Do you want to do something this Sunday? John and I would like you to come over for a party.
你星期日要不要做什么事?约翰和我想请你过来参加宴会。
The purpose of my coming here is to inquire about possibilities of establishing trade relations with your company.
我此行的目的正是想探询与贵公司建立贸易关系的可能性。