英语流利说懂你英语A+是全新一代的AI英语课，在手机上安装一个APP，就可以学习了。正式开始学习之前，流利说APP是通过AI技术对你进行一个五分钟的精准测试， 给出一份报告，推荐个性化定制课程。懂你英语A+是采用游戏闯关的模式学习，每天的闯关练习有三十分钟，课程内容有综合课、词汇课、语法课、听力课以及口语课，锻炼我们听说读写的综合能力。
流利说懂你英语A+设计了大量让用户主动开口说英语的机会。（1）跟读复述，闯关的过程中，我们需要主动按着小喇叭复述句子，练习口语。跟读过程中，APP会辨别你的发音是否准确，并为你打分，错误的地方会以红色标注出来，另外，还有正确的发音方法供你参考。（2）情景实战课，是该课程的强化输出环节，也是趣味性最强的一个环节，这里有设计日常生活、商务、旅游等多种话题，让用户与AI老师进行智能对话。
英语流利说
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如果你不方便查询价格，也可以先试听一下我们阿卡索的外教一对一免费体验课：点击领取阿卡索是非常值得您去选择的，不仅师资水平强大，而且价格方面非常实惠便宜，现在很多家长都带孩子去报名了，如果各位家长正在找英语培训机构的，不妨可以去试试阿卡索外教网哦，再做决定。
懂你英语 Level 3 - Unit 3
1/4 Listening
There are many forms of life on Earth, including human beings
Live exists in various of conditions
Some forms of life live in a watery environment like the oceans
Other forms of life can be found in very dry areas like deserts
However for any form of life to exist conditions must be right
When the conditions are not right That form of live will become extinct
To become extinct means to die out completely
Conditions must be right for life to exist
Millions of years ago there were forms of life that no longer exist
When conditions changed these forms of life died out
One extinction event happened about 250 million years ago
This was the largest extinction event of all time
Many forms of life became extinct
96 percent of all life in the oceans died out
Most insects also became extinct
This event happened over a period of several million years
The causes of this extinction event are still unknown
Possible causes include large volcano eruption and global warming
Some scientists believe that there were several causes
They believe that a series of events caused the extinctions
Scientists are working to better understand what really happened
In modern times we humans face changing conditions
For humans to live we need clean air and clean water
Pollution is now a growing problem around the world
Pollution poisons the air and water that we depend on
Polluted air makes people sick and afraid to go outside
Polluted water poisons our food supply
As a result we never know which foods are safe to eat
Human beings can not live in a poisoned environment
Therefor pollution is a major threat to our existence
Humans need temperatures to be in a conformable range
To be in a conformable range means to be nether too hot nor too cold
With global warming global temperatures are rising
As temperatures rise the polar icecaps will melt
As the polar icecaps melt ocean levels will rise
Areas of some countries will soon be under water
People will be forced to relocate from flooded areas
In nature even small changes can sometimes have large effects
It's difficult to predict what's going to happen
The entire ecosystem that we depend on is changing
Some of these changes are irreversible
Irreversible changes can not be undone
Let's hope that humans are smart enough to understand how the world is changing
With more understanding we can make better choices of what to do
We can face the challenges of pollution and global warming
We need to do this before it's too late
This planet Earth is our only home and we need to protect it
1/4 Vocabulary
Mammals are covered by hair and fur have a backbone and warm blooded
All female mammals produce milk for their young
Reptiles are covered by scales and includes snakes lizards and tortoise
Reptiles have a backbone and are cold blooded which means they often rely on external sources of heat
Birds are covered by feathers and are warm blooded
Most birds can fly and many types of birds migrate great distances
Most insects such as ants and bees have a small 3 part body with 3 pairs of legs
Some insects, like mosquitoes spread diseases that cause the deaths of many humans
Unlike animals plants get the energy that they need from the Sun
Plants can convert alone side carbon dioxide and water
Mammals include some of the most intelligent animals on Earth, such as elephants and human beings
Units of weight include kilograms and ponds And units of length include centimeters and inches
These instruments are used to observe very large and very small objects
Telescopes are used by astronomers And microscopes are used by microbiologist and doctors
These appliances are used in the kitchens of almost every home
Stoves are used to heat food and refrigerators are used to keep foods cool or cold
Household tools like these are used to build and repair things
If you need to pounding a nail use a hammer
2/4 Vocabulary
2017-06-26 12:46:19
What's in that big box you are carrying
it's a new desk
I just bought it and now I have to put it together
Do you need any help
No I don't think so
I just need to get my tools
I'll need a screwdriver and maybe a hammer
Don't forget to read the instructions
How were things going
I'm almost finished
Something doesn't look right to me
The right side is higher than the left side
Oh you're right
It looks like I put a couple of the screws into the wrong places
So now you'll have to take it apart
