懂你英语L3U3Word文档格式.docx

1、8.Most insect also became extinct.9.This event happened over a period of several million years.C1.The causes of this extinctions event are still unknow.2.Possible cause includes large volcanic eruptions and global warming.3.Some scientists believe that there were several causes.4.They believe that a

2、 series of events caused the extinctions.5.Sciences are working to better understand what really happened.D1.In modern times, we humans face changing conditions.2.For humans to live we need clean air and clean water.3.Pollutions is now a growing problem around the world.4.Pollution poisons（毒药，污染） th

3、e air and water that we depend on.5.Polluted air makes people sick and afraid to go outside.6.Polluted water poisons our food supply.7.As a result, we never know which foods are safe to eat.8.Human being cannot live in a poisoned environment.9.Therefore, pollution is major threat to our exitance. E1

4、.Humans need temperature to be in a comfortable range.2.To be in a comfortable range means to be neither too hot nor too cold.3.With global warming global temperatures are rising.4.As temperatures rise, the polar icecaps will melt.5.As the polar icecaps melt, ocean levels will rise.6.Areas of some c

5、ountries will soon be under water.7.People will be forced to relocate from flood areas.F1.In nature, even small changes can sometime have large effects.2.Its difficult to predict（预测） whats going to happen.3.The entire ecosystem（生态系统） that we depended on is changing.4.Some of these changes are irreve

6、rsible（不可逆转的）.5.Irreversible changes cannot be undone because they cannot be reversed.G1.Lets hopes that humans are smarts enough to understand how the world is changing.2.With more understanding we can make better choices about what to do.3.We can face the challenges of pollution includes the globa

7、l warming.4.We need to do this before its too late.5.This planet Earth is our only home, and we need to protect it.6.（读或听）：We need to protect the environment that support us.L3U31/4vacabularyAnimal / appliances1.Mammals are covered by hair or fur have a backbone（脊椎） and are warm-blooded.2.All female

8、 mammals produce milk for their young.3.Reptiles are covered by scales and it includes snatch, lizards（蜥蜴）and turtles.4.Reptiles（爬行动物） have a backbone and are cold-blooded which means they often rely on external sources of heat.5.Birds are covered by feathers and are warm-blooded.6.Most birds can fl

9、y and many types of birds migrate（迁移，移动） great distances.7.Most insects such as ants and bees have a small 3-part body with 3 pair of legs.8.Some insect like mosquitoes（蚊子）， spread diseases that cause the deaths（死，毁灭） of many humans.9.Unlike animals, plants get the energy that they need from the sun

10、.10.Plants convert light energy along with carbon dioxide in the water into chemical energy.11.（听）mammals include some of the most intelligent animals on earth , such as elephants and human beings.12.（听） mosquitoes cause the deaths of more humans than any other animal.13.（听） some insects spread dise

11、ases that cause the deaths of many humans.14.（听） cold-blooded animal often rely on external sources of heat.15.（听） most mammals live on land, but some live in the sea.16.（听） insects such as ants and bees live in well-organized colonies.17.（听） insects dont have backbone, and most are cold-blooded.1.S

12、cales and rulers are used to measure weight and length.2.Units of weight include kilograms and pounds and units of length include centimeter and inches.3.These instruments are used to very large and very small objects.4.Telescopes（望远镜）are used by astronomers and microscopes（显微镜） are used by biologis

13、ts and doctors.5.These appliances are used in the kitchens of almost every home.6.Stoves are used to heat food and refrigerator are used to keep foods cool or cold.7.House hold tools like these are used to build and repair things.8.Hammers are used to pound in nails and screwdrivers are used to turn

14、 a screw.9.（听） we can used a telescope to see object that are far away.10.（听） if you need to pound in a nail , use a hammer.11.（读） Two inches is a little more than five centimeters.12.（听） Rulers are used to measure length.L3-U3-1/4 dialogueAnniversary/ expensive food1.Do you know what day it is toda

