资源简介 (共38张PPT)UNIT 4 JOURNEY ACROSS A VAST LANDSection A Reading and Thinking课文知识点SEEING THE TRUE NORTH VIA RAIL: VANCOUVER AND THE HEART OF CANADA坐火车看“真北方”:温哥华与加拿大腹地Li Daiyu and her cousin Liu Qian went to Canada to visit their cousins in Halifax on the Atlantic coast. Rather than travel by commercial airline all the way, they decided to fly to Vancouver and then take the train. For both of them, the thought of crossing the whole country by rail was exciting.rather thancommercial airlineall the way而不是商业航班一路上,自始至终by the way顺便说李黛予和表妹刘倩前往加拿大探望居住在大西洋海岸哈利法克斯市的表兄妹。她们没有一路乘坐商业航班,而是决定先飞到温哥华,然后再乘坐火车。一想到可以坐火车横穿整个国家,姐妹俩就激动不已。Rather than travel by commercial airline all the way, they decided to fly to Vancouver and then take the train.rather than “而不是;不愿” = instead of与其说……倒不如说……rather than 为并列连词,通常用在平行结构中,连接两个并列成分,即rather than 前后两部分在成分和形式上应该一致。并列成分可以是动词、名词、代词、形容词、介词短语、动名词、分句、不定式等。语境感知① He ran rather than walked.②They saw many goats rather than grizzly bears.③The scenery was awesome rather than uninviting.④We’ll have the meeting in the classroom, rather than in the great hall.rather than连接的两个并列成分作主语时,谓语v遵循就远原则是你而不是我要去野营。You rather than I _____ going to go camping.arerather than后接不定式时,不定式可以带to,也可以不带to,但当rather than位于句首时,只能接不带to的不定式。prefer to do…rather than do…=would do …rather than do=would rather do… than do=prefer doing to doing宁愿做……也不做……He prefers to stay at home rather than go to see a film.=he would stay at home rather than go to see a film.=he would rather stay at home than go to see a film.1.She telephoned rather than ________(write).2.She enjoys singing rather than ______(dance)3.You rather than I ______(be)going to see the scenery.4.I prefer to ___(get)up early rather than go to school without breakfast.=I would rather _____(get )up early than go to school without breakfast.=I would get up early rather than ____(go) to school without breakfast5.I think Tom,rather than you, (be) to blame for the broken camera.6.I on the backseat of a bicycle than cry in a BMW car.=I would laugh on the backseat of a bicycle in a BMW car.=I preferred on the backseat of a bicycle in a BMW car.iswould rather laughrather than cryto laughrather than crywrotedancingaregetgetgoBefore starting out, they spent a couple of days in Vancouver, seeing the sights. During their first day, as is typical of Vancouver, it rained. Despite the weather, they were able to take a boat ride out into the bay, and later visit an island that had wonderful shops selling crafts and antiques. The next day was clear and mild, and they were pleased to see the beautiful mountains looking out over the city. Later, they took a pleasant hike in a forest just a short distance away.出发一两天欣赏风光一如往常尽管出售手工艺品和古董清澈温和俯瞰着整座城市不远处出发前,她们在温哥华待了两天,欣赏当地风光。第一天,温哥华一如往常细雨蒙蒙。尽管天气不佳,她们仍然泛舟驶入海湾,接着游览了一座岛屿。岛上有精致的店铺,出售手工艺品和古董。第二天,天气晴朗,温度适宜,她们看到壮美的群山俯瞰着整座城市,甚是欣喜。随后,她们在不远处的森林中徒步旅行,十分惬意。start outa couple of dayssee the sightsbe typical ofdespitesell crafts and antiquesclear and mildlook out over the citya short distance away.=in spite ofLater, they took a pleasant hike in a forest just a short distance away.★ pleasant adj.令人愉快的;友好的It’s always pleasant to do what you’re good at doing.① Wilson was __________with his _______________design.② It gives me great______________(please)to introduce our school life.③they often remember the____________days they had with you.翻译:做自己喜欢的事总是令人愉快的。________________________________老师对我的进步非常满意。____________________________________________pleasedpleasingpleasurepleasant(1)pleasure n. 快乐;乐趣 with pleasure 好的;可以;非常乐意it’s a pleasure=it’s my pleasure 愿为你效劳;不用谢(2)please interj. 请(礼貌用语) v.