In summer people often lie under some tall trees to enjoy the cool.

In the boxing match one of the boxers struck his rival a blow under the ear.

He found a cat and its young sleeping soundly under his bed.

A torrential stream flows under the steep precipice all the year round.

Submarines always moves under the sea，they come up to the surface only for supplies.

Through geological changes for thousands of years，the ancient palace is now under the stratum.

That old sword still shines brilliantly though it has been buried under the sandbank for ages.

His injury is under the skin，so it is difficult to cure.

The poor old man cannot live long under the burden of worry and pain.

That stout peasant walks quickly under the weight of a large bag of grain.

Under such a heavy load，the cart cannot be dragged on quickly.

Some students are under physical training，they are going to take part in a sports meet.

A patient is under operation in the operating room.

No smoking，those who violate are under penalty of five yuan.

To make ready for spring sowing，the land is under the plough of agricultural machines.

Many new railway lines are under construction.

Their suggestion is now under consideration and will be carried out soon.

This bill is under examination and approval in the parliament.

The government is under the control of the king.

Emigrants are still under the protection of their own country though they are all abroad.

All municipal engineerings should be put under the surveillance of the local government.

They bear witness to the fact under oath.

We asked all witnesses under the pledge of telling the truth.

Both sides will keep to the articles under an agreement.

They told us that these subjects came under the heading of rhetoric.

Monkeys，apes，orangutans etc are dwelt with under the species of primate.

Planets，stars and galaxies are all heavenly bodies，the study of them is put under the scope of astronomy.

A millionaire does not want to show his real name，he often appears under a false name.

Prince Edward travelled to a mountainous village under an incognito.

A student is often absent from school under the pretext of illness.

He asked me to donate under the pretence of collecting for charity.

He will display his ability to the full under the circumstances.

We are willing to cooperate with them under such conditions.

Under no circumstances will we do things against our conscience.

Imperialists began to invade China under the late Qing Dynasty.

A captain is under a major in the army.

A county is under a province in Chinese administrative division.

Children under eight years old should not come to the street unless accompanied by adults.

We estimate the piece of land under three mu in area.

That pedlar would not sell his goods under five yuan.

This bed is too hard to lie on，you had better put a cotton-padded mattress under.

Such inappropriate thinking must be kept under.

This equation may also be solved as under.

George was born under a lucky star，each time he is involved in trouble，someone will come to his rescue.

After struggling against a rainstorm，the ship is fairly under way.

Tom feels under the weather these days，he has to ask for leave and rest at home.

Andy is a straightforward young man，he is apt to get hot under the collar when he sees things dealt with unfairly.

Our neighbour’s mental illness grows worse day by day，he has to be kept under restraint to accept treatment.

That housewife went out shopping，her house was left under the care of a neighbouring aunt.

We have ever been under an obligation to that kind man，we will never forget his kindness.

If someone is under a bias against us，we should make explanation patiently and repeatedly until the bias is removed.

Mediation cannot be carried out successfully if the mediator is under a bias towards one side and against the other of the dispute.

Daniel is under a cloud in our company，he decides to resign and change for a new job.

Henry’s little brother wants to go to school，but no school would accept him because he is under age.

A shopkeeper is under an accusation，for his shop is involved into contract disputes.

Our manager is under an engagement to hold a business negotiation with a company，the date and place for negotiation have been determined.

Grandma tells a myth to her granddaughter，it goes that a princess was under a spell of a wicked witch，who wanted to kidnap the princess to a faraway land.

Mrs Black is the master of her family，her husband is under her girdle and does everything she tells him.

They were under no delusion as to the state of affairs and the counter-measures they made were also correct.

These witnesses are all under oath so their testimony is believable.

It is under the ban that children under six go to busy roads without the company of adults.

Some people are under the delusion that success may be acquired with one’s hands down and needless of any effort but Dick does not agree with them，he is of the opinion that success can only be achieved through hard and persevering exertions.

An ancient painting is under the hammer，artists and connoisseurs all go to the auctioneer’s to have a look.

An old man has drunk too much，he is now still under the influence of drink.

