.()She stepped up to receive her prize.()加紧加紧,加强加强走上前走上前【记一记记一记构建知识构建知识】step aside让开让开;让位让位step back后退一步后退一步step forward 走上前来走上前来,往前一步往前一步step by step 逐渐地逐渐地,一步步地一步步地keep in step with与与保持一致保持一致9.due to 由于由于;因为因为(一般不置于句首一般不置于句首)【填一填填一填激活思维激活思维】观察句子观察句子,写出黑体部分的含义。写出黑体部分的含义。It was a mistake due to carelessness.()Have they been paid the money(that is)due to them?()Rent bill is due today.()Their plane is due to arrive in 15 minutes.()He is due to leave for America with his girlfriend tomorrow.()由于由于;因为因为应给的应给的,应支付的应支付的到期的到期的预计的预计的约定的约定的【记一记记一记构建知识构建知识】be due to do sth.预定做某事预定做某事be due for sth.应该得到某物应该得到某物be due to sb.应给某人的应给某人的;该付给某人的该付给某人的【辨一辨辨一辨明晰异同明晰异同】due to侧重侧重“起因于起因于”,在句中多作表语在句中多作表语,有时作有时作状语状语because of着重某种原因的理由着重某种原因的理由,在句中通常作状语在句中通常作状语thanks to突出突出“感激之情感激之情”,意思为意思为“幸亏幸亏;多多亏亏”owing to可以与可以与due to互换互换,但在句中多作状语但在句中多作状语,也可也可以作表语以作表语10.show up 出现出现,现身现身;露出露出,显出显出【填一填填一填激活思维激活思维】To the fans disappointment,the film star didnt _ _ at the opening ceremony.令影迷们失望的是令影迷们失望的是,那位影星并没有出现在开幕式上。那位影星并没有出现在开幕式上。Why didnt you _ _ at the meeting?你为什么没有出席会议你为什么没有出席会议?show upshow up【记一记记一记构建知识构建知识】show sb.around领某人参观领某人参观show off 炫耀炫耀,卖弄卖弄show sb.in/out 领某人进来领某人进来/出去出去show sb.to/into(a place)领某人去领某人去(某地某地)be on show 展出展出,陈列陈列11.make up编造编造,杜撰杜撰;构成构成【填一填填一填激活思维激活思维】观察句子观察句子,写出黑体部分的含义。写出黑体部分的含义。He made up an excuse to explain why he was late.()Girls make up 60%of our class.()Now many girls like to make up when they are still quite young.()I have to work hard to make up for the lost time.()Why dont you two forget your differences and make up?()编造编造,杜撰杜撰构成构成,组成组成化妆化妆弥补弥补和解和解【辨一辨辨一辨明晰异同明晰异同】“组成组成”各不同各不同make up用部分作主语用部分作主语,表示表示“部分构成整体部分构成整体”,用于用于主动语态主动语态be madeup of用整体作主语用整体作主语,表示表示“整体由部分构成整体由部分构成”consist of用整体作主语用整体作主语,表示表示“整体由部分构成整体由部分构成”,引引申为申为“包含有包含有”,不能用于被动语态不能用于被动语态12.make ones way to 前往前往,到到去去【填一填填一填激活思维激活思维】选择合适的词组填空。选择合适的词组填空。fight ones way,feel ones way,make ones wayThe team slowly _through the jungle.The surrounded soldiers _out.We couldnt see anything in the cave,so we had to _out.made their wayfought their wayfeel our way【记一记记一记构建知识构建知识】lose ones way 迷路迷路feel ones way 摸索着前进摸索着前进fight ones way奋勇前进奋勇前进push ones way挤着前进挤着前进【经典句式经典句式】13.Witnesses also say they saw Justin walking towards his house at 10.45 p.m.目击者也说晚上目击者也说晚上10点点45分他们看到贾斯廷正朝家走去。分他们看到贾斯廷正朝家走去。【填一填填一填激活思维激活思维】用所给词的适当形式填空。用所给词的适当形式填空。(2013福建高考福建高考)From the picture,we can see a family of three _(walk)on a long red carpet.从这幅图中从这幅图中,我们可以看到一家三口正走在长长的红毯上。我们可以看到一家三口正走在长长的红毯上。The manager wanted to see the plan _(carry)out.经理想看到计划得到执行。经理想看到计划得到执行。He was seen _(play)football on the playground just now.有人刚才看到他在操场上踢足球。有人刚才看到他在操场上踢足球。walkingcarriedplayto【记一记记一记构建知识构建知识】(1)see sb.do sth.看到某人做过某事看到某人做过某事see sb.doing sth.看到某人正在做某事看到某人正在做某事see