使高兴,使满意 please oneself 乐意怎样就怎样(3)pleased adj. 感到满意的;高兴的be pleased with 对……感到满意(4)pleasing adj. 令人满意的;令人高兴的(修饰物)It’s always pleasant to do what you like.The teacher is so pleased with my progress.重点句式教材原句 p.38 During their first day,as is typical of Vancouver,it rained.第一天,温哥华一如往常细雨蒙蒙。【句式分析】在本句中,as is typical of Vancouver 是 as 引导的定语从句,as 代指整个主句,as 在从句中作主语。1 as 引导非限制性定语从句引导非限制性定语从句,代指整个主句的内容。从句可放在主句前、主句后或主句中间。As we have anticipated,it is freezing at the top of the mountain. 和我们预料的一样,山顶很冷。His opinion often conflicts with his parents,as is often the case with teenagers.他的观点往往和父母的有冲突,这种情况在青少年中很常见。【归纳拓展】as 引导非限制性定语从句常用的固定表达:as we all know 众所周知 as is well known 众所周知as you see 如你所见 as can be seen 正如所见as we expect 正如我们预料的那样 as is/was expected 正如预料的那样as I can remember 正如我所记得的 as has been said before 如前所述as is often the case 情况常常是这样as引导非限制性定语从句,可指代整个主句。从句可放在主句之前, 也可以放在主句之后, 有时还可以放在主句的中间。(1) _____________ (正如所报道的那样), talks between the two countries are making progress.(2) Grammar, ____________________ (正如之前所说的那样), is not a set of dead rules.(3) He is absent, ________________ (正如往常那样).As is reportedas has been said beforeas 引导非限制性定语从句as is often the case单句语法填空(1) The output has doubled, was expected.(2)As (mention) above,peanuts are fit to grow in sand fields.(3) It is a truly delightful place, looks the same as it must have done 100 years ago withits winding streets and pretty cottages.完成句子(4) The number of smokers, (正如报道的那样), has decreased by 17 percent injust one year.(5) There is no simple answer, (情况常常如此) in science.(6) (如上所述),he has overcome the difficulty.(7) (小孩子往往如此),Amy was better by the timethe doctor arrived.asis mentionedwhichas is reportedas is often the caseAs is said aboveAs is often the case with childrenThe next morning, the two girls arose early to take the train to Lake Louise, passing through the Canadian Rockies. Seen from the train window, the mountains and forests of Canada looked massive. When the train arrived at the station, they took a taxi to Lake Louise, where the blue water literally took their breath away with its exceptional beauty. They spent the night and then took a coach bound north through the Canadian Rockies to Jasper. Looking at the beautiful scenery, they both agreed that it was the most awesome journey they had ever taken. In addition to seeing spectacular mountain peaks and forests, one highlight of their trip was being able to see many different creatures, including deer, mountain goats, and even a grizzly bear and an eagle.arise earlymassivetake their breath awayexceptional beautyliterallycoach boundthe most awesome journeyspectacular mountain peakshighlightmany different creaturesgrizzly bear早早起床大量的;大规模的美丽异常真正地长途汽车最棒的旅行壮丽的山峰和森林亮点种类繁多的动物一只灰熊次日清晨,两个女孩早早起床,登上开往路易斯湖的火车,穿越加拿大落基山脉。从车窗往外望去,加拿大巍峨的山脉和辽阔的森林尽收眼底。火车到站后,她们乘坐出租车前往路易斯湖。那里湛蓝的湖水美丽异常,摄人心魄。住了一夜之后,她们乘坐长途汽车,向北穿过加拿大落基山脉,直达贾斯珀。望着眼前的美景,两人一致认为这是她们所经历过的最棒的一次旅行。除了欣赏壮丽的山峰和森林,旅程的亮点之一是能看到种类繁多的动物,如鹿、山羊、甚至还有一只灰熊和一只老鹰。highlight [ ha la t] n. 最好或最精彩的部分v. 突出; 强调; 使醒目(1)the highlight of .... ......的亮点(2) highlight v = stress = emphasizehighlight the importance of... 强调……的重要性这次旅行中的最精彩的一件事是参观泰姬陵。One of the highlights of the trip was seeing the Taj Mahal.强调开阔眼界的重要性highlight the importance/ significance of broadening horizons/viewsIn addition to seeing spectacular mountain peaks and forests, one highlight of their trip was being able to see many different creatures, including deer, mountain goats, and even a grizzly bear and an eagle.highlight n.最好或最精彩的部分 vt.突出,强调,使醒目这家博物馆的亮点是它的收藏。我们应该强调自身的优势。