大学英语u51.1第五单元电子教案

授课单元教案

Unit5 Our Weather and ClimateUnit Goals:

What You Should Learn to Do1. Understand weather forecast of:global weather conditionslocal weather reports

2. Talk about weather changes:

temperature, wind, rain, shower, snow, etc.3. Talk about the weather to start a conversation4. Make comments on weather conditions and showlikes or dislikes

5. Write a weather reportWhat You Should Know About1. The way weather is forecast2. Celsius and Fahrenheit

3. Use of tenses: simple past and present perfectSection ⅠTalking Face to Face（2课时）

教学⽬的，要求：能熟读对话，认知单词，掌握基本句型。

重点与难点：掌握课⽂所给的句型和短语；根据提⽰语境灵活运⽤句型和短语。

教学⽅法与⼿段：在学习5个短⼩精练，⽣动有趣，针对性强，主题突出的⼩对话之后分别设定了⼀个相关的交际“任务”。教师引导学⽣根据上⽂样例及配套的拓展教程中Data Bank 所提供相关语⾔材料进⾏⼝头交际模仿套⽤练习，取得边学边⽤的效果。

所需的教学仪器和设备：教学课件，多媒体设备授课主要内容：

Step one: Imitating Mini-talks

1.Speak and Recite: Works in pairs. Practice the following mini-talks about greeting andintroducing people.

Step two: Speak and Perform

2.Work in pairs and act out the tasks by following the above mini-talks.Step three: Study and Imitate

Step four: Following Sample Dialogues

实⽤英语⼝语：unit5，unit8学⽣分组进⾏英语⼝语对话练习。

⼩结，作业布置：

1.Students practice the dialogues in groups.

2.Give students several minutes to prepare short conversations in pairs by simulating the fivesmall dialogues.3.Role-play

4.Put-in-use exercises

5.Assignment for this section: Pair work: Create four situations to thank or congratulate afriend.

SECTION II Being All Ears（1课时）

教学⽬的，要求：能在规定时间内听懂录⾳材料，并完成相应的练习。重点与难点：利⽤听⼒材料提⾼学⽣听⼒⽔平，教授听⼒技巧并要求学⽣掌握。

教学⽅法与⼿段：在“说”的基础上，围绕同⼀话题进⾏听⼒训练，通过听的内容，使听说训练的范围进⼀步扩⼤。教材从“听——判断”、“听——记录”、“听——归纳”、“听——阅读”四种技能⼊⼿，重点培养学⽣综合理解语⾔内容的能⼒。所需的教学仪器和设备：教学课件，多媒体设备授课主要内容：

1.Give students a few minutes to read through the printed materials for each listening item.2.Listen to the tape for the fist time without looking at the book.

3.Play the tape for a second time with a pause after each sentence, and ask the students to takenote of the key words.

4.Play the tape for the third time, and ask students to simultaneously repeat the passage whilethey are listening.

Do all the exercises in the section.

实⽤英语⼝语：unit5，unit8学⽣分组进⾏英语⼝语对话练习。⼩结，作业布置：1.Listen and Respond2.Listen and Decode3.Listen and Complete4.Listen and Match

SECTION III Trying Your Hand (3课时)Writing Sentences and Reviewing Grammar

⼀般过去时

1.概念：过去某个时间⾥发⽣的动作或状态；过去习惯性、经常性的动作、⾏为。

2.时间状语：ago, yesterday, the day before yesterday, last week, last(year, nig ht, month…), in 19, just now, at the age of5, one day, long long ago, once u pon a time, etc.3.基本结构：be动词；⾏为动词的过去式

4.否定形式：was/were +not;在⾏为动词前加didn't，同时还原⾏为动词。

5.⼀般疑问句：was或were放于句⾸；⽤助动词do的过去式did 提问，同时还原⾏为动词。6.例句：She often came to help us in those days.I didn't know you were so busy.现在完成时

1.概念：过去发⽣或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。

2.时间状语：yet,already,just,never,ever,so far,by now,since+时间点，for+时间段，recently, lately, in the past few years, etc.3.基本结构：have/has + done4.否定形式：have/has + not +done.5.⼀般疑问句：have或has。6.例句：I've written an article.

