Welcome 某某人？Welcome to 某某人？

Welcome sb.(人)

Welcome to some place(地方)

welcome sb.欢迎某人
welcome to sp.(some place)欢迎到某地方
或者：
welcome sb. to some place.欢迎某人到某地方。

Welcome to somewhere For example:Welcome to our company.
Somebody be welcom For example:He is welcome,you are welcome...

welcome sb.
welcome to sp.(some place)

welcome sb. to some place.

welcome sb to

welcome 某某人to