Getting an e4-like position from queen's gambit

In a week I'll be playing a small tournament where each game starts from the queen's gambit to practice my QGD, but I'm an e4 player so the other half of my games I'll be clueless. I have noticed it's almost impossible to transpose to an e4 opening after c4 has been played, but is there a way to get an early e4?

Clarification: If it wasn't obvious, I'm practicing QGD from black's perspective, As an e4 player I don't need practice against the QGD

Hmmmmm, I would say that the only thing you can hope for is a modern by the opponent lol. I would probably suggest you learn the basic ideas of the QGD and just play solid. Maybe if you have time learn the Catalan so you can limit the options your opponent has, even if it is just by a little. 

If you want to learn the Queen's Gambit then why would you want to transpose to an e4 position? You can get e4 and transpose to e4 openings against 1... e6, 1... d6, 1... b6, 1... g6, 1... a6 1... Nc6, 1... c5 (smith morra!)

and I forgot 1... c6 as well

You can't force the Grunfeld. Furthermore it is not an opening deriving from d4, d5, c4.

The Catalan is much easier to play with Black due to the extra pawn. 1 week is simply not enough time to learn a completely new opening

If you are playing the Marshall defence intending on transposing to a Grunfeld you need to quit chess

The Exchange variation with something like nge2 h3 and 0-0-0 is probably your best bet

Looks more in line with attacking chess rather than positional

or If you're one of those people who likes to play c3 d4 in the Italian maybe this'll be to your liking

Of course, none of them are going to be like the open games you get in the Max Lange attack or something similar...which is why most people just stick to either 1. d4 or e4 instead of mixing in both

@sadranga - I find your comments bewildering. The Marshall is something completely different. Please copy 1.d4 Nf6 2.c4 g6 3.Nc3 d5 and paste it into google before telling me that I'm giving you moves from the Marshall.

I doubt you understood at all what he was getting at!

If you are playing a Queen's Gambit Thematic (1.d4 d5 2.c4) and you are normally a Grunfeld player as Black, to do something as stupid as playing 2...Nf6 (The Marshall Defense, which is highly dubious, 3.cxd5! with a large advantage for White!) WITH THE INTENTION OF MEETING 3.Nc3 with 3...g6, WHICH WOULD BE A DIRECT TRANSPOSITION TO THE GRUNFELD DEFENSE, and you actually try to do something this stupid to attempt to steer the game to a Grunfeld, then yes, you should quit chess!

1.d4 d5 2.c4 Nf6? 3.cxd5! (3.Nc3? g6 would be a Grunfeld, the ? for 3.Nc3 is for not taking advantage of Black's idiocy) Nxd5 4.Nf3! (Not the immediate 4.e4?!) and White has a clear advantage.

I can't force that, and either way after 2. Nf6 I'd rather just exchange and be simply better

I want to practice my QGD as black because my prep against d4 is severely limited. I have no interest in learning the QGA, slav, or counter-gambit, which comprise 2/3 of games played from the queen's gambit. The point is every game starts on move 2 with white to play/

It is a queen's gambit thematic, correct.