题目

When you hear Westerners（西方人）say “ Drop in anytime”（随时来玩）or “Come and see me soon” , you should realize that it doesn’t mean you are welcome to come over to their house anytime. It’s wise to telephone before visiting someone. Never accept an invitation unless you really plan to go. You may refuse by saying, “Thank you for inviting me, but I may not be able to come.” If you are unable to come after accepting the invitation, be sure to tell those who invite you in advance（提前）that you will not be there. When you have accepted the invitation to a