101.hit on/upon偶然找到，忽然发现

　　By a stroke of luck, I hit on this dictionary in a second-hand bookstore. 幸运的是我在一家旧书店发现这本字典。

　　After many experiments, he's finally hit upon a solution to the problem. 经过多次的实验，他终于找到了解决问题的方法。

　　102.impose on/upon把……强加给，强迫接受

　　Don't impose your opinion on me. 别强加你的观点于我。

　　The present trouble was imposed on him. 他目前面临困境。

　　103.impress on给……留下深刻印象

　　His image has been strongly impressed on me. 他给我留下深刻印象。

　　He had the powers to impress his opinions on others. 他有魔力让自己的意见给别人留下深刻印象。

　　104.improve on/upon改进，超过

　　Our techniques are already advanced and being improved on daily. 我们的技术进步很快，而且在日益提高。

　　The girl improved on her previous record. 这女孩刷新了以前的记录。

　　105.in a moment立即，马上

　　The dinner will be ready in a moment. 晚饭马上就好。

　　He hesitated in a moment and then stepped forward. 他犹豫了一会儿，然后向前走了。

　　106.in a sense从某种意义上说

　　In a sense, the most intelligent are often the most successful. 从某种意义上说，最聪明的人往往最成功。

　　What you said is true in a sense. 从某种意义说来说，你说的话是对的。

　　107.in a way从某种程度上，有几分

　　The two persons look alike in a way. 这两个人看上去有点像。

　　The result was satisfactory in a way. 从某种程度上来说，结果还是令人满意的。

　　108.in addition 并且，另外

　　Dr York is a professor. In addition, he is a writer. 约克博士是位教授，另外他还是位作家。

　　The girl has collected many Chinese stamps and some foreign stamps in addition. 这女孩收集了很多中国邮票，还有一些外国邮票。

　　109.in addition to 除了……之外还，加之

　　In addition to swimming, I like playing basketball. 除了游泳，我还喜欢打蓝球。

　　He did your work in addition to his own. 除了自己的工作，他把你那份也做了。

　　110.in advance预先，事先

　　Phone me in advance if there is a meeting. 如果有会请打电话提前通知我。

　　You should know this truth in advance. 你应事先懂得这一道理。

　　111.in brief 简言之

　　In brief, I think we should take his advice. 简言之，我想我们应该接受他的建议。

　　This, in brief, is the view of the trade-unions. 总之，这就是工会的意见。

　　112.in case 万一，假设

　　In case it should rain, you'd better take a raincoat with you. 万一下雨，还是带件雨衣吧。

　　In case anybody calls for me, I'll be back at one o'clock. 万一有人找我，告诉他我一点钟回来。

　　113.in conclusion最后，在结束时

　　In conclusion, I'd like to express my thanks for your help. 最后，我想表达对你的帮助的谢意。

　　In conclusion he appealed to the delegates of all countries to support the draft resolution. 最后，他呼吁所有国家的代表支持决议的起草。

　　114.in contrast to/with与……形成对照

　　This appears small in contrast to that. 与那个相比这个子小点儿。

　　In contrast with your belief that we will fail, I know that we shall succeed. 你认为我们会输，而我的观点与你的相反，我知道我们会赢。

　　115.in debt 欠债，负债

　　He is in debt now. 他现有负债累累。

　　No matter how much money he earns, he is always in debt. 无论他赚多少钱，他总负债累累。

　　116.in detail 详细地，逐条地

　　Tell me your study method in detail. 请详细地告诉我你的学习方法。

　　The patient told the doctor his history of illness in detail. 病人详细的向医生讲述了他的病史。

　　117.in difficulty 处于困境

　　I'm in difficulty over paying my rent. 我付不起房租了。

　　Whenever I am in difficulties, I turn to him for help. 我一陷入困境就向他寻求援助。

　　118.in effect 事实上，实际上

　　The two methods are in effect identical. 事实上，这两种方法相同。

　　These rules continue in effect. 这些制度仍然有效。

　　119.in fact 事实上，总之

　　In fact, I am at a loss as to what to do. 事实上，我茫然失措。

　　In fact, I can do nothing for you. 事实上，我帮不了你什么忙。