The highlight of the museum is its collection.We should highlight our own advantages.Looking at the beautiful scenery, they both agreed that it was the most awesome journey they had ever taken.① She is the most intelligent student that I have ever seen in this school.② I must say that it was the best game I had ever played.在句型“This/It+be+最高级+(that)从句”中,从句要用完成时。如果be动词是is, 从句用现在完成时;如果be动词是was, 从句用过去完成时。她是我在这所学校见过的最聪明的学生。我必须说这是我玩过的最好的一个游戏。The next morning, the two girls arose early to take the train to Lake Louise,passing through the Canadian Rockies.arise vi.(arose,arisen) 起身;出现;由…引起【词汇拓展】①arise from /out of=result from起因于,由……产生②arise out of...由……引起,由……产生,起因于……③arise from one's seat某人从座位上站起来④arise in sb.'s mind在某人心里产生①As is known to us, the sun _____ in the east and sets in the west.②Years of experience in driving made Mr Black convinced that he could deal with emergencies _____ at any time.③Give your child some old machines such as a broken radio or TV set to play with and it will _____his curiosity.④To _____people’s awareness of protecting the environment, we launched a campaign.risesarisingarouseraise①Hearing the heavy footsteps approaching,Sam arose _______ his chair immediately.②We were determined to conquer the problems that _________(arise) in the pastThat morning I _______ (arise) early and went out to the road .完成句子③At break, our teacher got down to dealing with the matter ___________________.休息时,我们的老师开始处理课堂上出现的问题。翻译:失误往往是由粗心引起的。_________________________________fromarosearising from his classarose【选词填空】 :Mistakes often arise from carelessness.arise, rise, raise, arouse.用含breath的短语填空(1)By mile 17,I became and the once injured ankle hurt badly. (2)He entered the house,but soon had to run back to . (3) ,and then you may feel relaxed. (4)We all while Mr Evans announced the exam results. (5)When I looked through the window I saw the tower whose beauty . breath n.呼吸的空气they took a taxi to Lake Louise where the blue water literally took their breath away with its exceptional beauty.take sb.’s breath away 令人惊叹hold sb's breath 屏息;屏气take a deep breath 深吸一口气lose sb's breath 喘不过气来(be) out of breath 喘不过气来;上气不接下气breath n. breathe v.breathless adj. 气喘吁吁的breathtaking adj. 激动人心的,惊人的out of breathcatch his breathTake a deep breathheld our breathtook my breath awayI took a deep breath and started climbing the mountain. I was out of breath when I arrived at the top of the mountain. But it was worthwhile because the scenery took my breath away. I mean,the scenery was really breathtaking.我深呼吸,然后开始爬山。当我到达山顶的时候我已经喘不上气了。但这一切都值得,因为风景令人惊叹。我的意思是,风景真是令人叹为观止。单句语法①Life is not the amount of breaths you take,it's the moments that take your breath ______ .②I like arising very early in summer.The morning air is so good _________ (breathe).完成句子③ ____________________ (尽管上气不接下气), we were rewarded with spectacular peak, whose awesome scenery____________________________________(令我惊叹).翻译全红婵的表现让观众惊叹不已。awaytook my breath away/caught my breathto breatheThough out of breathQuan Hongchan’s performance took the audience’s breath away.massive adj. 巨大的;非常严重的Seen from the train window,the mountains and forests of Canada looked massive.从火车的窗户向外看,外面是连绵起伏的山脉和大片的森林。mass n.块,团;大量,众多a mass of=masses of大量的;许多的the masses群众,平民百姓1.The cold air (mass) are moving from Siberia towards Inner Mongolia.2.He devoted his life to maintaining the political rights of masses.他一生致力于维护群众的政治权利。3.翻译我们必须作出极大的努力去改善普通群众的生活水平。massestheWe must make massive efforts to improve the living standards of the ordinary people.①Several hours later, they finally managed to board a plane bound ____China.②He is bound up __ his work which is bound up____the welfare of the community.