After his father’s death Joseph is under the necessity of making a living for himself.

Many warehouses were under water after a heavy rain.

That unfortunate man feels sad about his fate，for he has been under water for half his lifetime.

These kind-hearted people are born under a fortunate star because they are safe and sound all their life and enjoy happy old age.

All good things should be recommended and all evil things should be brought down.

These phenomena may be brought under two classifications，one belongs to the field of physics and the other that of chemistry.

A man should be able to bring himself under control，that is，to put his emotion under control.

He went to a country fair，carrying a bundle of firewood under his arm.

When he entered a dark room，a strange noise came under his notice，he lighted a candle and found that it was a cat.

This new substance often changes its colour when dissolved in sulphuric acid，this phenomenon has come under the chemist’s observation.

Such an expense should not be calculated into our production cost，it should come under administrative expenditure.

Their new and original design has come under our chief engineer’s notice，he will discuss it with them some day.

A collector of antiques wants to sell his ancient painting，so the painting comes under the hammer.

The patient’s illness cannot be cured with medicine，it must come under the knife.

Through appraisal of many authoritative biologists，this animal should fall under a new biological species.

Never talk about a man’s failing to his face or else you will get under his skin.

There are numerous reefs under that sea area，ships sailing there should take great care not to strike reefs and go under.

Enterprises may go under if not managed and administered properly.

These new appliances may go under the name of household electronic products.

A brave man climbed down a steep precipice hand under hand along a thick old vine.

When Kevin visited his old friends，he had his feet under their mahogany.

Our engineer hides his light under a bushel，he never talks to others about his distinguished technique in the most advanced branch of science.

Teachers have told the parents of some naughty pupils that their children need to be kept under sternly.

It is a common habit of scientists to keep under observation any abnormal phenomenon coming under their eyes.

He keeps this information under his hat because it is his company’s business secret.

Lewis is a young man with indomitable will，he has met with numerous difficulties and hardships but never knuckles under to them.

Donald labours under lack of professional knowledge in his work，so he goes to an evening university to study.

I know that I am rather lame under the hat，I have to study hard to keep up with my friends.

Our neighbour is a single man，if he goes out doing something，he often lays the key under the door.

In ancient times，vassal states are laid under tribute every year.

A neighbour of mine lies under bullying，we all help him to resist.

The man lives under the cat’s paw because he loves his wife and wishes to obey her words.

People are under the impression that no pains，no gains，we are of the same opinion.

Through hard struggle of weak and small countries，imperialists came under the yoke at last.

Smoking and drinking are both placed under a ban in our school because they are detrimental to our health and mind.

An infectious disease was prevalent near an African port，the Customs placed that port under an embargo.

After wandering half their lifetime，these vagabonds put their shoes under the bed at last.

Oliver has ever been put under an obligation to a kind man，he always tries to find a chance to repay him.

During their stay in town，they put their legs under their friend’s mahogany.

Time is nearly up，people all put the skids under them to finish their work more quickly.

Owing to a wholesale dealer’s unreasonable prices，retail dealers put him under a boycott and buy their goods somewhere else.

A window was broken，mother suspected her naughty child had done it，so she put him under the screw.

It is against the regulation for ships to sail under false colours without special permission.

These stores do business sincerely，they never sail under false colours.

It is the scholar’s habit to score under epigrams and proverbs when he meet with them in articles and books.

A naughty boy broke a cup，he shoved this under the carpet so as to avoid mother’s blame.

Our director was snowed under with invitations and social intercourses，he had little time to attend to his own job.

Two boys speak something under their breath in a corner，we think they must be talking over which film they will see next week.

These young people are all fresh from school，they have no experience about social affairs，we will take them under our wing when necessary.

The chief accountant is an expert in financial affairs，he takes us under his guidance so as to improve our professional knowledge.

In the sixteenth century，Queen Elizabeth of England often took some famous writers under her patronage and promoted them as nobles.

No one has ever lived in that vacant room long since，the furniture in it is under a cloak of dust.

