人教版高二英语必修三Unit4Usinglanguagepoints.pptx

Unit4Language points speakingLearning aims1.To learn some important language points.2.To master the usages and be able to use them.3.To learn how to speak of the space.1.Then we were off.随后我们就启程了。随后我们就启程了。be off =set off 出发出发;动身动身 I am off today.我今天不用上班。我今天不用上班。We are off today.今天我们不上班今天我们不上班/今天我们不开张。今天我们不开张。shut off 关闭关闭get off 下车下车take off 脱下脱下turn off 关闭关闭pay off 付清付清;还清还清与与off相关的短语相关的短语:set.off 送行送行 kick off 踢球踢球 jump off 跳下跳下 give off 散发散发 show off 炫耀炫耀 get close to 靠近靠近,接近接近,指动态变化指动态变化 be close to 距距近近,指状态指状态 The school is close to the post office.2.When we get closer to the moon,we shall feel its gravity pulling us but it will not be as strong a pull as the earths.当我们更接近月球时当我们更接近月球时,就会感到月球的引力就会感到月球的引力 在拉我们。但是在拉我们。但是,月球的引力不像地球的月球的引力不像地球的 引力那么大。引力那么大。与与get相关的短语相关的短语:get along with 相处融洽相处融洽,进展等进展等get down to 开始认真对待开始认真对待,开始认真考虑开始认真考虑get on 上车上车get through 到达到达;通过通过;办完办完,花光花光(钱、时间等钱、时间等)。get to 到达到达get down to;get on;get through;get to;get over;get up 1.Dont talk too much.Lets _ working.2.Hurry up,or well be late to _ the bus.3.Its easy to _ the difficulty.4.I have _ a lot of papers.5.She managed to _ the village.get down toget onget overgot throughget to“as as”句式：句式：和和.一样一样 as+adj./adv.+as as+adj(+a+可数名词单数）可数名词单数）+as as+adj+(不可数名词或可数名词复数）不可数名词或可数名词复数）+as His bedroom is as clean as his sisters.Youve made as many mistakes as I have.as as 句式的句式的否定否定:“not as/so as”e.g.He can not speak English so fast as a native speaker.as+adj.+(n.)+as This film is _that one.这部电影和那部电影一样有趣。这部电影和那部电影一样有趣。We should plant trees _.我们应该尽可能多种树。我们应该尽可能多种树。This dictionary is _you think.这本字典不如你想象的那样有用。这本字典不如你想象的那样有用。John is _as Mike.约翰和迈克是一样聪明的学生。约翰和迈克是一样聪明的学生。as interesting asas many as possiblenot as useful asas clever a student1).A+be+倍数倍数n+as+形容词原级形容词原级+as+B3.But when I tried to step forward,I found I was carried twice as far as on the earth and fell over.3).A+be+倍数倍数n+形容词比较级形容词比较级+than+B A比比B大大(长、高、宽等长、高、宽等)n倍倍2).A+be+倍数倍数n+the+名词名词(size,length,width,height,depth,weight,amount)+of+B A是是B的的n倍倍倍数表达法：倍数表达法：这根绳子这根绳子(rope)是那根绳子的六倍长。是那根绳子的六倍长。A=nBA=(n+1)B 考例：考例：Our new library is _ the old one.A.four times as large as B.four times the size C.four times larger D.four times larger than that这条河是那条河的五倍宽。这条河是那条河的五倍宽。1._2._3._这块石头的重量是那块石头的三倍。这块石头的重量是那块石头的三倍。1._2._3._ 这颗树是那颗树的四倍高。这颗树是那颗树的四倍高。1._2._3._This river is five times as wide as that one.This river is four times wider than that one.This river is five times the width of that one.This stone is three times as heavy as that one.This stone is twice heavier than that one.This stone is three times the weight of that one.This tree is four times as high as that one.This tree is three times higher than that one.This tree is four times the height of that one.So,life is different on a spaceship.There is little gravity so that things float around.If you planned to travel to the moon,what matters would you meet with?Speaking and writingProblemsHow to cool youHow to breatheHow to eat and drinkHow to protect your skinHow to stop flying off the moons surfaceSpacesuitsSpace FoodSpace Buggy登月车登月车Space CameraMake a list of your ideas and take part in a class discussion to find the best ones.Use these words and expressions to help you.Please pay attention to .Please check that .You need .Dont forget to .Make sure that .Watch out for .Youd better .You must/mustnt .Please look at .Sample:S1:Lets think about what we would need to protect our skin if we visited the Moon.S2:Id take some skin cream.That works very well when we go to the sea.S3:Yes,but its going to be much too hot to put cream on your skin on the Moon.S4:Whats more you get direct heat from the sun.There are no clouds on the Moon to protect you.S3:Oh dear,and I also have to carry oxygen around with me everywhere because theres no oxygen on the Moon.S2:Why dont we carry the oxygen on our backs in a tank?S1:Good idea,but wont that hurt our skin?S4:I think it will.Why dont we wear a spacesuit which has the possibility of protecting your skin and helping you carry the oxygen very easily?S1:A very good idea.We also need some sunglasses as the sun will be as bad for our eyes as for our skin.S3:Thats right.The helmet of the suit can have sunglasses you can use.S2:How will the suit protect our skin?S4:Its so hot there so I suggest we design suit that can supply cold water so the wearer feels cool and hot water to warm us if we feel cold.S2:Great!So I wont need sun cream after all.Thats good!Brainstorming for writing What will we meet on the moon?when wherewhatwho problemssolve(how)Writing an outline(3m)Outline(main idea)The first paragraph(introduction)Body(your own ideas on the item)Conclusion(summing up)headingsumming upSample articlethe problempossible solutionsIf I visited the moon,here is a problem I might have:how to stop my food floating away.I would have to take all my food with me if I went to the moon.In the spaceship there is no gravity so the food would float around if it was solid.So I would make sure that it is specially made as liquid space food.It could be put in a tube and then I would be able to eat it more easily.Perhaps I would use a straw to eat with.It would solve the problem.how it would solve the problemSummary 1.Get close to与与be close to2.as+adj+n.+as3.倍数表达法倍数表达法Homework1.After class,you should listen to them again and sum up what you have learnt from them.Think about one question:What needs to be an astronaut?2.Collect passages about gravity.Prepare for speaking.