41.I'm busy with （doing）…… 我正忙于…….

　　?Don't bother me - I'm busy with （doing） my project right now.

　　别打扰我,我现在正忙于作计划呢.

　　42.In conclusion, ……最后,…….聪之,…….

　　?In conclusion, I find mutual understanding plays a key role in building a friendly relationship.

　　总之,我发现相互理解对建立友好关系至关重要.

　　43.In order to……, you should…… 为了………?,你应该……….

　　?In order to understand this essay fully, you should read more about its author.

　　为了更充分地理解这篇文章,你应该多看一些关于作者的介绍.

　　44.In other words, …… 换句话说,…….

　　?In other words, you should read and speak English crazily every day.

　　换句话说,你应该每天疯狂读英语,说英语.

　　45.In that case,… 既然那样,…….

　　?In that case, I have no more to say.

　　既然那样,我没什么好说的了.

　　46…… ……is of great importance. ……很重要. │

　　?If you want to succeed in life, I think to set a goal for yourself is of great importance.

　　如果你想在生活中成功,我觉得为自己确立一个目标是非常重要的.

　　47.Is it convenient for you to…… 你是否方便……

　　?Is it convenient for you to post this letter for me when you go out

　　你出去的时候是否方便帮我寄这封信

　　48.It depends on whether…… 这取决于……是否…….

　　?It depends on whether you are determined to do it or not.

　　这取决于你是否决心要做这件事情.

　　49.It doesn't make sense to………没有任何意义.

　　?It doesn't make sense to argue with him.

　　和他争论没有任何意义.

　　50.It is/was……that/who…… [强调句句型]

　　?It was Edward who told me about it.

　　告诉我这件事的是爱德华.