The phrase "as if to argue" is correct and usable in written English.
It can be used to indicate that someone is behaving or speaking in a way that suggests they are trying to make a point or present a case, often in a hypothetical or illustrative manner.
Example: "She crossed her arms and frowned, as if to argue that her opinion was the only one that mattered."
Alternatives: "as though to contend" or "as if to assert".
As if to argue the point, Mr Erdogan made his third official visit to Washington, DC, in early June.
Debord's map depicts a directionless "drift" through the streets of Paris, as if to argue that the city is created through individual experience and collective memory, rather than a rigid plan imposed from above.
Even so -- and as much has been said both to decry and in defense of that series; I myself am not a fan -- the idea that the problems of a single popular franchise merits a casual dismissal of the entire genre is as laughable as if I were to argue that Rob Schneider's career is proof positive that cinematic comedy is a fundamentally worthless medium.
Ramesh Ponnuru of National Review has gone so far as to argue, "If the public still wants today what it wanted in 2006 — an end to a failed foreign policy, a renewal of clean government, and a start at domestic reform, but not a sharp turn to the left — then there is one logical candidate for it to back this November: John McCain".
Thus if, as Locke seems to argue in II.xxi.23 24, we are (except under very unusual circumstances) free with respect to the act of willing with respect to a future course of action, then it follows immediately that we have the power to suspend.
Kerry went so far as to argue that if the United States attacked Libya, "our own security will be strengthened immeasurably".
And Dr. John A. Robertson, a professor of law at the University of Texas at Austin, went so far as to argue that, if human cloning could be made safe, it should be used to treat certain infertile couples.
She cracks up a bit on that last word, as if she is unable to argue against irony with a completely straight face.
It is as if he is trying to argue with reason that reason does not exist, or to argue on the basis of science that science is hopelessly mistaken.
In early discussions about the research, one leader from the voluntary sector said our work sounded interesting, but added that "it almost sounds as if you are going to argue against one of the immutable laws of economics".
But I might be happy as a lawyer if I got to argue a lot.
