Pronunciation of "en tous cas" Audio question ;) http://vocaroo.com/i/s106ecDWu7vW

à la barbe Je trouve cet homme à la barbe blanche dégoûtant. I find this man with the white beard disgusting. <- Right? Why is it "à la barbe"? Peculiar construction. Do I need to just memorize it or is there some sort of explanation for it? Can't you say: "Je trouve cet homme avec le barbe blanche dégoûtant"?

adjective + part of the body Okay, so the rule was: adjective + part of the body -> use indefinite article part of the body + adjective -> use definite article (besides possessive adjectives (tes, ta, ton etc), of course) But then in one of the examples I read this: Elle a de jolies jambes. So not "des" but "de". Why is that? Is it perhaps in order not to confuses "des" as indefinite plural article with "de + les"? Thanks.

différence entre "j'aurais voulue" et "j'eusse voulu" Quelle est la différence entre les deux? j'aurais voulu et j'eusse voulu Pouvez-vous me donner quelques examples de l'usage de ces expressions? Peut-être avec une traduction en anglais. Ce serait mieux. Merci.

"P's and Q's" In this idiom, what do P and Q refer to? Because it probably refers to something, even though it's an idiom.

Well, that's this project done and dusted. Is this correct grammar? Saw this sentence recently. Looks odd. "...that's this project..."?

"on est" What does this really mean? For instance, "on a" is sort of like "we have\there is", as far as I understand. But with "est" it's a bit too hard to comprehend...Maybe it means "it is"?

to the contrary notwithstanding "The celebrated Greek problems (trisect the angle, square the circle, duplicate the cube) are of this kind, and irrepressible mathematical amateur to the contrary notwithstanding, mathematicians are no longer trying to solve them." Could some explain me the usage of this "to the contrary notwithstanding" phrase here? I understand the words, but the construction in terms of grammar is very peculiar to me. Also, this comma perplexes me, maybe without it I could have made sense of this sentence, or if anything it would be easier, although I'm still not sure I would understand it.