"has been overseas" is correct and can be used in written English.
An example of a sentence in which this phrase is used is: "She has been overseas for six months and is ready to come home."
All in all, he has been overseas seven times since he took office in January 1998.
One of the most common scams since the pension freedoms were announced has been overseas investment opportunities.
Another major source of portfolio capital inflows has been overseas equity issues of Indian companies via global depositary receipts (GDRs) and American depositary receipts (ADRs).
That's also when the president who has been overseas three times in his adult life gets his first real tour of the world.
Bishop, who has been overseas for discussions about the war against Isis, was back in the chamber for question time on Thursday and rose to the dispatch box afterwards to admit the error.
The actor has been overseas, touring with his band Hollywood Vampires, playing Monday in Stockholm and scheduled to perform Wednesday in Horsens, Denmark.
Both had been overseas when terrorists struck New York and Washington on Tuesday.
All of them he suspected had been overseas, although none of them actually had.
"The risk is that, having been overseas, you'll want to stay and never come back".
Mostly, though, they have been overseas institutions, such as Union Bank of Switzerland and Lloyds TSB.
It seems like a long time to the loved ones whose troops have been overseas.