The countryside has changed a lot in the past few years.Write and Describe a Picture

Key:Janet is planning to go to a picnic with her former high school classmates at the weekend. Since they haven't met eachother for half a year, Janet feels excited about this big event. However, she worries a lot about the weather. In July herrelatives came to visit her and they went out to have a barbecue. They were going to enjoy themselves, but to their

disappointment, the party was spoiled by heavy rain. They all felt bored and irritated. Now she is dialing 121 in order to getthe recent weather information. This time she is going to feel happy with the reunion.实⽤英语⼝语：unit5，unit8学⽣分组进⾏英语⼝语对话练习。⼩结，作业布置：

1.Do the grammar exercises in the Workbook.2.Understand and write weather report

SECTION IV Maintaining a Sharp Eye（4课时）

教学⽬的，要求：看懂⽂章，掌握重点词语、短语和句型；通过阅读了解⽂化背景知识

重点与难点：对阅读材料的阅读理解，通过阅读提⾼阅读技巧，并学会灵活运⽤所学词语。教学⽅法与⼿段：培养学⽣的阅读能⼒，尤其是坚持在阅读教学中培养学⽣使⽤英语的能⼒。其中⼝语化⽂章较多，注重扩⼤学⽣词汇量，提⾼学⽣英语语⾔知识和交际技能。

所需的教学仪器和设备：教学课件，多媒体设备授课主要内容：PASSAGE LEARNING

Information Related to the Reading PassageClimate Change and Global Warming

The term climate change is often used interchangeably with the term global warming, but “climate change”is growing inpreferred use to “global warming”because it helps convey the fact that there are other changes in addition to risingtemperatures.

Climate change refers to any significant change in measures of climate (such as temperature, precipitation, or wind) lastingfor an extended period (decades or longer). Climate change may result from: natural factors, such as changes in the sun'sintensity or slow changes in the Earth's orbit around the sun natural processes within the climate system (e.g. changes inocean circulation);human activities that change the atmosphere's composition (e.g. through burning fossil fuels) and the landsurface (e.g. deforestation, reforestation, urbanization, desertification, etc.)

Global warming is an average increase in the temperature of the atmosphere near the Earth's surface and in the troposphere,which can contribute to changes in global climate patterns. Global warming can occur from a variety of causes, both naturaland human induced. In common usage, “global warming”often refers to the warming that can occur as a result of increasedemissions of greenhouse gases from human activities.Greenhouse Gases:

For over the past 200 years, the burning of fossil fuels, such as coal and oil, and deforestation

have caused the concentrations of heat-trapping “greenhouse gases”to increase significantly in our atmosphere. Thesegases prevent heat from escaping to space, somewhat like the glass panels of a greenhouse.

Greenhouse gases are necessary to life as we know it, because they keep the planet's surface warmer than it otherwisewould be. But, as the concentrations of these gases continue to increase in the atmosphere, the Earth's temperature is

climbing above past levels. According to NOAA and NASA data, the Earth's average surface temperature has increased byabout 1.2 to 1.4oF in the last 100 years. The eight warmest years on record (since 1850) have all occurred since 1998, withthe warmest year being 2005. Most of the warming in recent decades is very likely the result of human activities. Otheraspects of the climate are also changing such as rainfall patterns, snow and ice cover, and the sea level.

Scientists are certain that human activities are changing the composition of the atmosphere, and that increasing the

concentration of greenhouse gases will change the planet's climate. But they are not sure by how much it will change, atwhat rate it will change, or what the exact effects will be.PASSAGE LEARNINGLanguage Points

1 Explanation of Difficult Sentences

1.(Para. 1) Climate change may be a big problem, but there are many little thingswe can do to make a difference.

Analysis: May can be used to introduce concession in putting forward an argument. Translation:⽓候变化可能是⼀个⼤问题，但是我们仍然可以做许多⼩事来影响它。Example: The goal you set may be nice, but it is too difficult to reach.2.(Para. 1) As we have learned, these greenhouse gases trap energy in theatmosphere and make the Earth warmer.

