Is it polite to use "one, man" in these situations? It is polite to use "one, man" in these situations? or is there a better pronoun to refer someone I know but do not know specifically. The one who came earlier showed me this.

Why is Χ(Greek letter Chi) pronounced as "kai"? It seems like this greek alphabet is the only one that the English pronunciation differs from transcription.

Why are French and Spanish words not anglicized? A lot of foreign words from countries using alphabets are anglicized(pronounced in English way)(for example, porsche is pronouced as por-sche in german, not porsch, and Zeus is pronounced as Ze-oos in Greek not Z-oos, and Ikea is pronounced as ee-ke-ah in Swedish, not ai-key-ah ), but it seems like French and Spanish words are exceptions. What is the reason for that? And are Americans taught how to pronounce French and Spanish words in school? How do most Americans know how to pronounce them? Just repeated exposure?

Does it sound okay to start a sentence with "about"? For example, "About the homework, do we have to do it until tomorrow?"

Why is "arch" pronounced like "arch(curvature)" in archbishop but like "ark(big ship)" in archangel? I've found out the the "arch" part of archbishop, archrival, archtraitor, archpriest, archdiocese, archduke, archfiend, archlute, archconservative, archconfraternity is pronounced as "arch(curvature)" but like "ark(big ship)" in archangel, archimage. It seems that in all of the words above the part "arch" has the same origin but what makes them pronounced differently?

"저 집 크지. 아니야?" 에 "아니" 라고 대답하면 어떻게 받아들이시나요? 한국어는 부정을 부정하면 긍정이라 모국어여도 명쾌하지 않은 것 같네요. 제가 느끼기에는 크지 않다는 뜻으로 받아들여지는데, 부정을 부정한거니 긍정이 되야하지 않나하는 의문이 생겨서요. "응" 이라 대답하면 크다는 뜻으로 받아들여지는데, 다른 분들도 그런가요? 이거에 관한 국립국어원 자료같은 것이 있나요? 정규 교육과정에선 보지 못한 것 같아서요.

Do native English speakers make mistake on If I was/ If I were? If the situation is possible, I was taught I should use "If I was"(though not so common). For example, If I was rude, I would like to apologize. Do native English speakers make mistake on If I was/ If I were? or is it something native speakers almost never make mistake on?

Are natives comfortable with inversion? Some grammar questions with inversion seem to be tricky so I am curious whether it is ok to not know them.

Difference between Agency, Institute, Institution What is the difference between the three?