用英语写作文表示欢迎时，可以采用以下几种表达方式：

简洁明了的欢迎

"Welcome to [destination]."

"We are delighted to have you here."

热情洋溢的欢迎

"I extend to you our warmest welcome."

"It's a pleasure to welcome you to [event/location]."

正式场合的欢迎

"Dear [Name], on behalf of [organization/group], I would like to express our sincere welcome."

"We cordially invite you to join us at [event/location]."

包含具体安排的欢迎

"Please sit back and relax, your luggage will be taken care of."

"We have prepared accommodation and transportation for your stay."

结合文化背景的欢迎

"Welcome to [country/city], where [specific cultural aspect]."

"We look forward to sharing our culture and traditions with you."

根据具体的场合和对象，可以选择合适的表达方式来传达你的欢迎之情。希望这些建议对你有所帮助!