Great, and I thought I was almost finished
I told you to read the instructions
Did you read them
No I didn't read them
I hate to read instructions
I looked at them, but they were confusing
Well this is what happened when you don't
You were too impatient
Anyway what can I do to help you
Could you get another screwdriver and help me unscrew some of these screws
Ok, but next time please read the instructions
Do you ever look up to the sky and think about life and universe
I did when I was a kid
But I don't do that very much any more
Why do you ask
Sometimes I feel like I've lost in day to day details
Then when I look up at the sky I see the bigger picture
I appreciate things more, even the little things
You sound like a philosopher or a poet
I feel like that too when I was a kid
Don't you feel that anymore
No I don't In fact I try not to
When I think about things to deeply I get depressed
It's even a bit frightening
Really For me It's just the opposite Everything seems like a wonderful miracle
Doesn't that frightening you a bit
The universe is so large and we are so small
What are you realize is how little we understand
We just need to appreciate our lives and not get lost
Sometimes being lost isn't so bad
Do you know the expression "Ignorance is bliss"
Sure I've heard it many times
To be ignorant is to be happy
Maybe it's true
Maybe it's best to not know or think too much
No that's not for me
I wanna understand as much as possible
That's why I became a scientist
Well I respect your choice But it's not for me
If understanding is painful I'd rather not understand
3/4 Listening
2017-06-27 12:35:48
Henry is on a business trip
Yesterday he was supposed to fly from San Francisco to Shanghai
However things didn't turn out the way they were supposed to
In fact, nothing went way it was supposed to
Everything went wrong and he didn't get on his flight
As a result, he still in San Francisco
The following is a summary of what happened
Yesterday morning he got up as usual and had breakfast
Everything seemed to be fine and he was looking forward to the trip
He was just about to check out of his hotel when he felt a pain
It was a pain in his lower back
It was a dow pain at first not too bad
So he didn't worry about it and check out the hotel
Then he got on a shuttle bus and go to the airport
about half way to the airport the pain in his back started to get worse
It was a growing pain and he was beginning to worry
Soon it was difficult for him to sit in a seat
The pain was getting worse
He wanna to lie down
He started to sweat and breathe quickly
He was in real pain then
On a scale of 1-10 the pain was an 8
When the bus got to the airport the bus driver helped him get off
It was difficult for him to walk but he finally made it to the terminal
Inside the terminal he went to the mens bathroom
He went to the toilet but that didn't help
Instead of improving he felt dizzy and he threw up
By now he was wet from all the sweating
He knew he couldn't get on his flight
He used his phone to call the airline
He explained the situation and cancelled his reservation
Then he called 911 for emergency help
911 is the emergence number to call for help in United States
An ambulance arrived about 10 minutes after he called
By then he was in so much pain that he could barely walk
once inside the ambulance, they gave him oxygen to help him to breathe
But the pain was still terrible
Then they drove him to a hospital near the airport
Luckily the hospital was in his health plan
That means his health insurance will pay almost everything
Medical cost in United States are very high
Harry didn't have to stay at the hospital for very long
3/4 Vocabulary
2017-06-29 00:14:55
Solar energy is one of the cleanest and most plentiful sources of energy
Solar power depends on sunlight So in cloudy weather and at night no power is generated
Wind energy is non polluting but it's only useful in places where there is a lot of wind
Wind turbines convert the kinetic运动的energy of the wind into mechanical power
Nuclear energy is efficient and doesn't produce carbon gases as a waste product
The dangers of nuclear power include deadly radioactive waste products
A major source of energy comes from the burning of fossil fuels such as coal and oil
When we burn fossil fuels waste gases such as CO2 are produced
Fossil fuels remain the largest source of energy for most countries
Hydropower水电comes from the kinetic energy of falling water
Output is reliable and can be regulated to meet the demand, except during the period of dropped
We need to reduce the use of fossil fuels to produce energy
Here are some different types of words in English
Words that are nouns or pronouns are used to represent objects
A nouns or a pronoun can be a person an animal or a thing including an idea
Verbs are use to express actions, such as to sit down or stand up
We also use verbs to express relationships such as to love someone or to own something