There happened in the office a disreputable thing，all office workers who worked in that office was under a cloud before the whole truth came out.

Barbara is under a cloud，something unpleasant must have happened to her.

Many beneficial proposals were put forward at the meeting，and all of them are now under active consideration.

Although they are under adversity，they are still optimistic and cheerful and never discouraged.

We will offer our assistance and help them to overcome the difficulty under all circumstances.

This firm is involved in financial disputes and falls under an accusation of unfulfilment of their contract.

It is said that in ancient times，officials often went out under an incognito to investigate condition of the people.

We should try every way to do beneficial things and never do such things as harm other people under any circumstances.

That international exhibition is hold under the auspices of foreign trade departments.

A brave captain ordered his sailors to sail his schooner across the roaring sea under bare poles.

Honest people are open and aboveboard，they never do inappropriate deeds under colours of reputable reasons.

In the eighteen century，French army under command of General Napoleon conquered many countries in Europe.

Proposals put forward by technical staff are now under consideration in the technique department.

A skyscraper of one hundred storeys with the height of three hundred meters is now under construction in that metropolis.

I will speak under correction about this subject.

Black clouds blot out the sky，thunder and lightning rumble overhead，it is going to rain heavily，we must put our car under cover.

Wild animals often come to the village under cover of darkness at night.

A question is under debate，people vie with one another to express their opinions.

Some opinions are under deliberation and some others have been adopted and put to practice.

A problem is under discussion，it is about the construction of a new railway line.

Through hard work of our staff members，the factory has fulfilled its export task even under existing conditions.

Under favour，I think we should bring more barren hills under cultivation，so that we can harvest more grain.

Owing to excellent management and administration，the corporation’s business was carried on under favourable auspices.

They have achieved their goal under favourable conditions.

Please walk carefully，it is wet and slippery under foot.

A gentleman came to see you this morning when you were absent，he is under forty，tall and thin，with glasses on.

This given plan can only be carried out under given circumstances，if there is a change in circumstances，the plan will change accordingly.

This is a cargo ship，the goods under hatches are all household commodities.

What under heaven does this mean? I cannot solve even such easy equations.

It is too hot to travel in the desert in the daytime，so the camel train rests by day and walks under night.

We should always be faithful to others and under no circumstances should we be dishonest to them.

Although Henry was in difficulty，he would under no consideration give up his hope.

If something inappropriate happens under our eyes，we should not ignore it but speak out our opinion from the sense of justice and check it up.

Our teacher likes these excellent pupils so much that he often praises them under their parents’ very nose.

Girls sat in a corner exchanging confidences with one another under their breath.

He always puts his dictionaries and reference books under his hand when he is writing.

Our general manager gives out this order under his own hand and seal，so the whole company would act in accordance with it.

The engineer designs his new machine under his hat，no one knows what machine it is.

This ambitious young man achieved his goal all under his own steam.

After wandering about all his lifetime，the old sailor is now enjoying his remaining years under his own vine and fig trees.

Under ordinary circumstances we can complete such a task in three days，but now we try to complete it sooner.

No damage to public installations under pain of double compensation and written self-criticism.

No parking within the park under penalty of a heavy fine.

The man loves his wife and wishes to live under petticoat government.

Under pressure of our company’s protest，that firm has agreed to fulfil the contract.

Little Tom obeyed his mother’s words under protest，making faces behind mother’s back.

This swimming pool is closed for some time，it is under repair.

Dick’s parents have gone abroad on business，he is now under his relative’s roof.

Our schooner sets off early this morning，she is now under sail on the roaring sea.

Their credentials have been under seal，they can identify them anywhere they go.

Such a problem may recur under similar circumstances.

Their ship is under steam，with their captain directing its way on the deck.

Many big ships take shelter in a small harbour under stress of weather.

Under the surveillance of their teacher，these naughty boys are doing their homework.

Machinery without proper maintenance will become rusty under the action of moisture in the air.

That old man behaves himself prudently，he thinks thrice before doing anything under the apprehension of making mistakes.

Our director managed our firm with careful consideration under the apprehension that he should make a loss in business.