15、y?2.What do your mean? Is it a special day?3.Oh, so you dont remember?4.Remember what? Whats the special?5.Its our anniversary.6.We started dating a year ago today.7.Oh, really? Im sorry.1.Just a minute, what do you think this is?2.Oh, its a necklace.3.Do you like it?4.Yes, I do. Its lovely, especia

16、lly the read heart.5.May I put it on?6.No, let me do it.1.So, you did remember.2.Of course, I remember it.3.Its a very special day for both of us.4.I have something for you too.5.You do?6.Yes, but it will have to wait until later.7.Oh, I cant wait, tell me what it is.1.Can you guess what it is?2.Cou

17、ld you give me a hint?3.We went there six months ago.4.Oh, you met know Alfredos5.Yes, are you excited?6.You said you really like the food there.7.Yes, thats true.8.I also remember that the dessert.9.Do you?10.Yes, but, lets not talk about that.11.Lets now in surprised.练：1.She wont give him her gift

18、 until later.2.They arent going to talk about the dessert.3.He remembered that today is their anniversary.4.Do you know what today is?1.Thats restaurant looks nice.2.Yes, but it looks expensive.3.Lets go in and look at the menu.4.Wow, the menu looks great, especially the fish. 5.Yes, it looks good,

19、but look at those prices.1.Lets try somewhere else.2.Sometimes its ok to spend a little money.3.Yes, but these prices are a bit too high, dont you think?4.Yes, they are a bit high.5.But dont you think Im worth it? Lets enjoy ourselves.6.Uh, ok, if you put it that way.7.Lets see if we can get a table

20、.8.Im glad you have your credit card.9.I sure hope the food is good.10.Stop worrying, lets just enjoy.练1.he is worried about spending so much money.2.She likes the food choices, especially the fish.L3U32/4listeningQuickServe1.QuickServe is a home repair company.2.It provides quick reliable repair se

21、rvices to homes.3.QuickServe handles plumbing and electrical issues 24 hours a day.4.It also cleans the roofs, fixes internet connections and replaces broken windows.5.For a small fee, customers subscribe（订阅） to the service.6.Its main customers are the elderly, which means older people.7.Whenever cu

22、stomers have a problem, they can call for help.8.There is also a small service charge for each service call.（对于每一个服务呼叫也有少量的服务费用）1.The company was established 5 years ago, and is growing rapidly.2.It started in one city, but is now in five cities.3.The company plans to expand to 10 cities within the

23、next 24 months.4.In each city, there is a small central office in a low-rent area of the city.5.The central office handles the business, advertising, payroll（工资单） and billing.6.It also takes calls from customers, either online or by telephone.7.It takes calls 24 hours a day, seven days a week.1. 60%

24、 of the companys employees work from their homes.2. When a customer calls in to the central office, a service employee is contacted.3. The service employee then contacts the customer and sets up an appointment.4. These service employees are highly trained and provide excellent service.5. In emergenc

25、ies, such as a serious plumbing problem, service can be provided within an hour.6. One reason for this is that the service employees live in different parts of the city.7. They are not centrally located, so its quicker and easier for them to travel to a customers home.1.QuickServe has an excellent r

26、eputation（名声，名誉）2.Its prices are reasonable and its services are quick and efficient（有效率的）.3.The companys service employees are clean, polite and efficient（有效率的）.4.In this type of business, person to person contact is the key to success.5.With each satisfied customers, more customers subscribe（签署）.6

27、.Satisfied customers recommend Quickserve to their friends.7.This kinds of word-of mouth（口口相传） advertising is very cost effective.8.Cost effective（有效的） means that the results are good without paying a high price.9.In other words, quality service provides its own reward to the company.1.The company t

28、akes great pride（自豪的） in being honest with its customers.2.There are no hidden charges for their services.3.As a result, the number of customers in each city is growing rapidly.4.With the aging population, there are more elder people who need home repair services.5.These people need to have confidence in the service provider.6.They dont want to be cheated（欺诈）.7.These people dont mind paying a reasonable fee for high quality service.8.High quality service should be rewarded.9.（听） Customers never want to be cheated1.The company provides a range of service plans each with a different su