My English is not very good, but just try...

1. Before getting into this field, my profession was...

or you can simply say "my profession was XXX before I get in this field"

2. This is my first time dealing with this type of (issue, problem...etc).

I think Hermosabeach, twc and other have given you very good translations, I only try to give you one more reference

所有跟帖： 

• Sorry, correction -gzlady- ♀ (265 bytes) () 10/26/2007 postreply 08:39:02