单词behind可以用作介词和副词，我们都知道它可以做“在……后面”讲，除此之外，它还有其他的意思。
1.behind用作介词，一般由下面四个意思，它后面可以跟名词或代词。
1）behind表示“在/向……后面”。比如：
They were parked behind the truck...
他们停在了卡车后面。Who's the girl standing behind Jan? 站在简身后的女孩是谁？Stay close behind me. 紧跟在我后面。a small street behind the station 车站后面的小街。She glanced behind her. 她扭头朝背后扫了一眼。The sun disappeared behind the clouds. 太阳消失在云层里。
2）behind指“落后于，劣于，低于”。比如：
He's behind the rest of the class in reading. 他的阅读能力不及班上其他人。We're behind schedule. 我们的工作进度落后了。The trains are running behind schedule.那几班列车已晚点了。这里的behind常与schedule搭配使用。
3）behind指“支持，赞成，做……后盾”。比如：She knew that, whatever she decided, her family was right behind her. 她知道，无论她做出什么决定，她的家人肯定会支持她的。We are behind you all the way!我们自始至终支持你!
4）behind指“对…来说成为过去；抛到…的脑后”。比如：
She put the nightmare behind her.她已将噩梦抛诸脑后。He will attempt to put behind him the misery of failing to win a medal in his individual event.他会尽力忘掉自己没能在个人项目上夺牌的痛苦。
The accident is behind you now, so try to forget it. 这次意外已经过去了，把它忘掉吧。She has ten years' useful experience behind her. 她有十年的经验，能派上用场。
2.behind用作副词，有三个常见的意思。
1）behind指“在后面，向后”。比如：
She rode off down the road with the dog running behind.她骑车沿路而去，狗跟在后面奔跑着。The others are a long way behind.其余的人远远地落在后面。This is a house with a garden behind一座后面带有花园的房子。
2）behind指“留在后面，留在原地”，比如：
I was told to stay behind after school.我被告知放学后留下。They went for a walk but I stayed behind to look after the baby.他们去散步，我却留下照看婴儿。
3）behind表示“迟，慢，拖欠，积压”，常与with或in连用。比如：
She's fallen behind with the payments.她已经拖欠付款了。He was terribly behind in his work.他积压了大量工作。I’m a month behind with the rent.我的房租已拖欠了一个月。
3.考点
behind用作介词时，常同from一起使用，构成from behind（从……后面），这个结构经常在完形填空中出现。比如：
The sun peeped out from behind the clouds.太阳从云层里露了一下脸。She peeked at the audience from behind the curtain.她从帷幕后面窥视了一下观众。A ragged man emerged from behind the tree.一个衣衫褴褛的男人从树后面走出来。
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