Analysis: As is often used to introduce an indicator of the information source,such as in as we have learned. Similar structures are: as the sayinggoes, as everyone knows, as you know, as you put it, etc.

Translation:如我们所知，这些温室⽓体把能量困锁在⼤⽓中从⽽使地球变暖。Example: As the famous Adidas ad goes:impossible is nothing.

3.(Para. 3) By turning off lights, the television, and the computer when you arethrough with them, you can help a lot.

Analysis: By is followed by a gerund, introducing a prepositional phrase of

manner. Note, by is not necessarily always translated as “通过”. Translation:你⽤完电灯、电视或电脑就随⼿关闭，那你就是帮了⼤忙！

Example: You can save energy by sometimes taking the bus, riding a bike, or simply walking.4.(Para. 8) One of the ways to reduce the amount of greenhouse gases that we putinto the air is to buy products that don't use as much energy.

Analysis: Two that-clauses are used to serve as post-modifiers of nouns: the firstone is that we put into the air, modifying greenhouse gases; The second

that-clause is that don't use as much energy, modifying products. Note:In translation, the noun phrase products that don't use as much energycan simply be translated into “节能产品”, instead of “不消耗那么多能量的产品”。

Translation: 减少排放到空⽓中的温室⽓体的⽅法之⼀就是购买节能产品。Example: Join a national or local environmental group that is fighting the climatecrisis every day.2 Important Words

1.trap v. store (energy, gas or water, etc.) so that it cannot escape 使困留在某处e.g. A filter traps dust from the air.

The fabric of the clothes can trap body heat and keep you warm.2.absorb v. take in, suck up (liquid, heat, knowledge, etc.)吸收，吸取（液体、热量、知识等）

e.g. She absorbed greedily anything she can get a hold of in the library.The material absorbs heat from the sun and releases it when needed.

3.stuff n. things such as substances, materials, or any small objects referred to in general(不必详细说明的)东西

e.g. There is a lot of stuff about it in the newspaper.Get your stuff and go right away.

4.stand-by n. readiness for duty 待机，备⽤，待命e.g. The soldiers are on stand-by, ready to leave any time.Eggs are a great stand-by in the kitchen.

5membership n. being a member of (an organization) 会员e.g. He lost his membership card and was denied access.

The gym offered some special programs and its membership swelled all of a sudden.6.swell v. (number or amounts) grow bigger; expand (数量) 增加，增长e.g. It took only less than half a year for the housing price to swell totwice its original.

The population swelled during the mid-1970's.

实⽤英语⼝语：unit5，unit8学⽣分组进⾏英语⼝语对话练习。⼩结，作业布置：1.Read the new words

2.Check the students’ previewing task by asking them about the main idea of the text and somequestions in the Read and Think exercise.3.Analyze the text in detail

4.Assignment: Do the translation exercise of passage.

SECTION V Living in Tianjin / SECTION VI Appreciating Culture Tips (2课时)教学⽬的，要求：看懂⽂章，掌握重点词语、短语和句型；通过阅读了解⽂化背景知识

重点与难点：更深地了解天津的风⼟⼈情，旨在加强实⽤交际能⼒的同时，将蕴含的⽂化底蕴揭⽰出来，引导学⽣学习和体味这些语⾔⽤法的精华。

教学⽅法与⼿段：联系天津的实际情况提供学⽣较⼤的阅读⾯，注重提⾼学⽣的理解能⼒。所需的教学仪器和设备：教学课件，多媒体设备授课主要内容：

以短⽂或对话的形式介绍天津的社会经济、风⼟⼈情，增强学⽣学习英语的针对性和实⽤性，激发学⽣的学习兴趣。通过公司的商标，座右铭，名句来指导学⽣理解，翻译。教师应就有关背景知识进⾏简要的归纳，并指导学⽣理解。

实⽤英语⼝语：unit5,unit8学⽣分组进⾏英语⼝语对话练习。⼩结，作业布置：1.深⼊了解天津

2.要求学⽣掌握各种公司著名的⼴告，商标，宣传语句，增加学⽣的知识层⾯。