I am a grammarian, ex professo, gifted with a PhD. “Is you-know-who here?” is perfectly consistent with English grammar. In good idiomatic English, the hyphens I prefer are optional.
With my CPAP gizmo, equipped with a mask that covers both nose and mouth, I sleep much more soundly. For diminishing mask-marks, I use a prescription skin-lotion.
In English and in German, unlike Latin, it can be quite grammatically correct to end a sentence with a preposition. As an instructor of advanced Latin at an American university and having had considerable experience lecturing, in Germany, as a visiting professor at the Goethe University of Frankfurt-am-Main, I am able to say that it is never good to teach English, a Franco-Germanic language, as though it were Latin.
Particles that would have a velocity greater than the speed of light are called “tachyons.” By the mathematics of Einsteinian relativity, they would have negative mass, not infinite mass. Most interestingly, because no contradiction is entailed in the mathematics of Einsteinian relativity by any calculations of negative mass, there is no reason in principle by which to think that reversals in the trajectory of time should be impossible for tachyons.
I am a grammarian, ex professo, gifted with a PhD. “Is you-know-who here?” is perfectly consistent with English grammar. In good idiomatic English, the hyphens I prefer are optional.