We use adjectives to describe objects such as a tall building
Adjectives are use with nouns and pronouns but not with verbs
We use adverbs to describe actions such as to run fast or walk slowly
Adverbs express the quality of an action Such as how well or poorly something is done
We use conjunctions to connect things or actions, such as to read and write
Conjunctions include words such as and or because but and yet
3/4 Dialogue
2017-06-28 12:44:34
Hey I've got some news Some good news and some bad news
Okay, give me the bad news first
We are moving to a new office
When is this going to happen
We're supposed to move at the end of next month
How far away is the new office
We're not sure yet But it will mean a longer commute for most of us
The new office will probably beyond the other side of the city
The commute is already too long for me and I'm not going to change flats We just bought one
Anyway what's the good news
The good news is that we're going to expand
The company is growing so we gonna hire more people
Well I've got some news for you too
I hope it's good news
Well that depends on your point of view
I'm planing to start my own business
Why I thought you were happy working here
I like the work but I'm not learning anything new
I think I can do better on my own
I was planing to wait a few month
But now that the office is moving I'm ready to make the change
What is your wife think
She's in favor of it, and she'll help me
She's already designing a website
We'll work from home at first
So you really are serious about this
You're taking a big risk
Most new businesses fail
Yes I know, but if I don't do it now, I never will
I'm tired of working for others
I know what you mean
Don't tell anyone about this, okay
It's still a secret
Sure, I won't say anything to anybody
I'm sure this will come as a surprise to everyone
I'm sure changing offices will also come as a surprise to people
This is exactly why I want to work on my own
I don't like these kinds of surprises
You're right about that
When are you going to let people know
I'll make the announcements at the beginning of next month
4/4 Vocabulary
2017-06-29 13:14:19
When he was 15 he was sent to Florence
In Florence, he became an apprentice to a famous master painter
For the next few years Leonardo worked at his master's workshop
It wasn't long before his ability surpassed that of his master
Factories like this one allow harmful chemicals to get into the air or water
The British writer Jane Austen简·奥斯丁was born in England in 1775 one of seven children
She wrote some of the most popular love stories of all time
One of the most famous female rulers in history Cleopatra埃及艳后had affairs with Julius Caesar凯撒and later with Marc Anthony马克·安东尼
She was known for her great beauty and charming voice
Born in 1756 Mozart莫扎特composed and performed some of the worlds greatest classical music
He was the youngest of seven children and by the age of five he was already composing music
The son of a king Alexander the Great亚历山大大帝was a military leader who created one of the largest empire in ancient world
As a youths Alexander was taught by the Greek philosopher Aristotle亚里士多德
Mahatma Gandhi甘地was a 20th century's leader who use non-violence residence to lead India to independence
Gandhi dedicated his life to the pursuit of truth
4/4 Dialogue
2017-06-30 12:34:38
I'd like to speak with Mr Bennett please
I'm sorry but he's not here right now
Would you like to leave a voice message
It's urgent that I speak with him
It's emergency
Oh, I see What kind of emergency
It's very personal so I can't give you any details
Without more details, I'm afraid I can't give you his number
Give me your number and I'll let him know about your call
Then maybe he'll call you back will that be okay
Sure, my number is 5834987
It would be great if he could call me within the next half hour
That was a great dinner
Here put away your wallet I'll pay the bill
You paid last time, this time it's my turn to pay
Hey you don't have a job and I do let me pay
Thanks for the offer but I can handle it
Wait let's flip for it
Flip for it what does that mean
Do you see this coin
This side is heads and the opposite side is tails
I'll flip it up in the air
If it comes down with heads facing up I'll pay
If tails is up you can pay
Okay, that's fine with me
Look it's heads up so I'll pay
Thanks it's very nice of you
It's my pleasure
Do you want anything else sir
Would you like to see the desert menu
No thanks, I'm ready for the check
Here's my credit card
I'm sorry sir but we don't take credit cards
You're joking right
No sir, I'm not joking
Do you see that sign It says cash only
I didn't see it when I came in
I don't have enough cash to pay the bill
There's a bank down the street sir
If you let me hold your driver's license you can go and get the cash
Okay, I hope the bank is open
The bank is closed, but you can use the ATM to get the cash
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