Your grandfather went to the Engineering School there.
你爷爷进那个工学院。
I won't embarrass myself by calling Mr. Lee by another's name.
我不想因为张冠李戴使自己难堪。
My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.