怎样知道被人利用了？

How can I tell if someone is just using me?
我如何知道有人在利用我？

获得74.1k好评的回答@Derrick Chavez：

Definition: Give a false impression of one desire in hopes of receiving another.
定义：为了达到某种目的假装有另外一个目的。

Here is a scenario:
看下面这个情节：

The girl
女孩

1.She wants a relationship.
1.想恋爱。

2.She wants deep connection.
2.想深入交往

3.She cares for her potential parnter in many ways.
3.在很多方面都在乎未来的男朋友。

On the other hand,
相反，

The guy
男孩

1.The guy pretends to want a relationship.
1.这个男孩假装想谈恋爱。

2.He pretends to care deeply for the girl.
2.他假装很在乎那个女孩。

3.He truly and only desires the sexual activity. He convinces the girl he wants more.
3.他真的只想发生关系，但说服女孩相信他不只是想发生关系。

4.He deceives, lies, and cheats.
4.他蒙蔽你、对你说谎、欺骗你。

To use someone means to deceive them, to lie, and to cheat in hopes of receiving something in return.
利用别人就意味着蒙蔽、说谎、欺骗，只是为了达到某种目的。

To answer your question:
现在回答你的问题：

1.Are their actions aligned with their words?
1.他们言行是否一致？

2.Are their stories and words untrue?
2.他们的故事和话是否虚假？

3.Are they not meeting your needs directly?
3.他们是不是不会直接满足你的要求？

These are signs he is using you for something else.
以上迹象就表明他们是在为某种目的利用你。

获得264好评的回答@Ovidiu Fulea：

1.See what happens when you refuse them on multiple occasions
1.看看各种情况下你拒绝他们会怎样。

2.Ask something of them as well, see if they refuse or accept
2.也向他们提出一些请求，看看他们拒绝还是接受。

In all of the above, look at their reaction, see if they care or that you did that for them or not, or if they were annoyed that you couldn’t do it.
在上述所有情况下观察他们的反应，看看他们是否在乎你帮不帮他们的忙，或者你做不到时他们是否会生气。

Also, think. How often do they ask you of things? Wold you rather do something else instead of helping them? When you see that person, are you annoyed?
而且你要思考一下，他们多久向你提一次要求？你宁愿做点别的也不愿意帮助他们吗？你见到这个人会生气吗？

获得411好评的回答@Maureen Sharkey：

They always take, always ask, and never do the same back to you.
他们总是索取，总是要求，却从未给你回报。

They may be nice, polite, and nice to be around. But you will never ever get the same from them. Also, it may be the only time you hear from them or see them is when they want something.
他们可能人很好，有礼貌，很好相处，但你从他们那里永远得不到回报。而且可能只有当他们有要求时才会跟你说话或见面。

Those are some of the indications.
以上都是暗示。