你是第一次来我们这家店吗?英语怎么说?

你是第一次来我们这家店吗？
Is it the first time you come to our shop ?
我能为你提供什么帮助？
可以用 Can I help you ?
也可以说 What can I do for you ?
有我来为你介绍：生鲜和食品在一楼，百货在二楼。
Please allow me to introduce for you : unripe and fresh food are on the first floor , the general merchandise is on the second floor .

我能为你提供什么帮助：，你可以说CAN I HELP U？或者WHAT CAN I DO FOR U？

后者是很正式的说法，我这边的老外一般就说IS THERE ANYTHING I CAN HELP U？

你是第一次来我们这家店吗? IS THIS YOUR FIRST TIME TO VISIT US？
或者IS THIS UR FIRST TIME TO HAVE BEEN HERE？后者比较口语。

有我来为你介绍：生鲜和食品在一楼，百货在二楼。
MAY I INTRODUCE WHERE THE FOOD IS？
SEA FOOD AND OTHER FOODSTUFFS ARE IN 1ST FLOOR
commodity are in 2nd flor.