Corrections are in ALL CAPS. No one is better than the other. Will you have a BIT OF HEART, please? The language that he used WAS so rude. Your skills are no better than your father's. They are both equally responsible for what happened.

For me, if I say that I saw a movie, it means that I went to the theater/cinema, regardless of verb tense being used. And if I say that I watched a movie, it means that I did not go anywhere to see the movie, but that I stayed home and watched it on television. We also use "see a show", "see a concert", "see a performance", etc. in a similar way as "see a movie". This is an exception to the usual use of "watch" as something more intentional, and "see" as something more passive.

I would say that they are all correct, as long as you are using "none" to refer to things rather than people. However, if the comparison is between one person and other people, then it would be more appropriate to use "no one" or "nobody" instead of "none".

Both "doesn't it" and "don't they" can be used in this case. "It" is not exclusively for inanimate objects. "It" can be used for gender-neutral or gender-ambiguous words, such as "family". "They" can also be used because a family is a group of individuals.

You could write this: "When I was walking through the park, I came across James, who was playing soccer." Notice that "kicking soccer" does not make sense. You can kick a soccer ball, but you cannot kick the game itself.

I would understand "perspective" here to mean "context".

The best answer is, "This is just like how we do it in Brazil."

If you go back about 100 years or so, English speakers always used "who" as the subject, and "whom" as the object. That was a strict rule back then. However, since then, "who" has started to replace "whom" in a lot of situations. In everyday speech, "whom" still tends to follow prepositions, but increasingly, "who" is used after verbs. At some point in the future, the word "whom" may completely disappear from the English language.