③Now that you have done so much work, you’re bound ________ (win) the speech contest.So long as we hold our dreams and never give up,we_______________________.只要我们坚持梦想并且永不放弃,我们一定会取得成功。forare bound to achieve successinbound adj.准备前往(某地);一定会withThey spent the night, and then took a coach bound north through the Canadian Rockies to Jasper.to winbe bound to do...一定做……;有义务做……be bound for准备前往(某地)be bound up with sth. 与某事有密切关系be bound up in sth. 忙于/专心于/热衷于某事From Jasper, they caught the train towards Toronto. One of the train's first stops was in Edmonton, the provincial capital of Alberta, the centre of Canada's huge oil and gas drilling industry. Edmonton is freezing cold in winter, with daily temperatures averaging -10°C. Since it can be too cold to go outdoors, Edmonton is home to many shopping malls. In fact, one of the largest shopping malls in North America is in Edmonton.From Edmonton, the train headed southeast across the great Canadian Prairie. At school, Daiyu and Liu Qian had learnt that Canada's population is only slightly over thirty-seven million. However, they did not anticipate seeing such an open country, and were truly amazed. They went through two wheat-growing provinces, where they saw a bunch of farms that covered a very large area.在贾斯珀,她们坐上了开往多伦多的火车。火车的头几站中有一站是埃德蒙顿,这是阿尔伯塔的省会,也是加拿人庞大的油气开采业中心。埃德蒙顿冬季十分寒冷,日平均气温为零下 10 摄氏度。由于天寒地冻,不适合户外活动,因此埃德蒙顿拥有众多大型购物中心。事实上,北美最大的购物中心之一就在埃德蒙顿。火车从埃德蒙顿出发,向东南方行驶,一路穿越加拿大大草原。黛予和刘倩在学校学过,加拿大的人口才刚过 3700万。但两人还是未曾料想能看到如此辽阔的国度,真是惊叹不已。她们穿越两个种植小麦的省份,看到一片片广阔的农场。provincial capitalfreezing coldbe home toanticipate seeinga bunch of省会十分寒冷拥有料想能看到一堆 一束本意为“是……的栖息地/家乡/产地”在此引申为“拥有”anticipate [ n t s pe t]:vt.①预料/预期;期待anticipation un.预料/预期;期待近义词:expectanticipate doing sth 预料做......antcipate + that从句 预料It is anticipated that 据预料……as anticipated 正如预期,不出所料in anticipation (of) 预料,预计;期待However,they did not anticipate seeing such an open country,and were truly amazed.但两人还是未曾料想能看到如此辽阔的国度,真是惊叹不已。单句语法填空①__________________ (anticipate) this major problem, the company took a series of methods to make sure the project would go as smoothly as possible.②He bought extra food in the ________ (anticipate) that more people would comethan he had invited .③It ______________ (anticipate) that she will resign.We anticipate _______ (see) you again soon.【写美】 一句多译③人们预料这项研究将有许多不同的实际应用。→______________________the research will have many different practical applications.→____________________the research will have many different practical applications.seeingPeople anticipate thatIt is anticipated thatHaving anticipatedanticipationis anticipatedEdmonton is freezing cold in winter, with daily temperatures averaging -10℃.with 复合结构在句中常作状语,表示伴随状况、原因、方式、条件等。其结构如下:with+宾语+宾补to do 表示将要做的动作doing 表示主动或正在进行的动作done 表示被动或已完成的动作adj./adv./prep.表状态(1) With her eyes ________ (close), she touched the gift gently.她闭着眼轻轻地抚摸着礼物。(2) With a lot of work _______ (do), he wasn't allowed to go out.因为还有很多工作要做,他没有被允许外出。(3) With the crowds ________ (cheer), they drove to the palace.在人群的欢呼声中,他们驱车来到皇宫。(4) He was asleep with his head ____________.他头枕着手臂睡着了。closedto docheeringon his arms作方式状语作原因状语作伴随状语作方式状语Practice:I can’t go out_______________________. 要洗这些衣服,我无法出去了。②All the afternoon he worked _______________________.整个下午他都锁着门在工作。③___________________________, we can’t visited it.因为这座庙正在维修,我们不能去参观。④ The man was walking on the street,________________________.那人在街上走着,胳膊下夹着一本书⑤The square looks more beautiful than even____________________所有的灯亮起来, 广场看起来更漂亮了。⑥you shouldn’t speak ________________你不应该满嘴食物说话。with all these clothes to washwith the door lockedWith the temple being repairedwith a book under his armwith all the light onwith your mouth fullfreezing ①adj. 