1.in due time 及时，按时
例句：So you must find a way to cut your costs and finish your project in due time.
所以你必须找到好的办法削减你的成本并在预期的时间内完成你的项目。
2.in effect 实质上,实际上，在结果方面，正在实行,有效
例句：Even though she is, in effect, his stepmother, he fathers a child with her.
实际上，尽管藤壶是自己的继母，源氏还是与她生育了一位孩子。
3.in exchange (for) 作为(对…的)交换(替代)
例句：But in exchange, you have to tell me where the cell phone is.
但是作为交换，你必须告诉我那个手机在哪。
4.in existence 存在的，实有的
例句：Reviewers see this as one of the best music search engines in existence.
乐评人士认为这是现有最好的音乐搜索引擎。
5.in fact 其实,实际上
例句：These memories are, in fact, an attempt on his part to build up his own image.
这本所谓回忆录实际上是为他自己树碑立传。
6.in favor of 赞同，支持,出亍偏爱，有利于
例句：These are arguments in favor of this hypothesis.
这些就是支持这个假设的论据。