behind

• 「behind」主要用作介词或副词，而非形容词。它表示在某物的后方，或表示处于落后、迟到的状态。

The word 'behind' is primarily used as a preposition or adverb, not as an adjective. It indicates a position at the rear of something or a state of being late.

1. At the back of somethingA2formal

   Located or situated at the rear side of an object or place.

   后面的（位于后方）

   • The kitchen is behind the living room.
   • He stood behind the curtain during the performance.
   • The garden is behind the house, beyond the fence.

   同义词backhindposteriorrear

   反义词in front of

2. Late or delayedB1informal

   Not on schedule; lagging behind the expected time or progress.

   落后的

   • I'm behind on my homework this week.
   • The train is behind schedule due to signal problems.
   • She fell behind in her payments after losing her job.

   同义词behindhanddelayedoverduetardyunpunctual

   反义词aheadearlyon timepunctual

3. In a lower position or rankB2formal

   Trailing or positioned lower than others in a comparison, competition, or ranking.

   落后的

   • Our sales are behind those of our main competitors.
   • He is behind the rest of the class in math scores.
   • The company is behind in adopting new technologies compared to its rivals.

   同义词belowdowntrailing

   反义词aheadleading

• 表示位置在后面或某物的后部；也表示时间上比预期晚，即延迟。

An adverb indicating position at the rear or in the back of something, or occurring later than expected. It is used to describe where something is located relative to a reference point or to denote a delay.

1. Physical location – at the backA1formal

   In a position toward the rear of something; situated behind something else.

   物理位置——在后面

   • The garden is behind the house.
   • She stood behind the curtain while the actors entered.
   • The car is parked behind the building.

   同义词rearward

   反义词aheadfront

2. Temporal lag – later than expectedB1informal

   Later than a scheduled time or deadline; delayed.

   时间滞后——比预期晚

   • We are behind schedule on the project.
   • Sorry I'm late; I'm still behind on my work.
   • The train is running behind due to a signal problem.

   同义词behindhandbelatedlytardily

   反义词aheadbeforehandearly

3. Support or endorsementB2formal

   In a position of support for someone or something; backing them.

   支持或赞同

   • I’m behind you in this decision.
   • The community is behind the new environmental plan.
   • She knows they are behind her efforts.

   同义词forsupporting

4. Hidden or secretiveB2informalamerican

   In a concealed or private manner, often out of public view.

   暗中

   • The negotiations happened behind closed doors.
   • He arranged the surprise party behind everyone's backs.
   • The real reason was kept behind the scenes.

   同义词covertlyfurtivelyin secreton the slyprivatelysecretlystealthilysurreptitiouslyundercover

   反义词openlypublicly

• 物体的后部或背面；在口语中常用来指人的臀部。

A noun meaning the rear part or back side of something, often used colloquially to refer to a person's buttocks.

不可数

1. Rear side or back partA1formal

   The part of an object or place that is farthest from the front; the backside.

   后面

   • The picture hanging on the wall has a small tear on the behind.
   • Please stand behind the line until you are called.
   • She placed the books on the behind of the shelf.

   同义词backbacksiderearreversetail

   反义词front

2. Location at the backA2informal

   A position that is situated at the back of something else.

   后面的位置

   • The garden is hidden behind the house.
   • There is a parking lot behind the school.
   • He sat at a table in the behind of the restaurant.

   同义词backbacksiderear

   反义词front

3. Cause, reason, or motivation (figurative)B2formalbritish

   The underlying factor or motive that explains an event or situation; often used in the phrase "the behind of" meaning "the cause of".

   原因、动机（比喻义）

   • The behind of his sudden departure remains unclear.
   • Understanding the behind of the policy helps us implement it correctly.
   • She tried to discover the behind of the mysterious noise.

   同义词basiscauseexplanationimpetusmotivationmotiveoriginpurposerationalereasonrootsource

4. Supporter or backer (slang)C1slangamericanbusiness

   A person or organization that provides support, sponsorship, or endorsement.

   支持者或赞助人（俚语）

   • The project finally got off the ground thanks to a wealthy behind.
   • He is a strong behind of the local art scene.
   • The campaign needs more behinds to succeed.

   同义词advocateallyangelbackerbenefactorchampionendorserpatronsponsorsupporter

• 介词，表示位置在某人或某物之后，也指落后、隐蔽或支持。

A preposition used to indicate a position at the back of something, or a state of being less advanced, delayed, or hidden.

1. at the back of somethingA1formal

   used to indicate a position at or toward the rear of something

   在……后面

   • The car is behind the house.
   • She stood behind me.
   • There is a garden behind the building.

2. not as advanced or delayedA2formal

   used to indicate that someone or something is late, delayed, or less advanced

   落后

   • He is behind in his studies.
   • The project is behind schedule.
   • She fell behind the others.

3. hidden or not visibleA2formal

   used to indicate that something is concealed or out of sight

   隐藏

   • The sun disappeared behind the clouds.
   • He hid behind the door.
   • The truth is behind his silence.

4. support or responsibilityB1informal

   used to indicate support for someone or responsibility for something

   支持或责任

   • She is behind the idea.
   • Who is behind this project?
   • He stood behind his decision.