prep.在...之后；迟于...；落后于；基于；追赶
adv.在后面地；落后地；迟；不如
n. 屁股
Who is the girl standing behind Richard? 站在理查德后面的那个姑娘是谁？
The train was 10 minutes behind time. 火车晚到了十分钟。
Britain is behind Japan in developing modern technologies. 在发展现代技术方面英国落后于日本。
Behind your every action is self-interest. 你的每一行动都出于个人私利。
The police were hard behind the escapees. 警察正在紧追逃犯。
用作副词 (adv.)He caught up with the parade and walked behind. 他赶上了游行队伍，跟在后面走。
The lights of the city were left behind us soon as we drove along the street. 我们驾车沿着街道一路疾驶,都市的灯光不久就被抛在我们后面。
You'll lag behind if you don't study harder. 你要是不努力学习,就会落后的。
He didn't want to fall behind in his lessons. 他不想在功课方面落后。
I fell behind in my payments. 我付款逾期了。
用作名词 (n.)Little Tom gave him a kick in the behind. 小汤姆在他屁股上踢了一脚。
behind可以用于表示时间，意思是“迟于”，也可作“一去不复返”解。
behind用于表示空间位置可以有三种情况：①所在位置；②目的地；③通过，即移动到某处，然后又离开。
behind作“留于身后”“走后留下”解时常与leave,stay,remain等动词连用；作“当某人已通过…之后”解时常与bolt,cling,close,shut,slam等动词连用。
behind还可由上述意义引申表示在程度、能力、进度等方面“较…落后”，还可表示“以…为后盾；支持”。
adv.(副词)behind表示位置时可作“在后面；向后面”“留在原处”“遗留在后”解；表示时间时可作“晚了；迟于”“过期；拖欠”解。behind还可引申表示进度等“落后”。
behind在句中可用作状语、表语，也可用作介词from的宾语，意为“从后面”。
