考研英语大纲单词中出现的有介词词性的单词共计72个，介词在英语中属于“小词”，但是介词在英语表达中随处可见、且功能强大，发挥的效力可不小。其功能之一就是，它可以和介词宾语一起构成许多否定意义的成语或词组。今天小编为大家分享这些否定意义的介词，助你解题更顺利！

　　11.on [ɑn] prep.向，朝……;关于;在……之上;在……时候

　　【例句】：What a pity! You’re really down on your luck.(太遗憾了，你的运气真是不佳!)

　　Don’t lie to me! I knew you were on the cross about what happened.(别对我说谎，我知道你对所发生的事情供述不老实。)

　　12.out [aʊt] prep.向;离去

　　【例句】：Out of sight, out of mind.(眼不见，心不烦。)

　　The design of the building is quite out of fashion.(这幢建筑的设计相当不时髦。)

　　The unique book is out of print.(该孤本不再印发)

　　The serious old man is quite out of humor.(这个严肃的老人一点儿也不幽默)

　　Don’t wandering on the wrong planet. Rest was now out of the question.(别想入非非了，现在休息是不可能的。)

　　To ask $5000 for such a small house like that is out of all reason.(这样小的一间房子要价5000美元简直是无理取闹!)

　　To be honest, I’ve had no exercise for ages;I’m really out of condition.(说实话，我已经有好几年没锻炼过了，我现在健康状况不好。)

　　It’s hard to see how prices could spiral out of control while labour costs remain so subdued.(在劳动力成本保持如此稳定的同时，物价上涨到失去控制的程度几乎是不可能的。)

　　Stars in the bright night are out of count.(晴朗的夜空中星星不计其数。)

　　The regulations were out of date and confusing.(那些规定已经不合时宜，而且令人费解。

　　I know I am out of line sometimes.(我知道我有时候过分了点儿。)

　　Those who arrive on foot, however, are out of luck.(但那些步行而来的顾客就没这么幸运了。)

　　Nothing in this peaceful suburb was out of place.(这个平静的郊区没有什么异常的情况。)

　　Freedom of navigation in the South China Sea is out of question.(南海的航行自由也没有任何问题。)

　　It is out of time to give a comment here.(在这儿说这种话有点不合时宜。)