Spell combat and the Two Weapon Fighting feat tree?

[Jae Wolftail]

Magus Spell Combat

Quote:

At 1st level, a magus learns to cast spells and wield his weapons at the same time. This functions much like two-weapon fighting, but the off-hand weapon is a spell that is being cast.

TWF

Quote:

Your penalties on attack rolls for fighting with two weapons are reduced. The penalty for your primary hand lessens by 2 and the one for your off hand lessens by 6.

Imp.TWF

Quote:

In addition to the standard single extra attack you get with an off-hand weapon, you get a second attack with it, albeit at a –5 penalty.

Greater TWF

Quote:

You get a third attack with your off-hand weapon, albeit at a –10 penalty.

My main question is; "can a magus translate those extra attacks into more casts?" Secondly, since it's RAW that Spell Combat acts like TWF does the feat TWF modify SC's penalties?

[Snowlilly]

No.

Spell Combat is its own full round action. You cannot combine it with TWF, flurry, or any other special action.

[Rub-Eta]

+1 @Snowlilly.

Spell Combat stats a -2 penalty. The penalties stated in TWF have nothing to do with Spell Combat and they do not affect spell combat.