极冷的;冰冻的 (extremely cold) ②n. [U] 冰点 ③adv. 极冷地 (作程度副词)It’s so cold. I’m freezing! 太冷了。我要冻僵了。It is freezing cold today. 今天好冷。freezing point 冰点above / below freezing 在冰点以上/以下The temperature tomorrow will fall below freezing (point).明天气温将降到冰点以下。freeze v. 结冰;冻住;冻死;(因害怕等)停住不动;惊呆freeze-froze-frozenfreeze to death冻死freeze with horror 吓呆了sb.’s blood freezes 某人血液凝固frozen adj. 冷冻的;冻僵;结冰的;吓呆be frozen with fear / terror / fright吓呆了a frozen face冻僵的脸蛋I am frozen(我快冻僵了)= I am freezing (cold)(我快要冻死了)quick-frozen food 速冻食品adj. 极冷的;冰冻的adv. 极冷地 (作程度副词)After another day on the train, eventually they were back in an urban area, the city of Winnipeg. From there, they travelled through the night, and woke up in Ontario--a land of forests and lakes. The train thundered on, through the rolling hills. The bushes and maple trees outside their windows were red, gold, and orange, and there was frost on the ground, confirming that autumn had arrived in Canada. Night came again, and the train turned south towards Toronto. When they woke up the next morning and pulled back the curtain, they could see the wide stretch of Lake Huron-one of the four Great Lakes on Ontario's southern border. It was not until 9:30 a.m. that they finally reached the capital of Ontario, Toronto. All in all, their trip from Vancouver to Toronto had taken a duration of four days.thunder onrolling hillsbushes and maple treespulled back the curtaintake a duration of four days她们在火车上又度过了一天,最终回到了都市区域--温尼伯市。从该市出发,她们连夜前行,从梦乡中醒来时,火车已抵达森林和湖泊密布的安大略省。火车继续轰隆隆地向前行驶,穿过绵延的群山。窗外的灌木丛和枫树林呈红色、金色和橘黄色,地面盖着一层霜,表明加拿大已进入秋季。夜幕再次降临,火车转向南行,开往多伦多。次日清晨,她们醒来,拉开车窗窗帘,辽阔的休伦湖映入眼帘。休伦湖是安大略省南部边境的四大湖之一。上午九点半,她们终于抵达安大略的省会多伦多。从温哥华到多伦多,她们的旅行总共历时四天。It was not until… that…直到……才…例句感知It was not until yesterday that I noticed it.直到昨天我次注意到这件事。not until he got seriously ill did he know the importance of health.直到他得了重病,他才知道健康的重要性。It was not until 9:30 a.m. that they finally reached the capital of Ontario, Toronto.not until...”结构常用于强调句型中:结构:It is/ was not until + 被强调部分 + that + 其他部分not until引导时间状语从句置于句首时,从句用陈述语序,主句用倒装语序。直到上中学我才意识到父母是多么正确。I didn’t realize how right my parents were ____________ I entered high school.=It wasn't until I entered high school ____________ I realized how right my parents were.=Not until I entered high school _______________ I realize how right my parents were.untilthatdid直到我成为我们班的班长,我才意识到团队合作的重要性。________________________________________ that I realized the importance of team work.It was not until I became monitor of our classIt was not until he got seriously ill that he knew the importance of health.__________________________________________________________I realize the importance of team work.Not until I became monitor of our class didIt is not until we are ill that we know the importance of health.我们只有生病了才知道健康的重要性。(强调句型)直到他得了重病,他才知道健康的重要性。(强调句型)Seen from the train window, the mountains and forests of Canada looked massive.= When the mountains and forests of Canada were seen from the train window, they looked massive.seen from the train window:过去分词作状语Looking at the beautiful scenery, they both agreed that it was the most awesome journey they had ever taken= When they were looking at the beautiful scenery, they both agreed that it was the most awesome journey they had ever taken.Looking at the beautiful scenery :现在分词作状语(1) (absorb) in his work,Tom forgot to inform her that he had made a change to the plan.汤姆专心于工作,忘记了通知她他对计划做了一下改变。(2) ,the trees could grow taller.如果再多给一点时间,这些树会长得更高。(3)The scientist came in, (follow) by her assistant.(1)Wang Peng sat in his empty restaurant,feeling very frustrated.