Problem converting SELECT with embedded SELECTs

I am converting a Sybase SELECT query to Oracle. The problem is that the original statement contains 'embedded' SELECTs as follows:

SELECT T1.F1, (SELECT T2.F1 WHERE T1.F2 = T2.F2) WHERE T1.F3 = 'xxx'

I need this setup because I need the statement to return T1.F1 even if the link to T2 does not exist.

How can I achieve the same result in Oracle? Due to some problem on the custom application I am using, I cannot use stored procedures or UNION.

Thanks for any suggestions.

-- 
Margaret Ngai
E-Mail: margaret_at_synrevoice.com