Charity institutions appeal to us to make magnanimous contributions under the banner of mercy and kindness，we all make donations eagerly in response to them.

My neighbour keeps his nose to the grindstone，for he is under the burden of providing for a large family.

Little Tom was put under the care of his uncle after his parents went abroad.

This museum was under the care of an old naturalist，who had just been transferred here from a research institute.

George’s father suddenly died，George had to discontinue his studies and get a job to support his family under the circumstances.

They often spy out other companies’ business secrets under the cloak of negotiating business affairs.

Financial and sale affairs of our factory are under the control of a chief accountant.

Environmental sanitation and protection affairs of that city are under the control of a special municipal committe.

Queen Victoria and her ministers’yachts sailed to the coast of the Mediterranean under the convoy of escort vessels.

Under the cover of night，hunters sneaked towards a tiger’s lair to catch baby tigers.

Our success is achieved under the direction of good working style and selfless working spirit.

The king often travelled under the disguise of an ordinary traveller to inquire about the customs and local conditions of his people.

Chemical experiments are always carried out under the guidance of teachers so as to avoid accidents.

When the negotiation was ended，the agreement reached was under the hand and seal of both sides’managers.

After their father’s death，their family fell under the harrow at once.

Tortoises and turtles as well as crocodiles both come under the heading of reptiles.

People in occupied zones were all under the heel of barbarous aggressors.

Many European countries were under the hoof of Nazi bandits during the Second World War.

These teachers are all modest and prudent and fulfil their duty assiduously，their students all conform to convention and study hard under the influence of them.

A man drank too much and did not know the way back home under the influence of liquor，we had to send him back and commended him to his family members.

During the storm，our ship took shelter in a harbour and lay under the lee of the shore.

Our factory carries out strict rules in quality examination，products under the mark are not allowed to be sent out.

Honest people are open and aboveboard，they conduct themselves in straightforward manner and never deal with things under the mask of a false pretext.

A kind of automatic machinery under the name of robots has been widely used in factories and other places.

不得不(做某事)：

Our research institute is under the necessity of reducing its staff for its overstaffed personnel.

In spring and autumn we like to stay under the open sky to enjoy sunshine and fresh air.

Under the order of their superior organization，this company has increased import and export trade.

This shop only sold articles of daily use in the past，but under the present condition they begin to sell also vegetables and meat products to expand their business.

The scholar is much vexed with too much social intercourse，he often declines other’s invitation under the pretence of ill health.

A naughty child does not attend school under the pretext of illness，his teacher has called his parents’ attention to this.

Some students smoke stealthily，someone has told this to the teacher under the rose.

Some wild animals are vigilant and cannot be easily caught alive by the daytime，so hunters often go and catch them under the screen of night.

Peter’s fault will affect his reputation if known by others，so his friends are under the seal of confidence about it.

The woods is very tranquil，mushrooms and moss grow everywhere under the shadow of tall trees.

Doris is a sharp-witted girl，she always takes care to a certain degree while dealing with strange people because she does not know their real intention under the skin.

Things just and honourable are not afraid to be known to others，those done under the sly are mostly evil and unright.

Grandma tells her grandchildren a myth story，it goes that a prince lost his sense of judgement under the spell of a witch and associated with unkind persons.

Every one of us do not want to leave his home town，it is the best place to him under the sun.

What do you mean under the sun? 你到底是什么意思?2

Henry is an honest young man，he always does things aboveboard and never does them under the table.

A man can do nothing good if he often does them under the veil of false pretext，we should never put trust in such a man.

We anchored our ship under the wind，for weather forecast has told that there will be a storm.

In the sixteenth century many people were promoted as nobles under the wing of Queen Elizabeth in England.

Mr White is under his wife’s thumb at home，he obeys her words in everything.

My neighbour is an excellent swimmer and diver，he can swim tens of miles at a stretch and stay under water for very long time without coming up breathing.

Our new task is under way，we all work hard so as to complete it at an early date.

There is a platform balance in the mar ket for public use，customers can use it to weigh the things they have bought to avoid under weight.

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