Difficult, to be sure. In my book all of my characters speak English. Though I have languages for them, they are the only ones who speak them. It would be very interesting to you to read,
Quote:
Zaciré gudra flen "Shibaar ftuniy keladi! Biz rpun ghot linevs fhro!" Son Numaryá flunda Zaciré ghot linevs fhro.
(That's not a langauge, just some random words). I think it goes without saying that your reader won't enjoy reading that very much. Anyways, it's much more interesting to read,
Quote:
Quickly, Zaciré yelled, "The Shibaar are coming fast! We must run for our lives!" So Numaryá and Zacirè ran for their lives.
Even if it's not the best writing, at least it's in a language you understand. So writing must be in English. That being said, there are a lot of ways that you can emphasize dialect in English. We emphasize dialect on this forum. Some (most?) of us say 'y'all' others don't. Some have different sentence structure.
My characters do speak differently. Numaryá, from Véhonas, speaks differently than Zaciré, from the Enclave. Srugóz, who speaks a language in SOV structure, tends to rather strangely speak. He about the market talks. It very confusing is. (And like Yoda sounds

) Anyways, there's oodles of way to emphasize dialects while still writing in English.
Numaryá, who is from Véhonas, speaks rather strangely because she often forgets the tenses of verbs. In Véhonas, tenses are shown by modifying the noun, rather than the verb. Depending on the ending of the noun, that sets the tense of the verb, which only has one tense (Present). So Numaryá will frequently say stuff like. "It is difficult. We run for our lives" when she is telling something that has happened in the past. Other quirks to her speech exist but I won't go into them all.
Zaciré, because he was brought up in the Enclave where tradition and ceremony are common, addresses people very formally in his speech. This distinguishes his speech from others.
Of course, it's not bad to sit down and write out dialects of your languages and say how they differ from the main, root language. But for all your world-building work on languages, your reader won't see any of it except in place names and how your character speaks. So we must come up with ways to distinguish their dialects in the English language.
Phew! Hope some of that was at least (remotely) helpful.

eruheran