人教版高中英语必修一Unit3section4课件.ppt

1、Unit 3Travel journalmadeofcanruohanxingSection Section GrammarGrammar 现在进行时现在进行时1 1表示说话时正在进行的尚未完成的动作或状态。表示说话时正在进行的尚未完成的动作或状态。What are you doing now，Bob？鲍勃，你在干什么？Look！What are they watching？看，他们正在看什么？2 2表示现阶段正在进行的动作，虽然此刻动作不一定正在进行。表示现阶段正在进行的动作，虽然此刻动作不一定正在进行。George is working on a new book about storie

2、s in schools.乔治在写一本关于校园故事的书。I am helping my dad on the farm this summer vacation.这个暑假我在农场里帮爸爸。3 3现在进行时与副词现在进行时与副词alwaysalways，repeatedlyrepeatedly，constantlyconstantly，foreverforever等词连用时，强调不断重复等意，常常含有赞成、厌烦、生等词连用时，强调不断重复等意，常常含有赞成、厌烦、生气等情绪。气等情绪。He is always changing his mind.他总是改变主意。He is forever thi

3、nking of others.他永远都为别人着想。4 4表示按计划或安排在不久的将来要做或者预定要做的事情。这种表示按计划或安排在不久的将来要做或者预定要做的事情。这种结构中常用动作动词或去向动词，如结构中常用动作动词或去向动词，如arrivearrive，leaveleave，traveltravel，startstart，movemove，comecome，gogo，flyfly等。等。He is leaving for London next week.他下周要去伦敦。What time is the plane taking off？飞机什么时候起飞？表将来含义的其他表达方式有：(1

4、)will/shall do表达单纯将来，是对未来事情发生的“预见性”。可用于说话时才想到或决定的事。Tomorrow will be Sunday.明天就是星期天了。If you will go with me，Ill be very glad.如果你愿意与我一起去，我将非常高兴。(2)be going to do用来表示近期或经事先考虑要发生的事情以及有迹象表明将要发生的事。When are you going to set off？你什么时候动身？We are going to meet outside the school gate.我们打算在校门外见面。(3)be to do表示预定

5、、按计划或安排将要发生的动作。If you are to succeed，you must work hard.如果你想成功，你就必须努力。No one is to leave without permission.未经允许谁也不准离开。(4)be about to do意为“刚要，正要”，表示非常近的将来。be about to do不能和表示将来时间的副词连用。He is about to leave for Beijing.他很快要去北京。I was about to leave when my boss came.我正要离开，这时老板来了。be about to do常与并列连词whe

6、n引导的句子连用，意为“正要这时”。5 5一般现在时也可以表示将来。通常用于状语从句中或按规定一般现在时也可以表示将来。通常用于状语从句中或按规定(时时刻表、计划表、日程表等刻表、计划表、日程表等)将要发生的动作。将要发生的动作。Please come to see me when you are free.有空的时候来看我。The next plane leaves at 600 pm.下一次航班将在下午6点起飞。The new term starts on August 29th.新学期将于8月29号开始。课时作业课时作业点击进入链接点击进入链接JOURNEY DOWN THE MEKON

7、GJOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLANPART 1 THE DREAM AND THE PLANMy name is Wang Kun.Ever since middle school，my sister Wang Wei and I have dreamed about taking a great bike trip.Two years ago she bought an expensive mountain bike and then she persuaded me to buy one.Last year，she v

8、isited our cousins，Dao Wei and Yu Hang at their college in Kunming.They are Dai and grew up in western Yunnan Province near the Lancang River，the Chinese part of the river thatis called the Mekong River in other countries.Wang Wei soon got them interested in cycling too.After graduating from college

9、，we finally got the chance to take a bike trip.I asked my sister，“Where are we going？”It was my sister who first had the idea to cycle along the entire Mekong River from where it begins to where it ends.Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shor

10、tcoming.She can be really stubborn.Although she didnt know the best way of getting to places，she insisted that she organize the trip properly.Now I know that the proper way is always her way.I kept asking her，“When are we leaving and when are we coming back？”I asked her whether she had looked at a m

11、ap yet.Of course she hadnt；my sister doesnt care about details.So I told her that the source of the Mekong is in Qinghai Province.She gave me a determined lookthe kind that said she would not change her mind.When I told her that our journey would begin at an altitude of more than 5,000 metres，she se

12、emed to be excited about it.When I told her the air would be hard to breathe and it would be very cold，she said it would be an interesting experience.I know my sister well.Once she has made up her mind，nothing canchange it.Finally，I had to give in.Several months before our trip，Wang Wei and I went t

13、o the library.We found a large atlas with good maps that showed details of world geography.From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain.At first the river is small and the water is clear and cold.Then it begins to move quickly.It becomes rapids as it pa

14、sses through deep valleys，travelling across western Yunnan Province.Sometimes the river becomes a waterfall and enters wide valleys.We were both surprised to learn that half of the river is in China.After it leaves China and high altitude，the Mekong becomes wide，brown and warm.As it enters Southeast

