Hello. I am a native English speaker and a grammar nerd. 1) The word rather would not be a good fit in the first example sentence. We would use the term “to avoid”. A good revision of your example sentence would be, “He walked in order to avoid getting stuck in traffic”. More casually it could be stated, “We walked so he wouldn’t get stuck in traffic” In the second example sentence, the word rather works. It would be correct to say, “People should be concerned about themselves, rather than meddling in other people’s affairs. 2) It seems there should NOT be an apostrophe in Picasso. An apostrophe signifies possession, not plural. Such as, “Those memoirs are Picasso’s”. So it would be correct to say, “These paintings are all Picassos”

1. Although infinitive and gerund forms are both basically correct(although a quick web research seems to be pointing towards infinitive as being more popular), this particular sentence just sounds odd to me. It might be because of the use of "walked"; I'm not sure why it doesn't sound right, though, it might be just me. 2. It depends on what you have in mind - "to be concerned about sth" means "to be worried about sth", whereas "to be concerned with sth" means "to be involved with sth". I would probably add "more" before "concerned in this sentence. 3. Seems like it should definitely be "the Picassos". 4. I'd go with the first one.

Please, could you help me?

1- I would use: “He walker instead of getting stuck” or “He prefer walking rather than getting stuck” 2- “ people should get concentrate about themselves” 3- Picasso’s the “s” it’s a possessive pronoun.