介词不能独立在句中做成份，介词后必须与名词、代词、或动名词构成介词短语在句中充当一个成份，表示人、物、事件等与其它人、物、事件等之间的关系。
介词与名词
- I like to take a walk in the park every morning.（我喜欢每天早上在公园里散步。）
- Please put the book on the table.（请把书放在桌子上。）
介词与代词
- I have a gift for you. (我有一份礼物给你。)
- I went to the park with them. (我和他们一起去了公园。)
介词与动名词
- She is interested in learning new languages. 她对学习新语言很感兴趣。
- He apologized for being late. 他为迟到道了歉。
介词与从句
- I am grateful for what you have done for me. 我感激你为我所做的一切。
- It all depends on how you handle it. 这都取决于你如何处理。
介词与不定式
- I bought a book on how to repair cars. 我买了一本关于如何修理汽车的书。
- He never did anything but watch TV. 除了看电视，他从不干任何事。
介词与另一介词
- Choose a book from among these. 从这些书中选一本吧。
- Suddenly he came out from behind the door. 他突然从门后出来。
介词与副词
- I can’t stay for long. 我不能久呆。
- He came from there.他从那里来。
介词与形容词
- He regarded the situation as (being) serious. 他认为形势严重。
- Her pronunciation is far from perfect. 她的语音远不是完美的。
介词与复合结构
- She had no objection to Mary marrying him. 她不反对玛丽与他结婚。
- She left the room with the light on. 他离开房间时没有关灯。