1.We'd like to talk to you about taking over his contract. 我們想和你談談關于他的合同的事情
would like to”愿意,想要,準備“;
I would like to commend him to my friends.
我愿意把他推薦給我的朋友們。
I would like to go to an inexpensive restaurant.
我想去花費不大的餐廳 。
2.Since...you should..”既然...那么你應該...“,這是英語中常用的表示因果關系的說法,since是”既然“;
Since you don't answer the question, you should ask someone else.
既然你不知道這個問題的答案,那你該去問問別人;
Since today is very fine, I think we should go out for a walking.
今天天氣不錯,我想我們可以出去走走。