n. [语]介词；系词（preposition 的复数）
1.Articles and prepositions are stumbling blocks to the beginners of English.
冠词和介系词对英文初学者来说是个绊脚石。
2.Prepositions are words that commonly indicate movement, but they must be in the correct order.
介词是一种通常表示运动的词语，但要在正确的顺序里来使用。
3.Older people write longer updates, use more prepositions and articles, and talk more about other people, including their family.
年长一些的人会写更长的状态更新，用更多的介词和冠词，更多的谈论其他人，包括其他人的家庭。
4.Prepositions that mark situation arguments in the adverbial position cannot be omitted.
状况论元在句中处于状语或补语位置上时，介词一般不能省略。
5.Neil: Because many words are grammar words or prepositions.
因为语法结构词或介词并没有实际意义。
6.They are usually called Conquering Prepositions or Conquering Phrases and the like.
那些书通常是战胜介系词或战胜片语之类的书名。
7.I can't tell you how to use prepositions correctly.
我不能准确地告诉你怎样使用介词。
8.So do you. Except for your tendency to end Sentences with prepositions.
你也是。就是你好像老喜欢，把介词放在句尾。
9.I think prepositions are perhaps one of the hardest problems for me.
我认为在我介词或许是最困难的问题的之一。