王鹏坐在他那空荡荡的餐馆里, 感到十分沮丧。(2)The number of patients has been declining, (suggest) that our severe measures have been effective.病人的数量一直在下降,表明我们的严厉措施已经奏效。(3)The young painter stood there quietly in the art gallery, famous painting那位年轻的画师静静地站在艺术馆里,欣赏着一幅名画。AbsorbedGiven more timefollowedsuggestingadmiring a现在分词与过去分词作状语的区别过去分词与句子的主语之间存在逻辑上的动宾关系,即表被动;现在分词与句子的主语之间存在逻辑上的主谓关系,即表主动。如:Asked why he was late, he cried. 被问到为什么迟到时,他哭了。Looking out of the window, I saw some students playing there.朝窗外望去,我看见一些学生在那边玩耍。Summaryrather than “与其……不如……;不愿”as引导非限制性定语从句 “正如……”过去分词/现在分词作状语with+宾语+宾补强调句型It is/was not until … that … “直到……才……”Key phrases and sentence patterns:Ⅰ.单句语法填空1.Generally speaking,these are political matters rather social matters.2. (give) the right kind of training,I’ll become a good singer.3.New social problems (arise) due to the unfair distribution of the social wealth so far.4.When they reached the top of the mountain,they were all out breath.5.When Titanic was sinking into the ocean,Jack put Rose on a wood, (leave) himself frozen to death in the icy water.6.As we all know,changes are bound (take) place when new systems are introduced.达 标 检 测当堂检测 基础达标演练thanGivenhave arisenofleavingto take1.She was positively beaming喜气洋洋的with______ (please).2.The group took an international airline flight to Europe and had a _______(please) trip there.3.We _____________________________高兴地获悉the outcome was much better than_________________________________我们预期4.The team didn’t anticipate _______(meet) with so many difficulties when doing the project.5._________________人们预料the research will have many different practical applications.6.I have _____________(一大堆)stuff to do this morning.7.He was occupied with handling the crisis危机 rather than __________ (enjoy) his holiday.8.I think Tom, rather than you, __(be) to blame for the accident.9.The report _____________ (highlight) the major problems facing society so far. pleasurepleasantwere pleased to learn thatour anticipation/we had anticipatedmeetingIt is anticipated thata whole bunch ofenjoyingishas highlightedⅡ.完成句子7.She likes jogging in the park.她喜欢在公园里慢跑,而不是散步。8.The old lady stood by the door, .这位老妇人站在门旁边,等着儿子回来。9. ,we made up our mind to go on with the training.由于受到了极大的鼓舞,我们决定继续训练下去。rather than walkingwaiting for her son to come backGreatly encouraged10.The beautiful scenery the moment they got off their car.他们一下车就惊叹于这美丽的景色。11.We would never win the battle against the new virus ___________________.如果没有广大群众的支持,我们不会取得与新病毒战斗的胜利。返 回took their breath awaywithout the support ofthe massesConsolidation_______________________, it is really freezing at the top of the mountain. (as引导非限制性定语从句)和我们预料的一样,山顶很冷。2. _______________________________________________ the villagersrealized how serious the pollution was. (not until 的强调句型)直到河里的鱼都死光了,村民们才意识到污染的严重性。3. The couple often take their children abroad for holiday, _____________________________________. (分词作状语)这对夫妻经常带着孩子到国外度假,让孩子接触不同的文化。Complete the sentences with phrases and sentence patterns we’ve learnt:As we have anticipatedIt was not until all the fish in the river died thatexposing them to different cultures4. It is those who are willing to give _____________________________________________________. (rather than)应该得到尊重的是那些愿意给予而不是接受的人。5. _____________________________ the new proposal, the associationpostponed it. (with + 宾语 + 宾补)由于很多人反对这项新提案,所以协会把它推迟了。6. _______________________, I can also work out this problem.(分词作状语)如果再给我一个小时,我也能把这道题算出来。Given another hourrather than receive that deserve to be respected.With a lot of people opposing 展开更多...... 收起↑ 资源预览