TO BEGIN WITH

• I'd start by
• For a start
• Well, firstly
• First of all
• Primarily
• to begin  with
• Initially
• In the first place
• On the one hand
• As far as I am concerned
• Concerning  /regarding
• At the outset
• From the outset
• In terms of
• In order to

• Conversely / otherwise
• Unlike
• Fartherevidence isfound in
• Unless
• Needless to say
•  Wht's more
• Which is why