15、 Asia，its pace slows.It makes wide bends or meanders through low valleys to the plains where rice grows.At last，the river delta enters the South China Sea.沿湄公河而下的旅程沿湄公河而下的旅程第一部分第一部分 梦想与计划梦想与计划 我叫王坤。从中学时代起，我和我姐姐王薇就一直梦想做一次伟大的自行车旅行。两年前，她买了一辆昂贵的山地自行车，然后她说服我也买了一辆。去年，她去看望了我们在昆明读大学的表兄弟道伟和于航。他们是傣族人，在云南省西部靠近

16、澜沧江的地方长大，澜沧江就是在其他国家被称为湄公河的在中国的那一段河流。王薇很快使他们也对骑自行车感兴趣了。大学毕业后，我们终于有骑自行车旅行的机会了。我问姐姐，“我们要去哪里？”正是我姐姐提出骑自行车从湄公河源头一直到它的尽头的想法。现在她正在安排我们的旅行时间表。我很喜欢我的姐姐，但是她有一个严重的缺点。她有时真的会很固执。尽管她对到某些地方的最佳路线并不清楚，她还是坚持认为自己把这次旅行安排得很妥当。如今，我了解了她总是一意孤行。我老是问她，“我们什么时候动身？什么时候回来？”我问她是否看过地图。当然，她并没有看过；我姐姐是不会在意细节问题的。于是，我告诉她湄公河的源头在青海省。她给了我

17、一个坚定的眼神表明她是不会改变主意的。当我告诉她我们的旅程将从海拔5 000多米的地方开始时，她似乎显得很兴奋。我告诉她那儿空气稀薄，呼吸困难，而且天气很冷时，她却说那将是一次有趣的经历。我很了解我的姐姐。一旦她下了决心，什么也不能使她改变。最后，我只得让步。在我们旅行前的几个月，我和王薇去了图书馆。我们找到了一本大型地图册，里面有一些世界地理的明细图。从地图上可以看到，湄公河发源于西藏一座山上的冰川。起初，河面很小，河水清澈而冷冽。然后，它开始快速流动。它穿过深谷时就变成了急流，流经云南省西部。有时，这条河进入宽阔的峡谷形成了瀑布。我们俩惊奇地发现这条河有一半是在中国境内。当流出中国，流出高

18、地后，湄公河就变宽了，变暖了，河水也变成了黄褐色。当它进入东南亚后，流速减缓。河水蜿蜒缓慢地穿过低谷，流向生长稻谷的平原。最后，湄公河三角洲的各支流流入南海。JOURNEY DOWN THE MEKONG JOURNEY DOWN THE MEKONG PART 2 A NIGHT IN THE MOUNTAINS PART 2 A NIGHT IN THE MOUNTAINSAlthough it was autumn，the snow was already beginning to fall in Tibet.Our legs were so heavy and cold that th

19、ey felt like blocks of ice.Have you ever seen snowmen ride bicycles?Thats what we looked like！Along the way children dressed in long wool coats stopped to look at us.In the late afternoon we found it was so cold that our water bottles froze.However，the lakes shone like glass in the setting sun and l

20、ooked wonderful.Wang Wei rode in front of me as usual.She is very reliable and I knew I didnt need to encourage her.To climb the mountains was hard work but as we looked around us，we were surprised bythe view.We seemed to be able to see for miles.At one point we were so high that we found ourselves

21、cycling through clouds.Then we began going down the hills.It was great fun especially as it gradually became much warmer.In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass.At this point we had to change our caps，coats，gloves and trousers for Tshirts

22、 and shorts.In the early evening we always stop to make camp.We put up our tent and then we eat.After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake.At midnight the sky became clearer and the stars grew brighter.It was so quiet.There was almost no windonly the f

23、lames of our fire for company.As I lay beneath the stars I thought about how far we had already travelled.We will reach Dali in Yunnan Province soon，where our cousins Dao Wei and Yu Hang will join us.We can hardly wait to see them！沿湄公河而下的旅程沿湄公河而下的旅程第二部分第二部分 山中一宿山中一宿虽然是秋天，但是西藏已经开始下雪了。我们的腿又沉又冷，感觉就像冰块。

24、你看见过雪人骑自行车吗？我们看上去就是那样。在路上身穿长羊皮大衣的孩子们停下来看我们。在下午晚些时候我们发现天气太冷了我们的水杯都结冰了。可是，湖面在落日的余晖下像镜子一样发光，看上去美极了。王薇像平常那样骑在我前面。她非常可靠，我知道我不用鼓励她。上山很艰难，但是当环视四周，我们惊讶于眼前的景色。我们似乎能够看到数里之外。到了某一点我们的位置太高了我们发现我们正在云里骑车。然后我们开始骑车下山。这非常有趣，尤其是天气变得越来越暖和。在山谷中我们发现很多色彩鲜艳的蝴蝶在我们周围飞来飞去，并且我们看到很多牦牛和羊正在啃食青草。在这里我们要把帽子、外套、手套和裤子换成衬衫和短裤。刚到傍晚我们就要停下扎营。我们安好帐篷然后吃饭。晚饭后王薇倒头便睡，但是我却睡不着。午夜时分天空变得晴朗了，星星变得更加明亮了。周围如此安静。几乎没有风只有我们的营火做伴。躺在这星空下我在想我们已经走了多远了。我们很快就要到云南大理了，在那里我们的表兄道伟和于航会加入我们。我们迫不及待地想要见到他们。课时作业课时作业点击进入链接点击进入链接