Quais são correctas?:

1- eu como quando eu quiser / eu comer .
2-porque vc quer eu comer / coma
3- ela sabia que ele ia trai-lo / trair ele .
4- se fazer isso comigo / se fizer .
5- as pessoas / O pessoal
6- ainda que demore / demora

Посмотреть перевод

1. Eu como quando eu quiser (most people would say it this way, but the correct form of saying it, would be using a verb in the future form "eu comerei, quando eu quiser", but no one really speaks that way usually, you will only see it in formal writing).
2. Por que você quer que eu coma?
3. Ela sabia que ele iria trai-lo (it is correct, but rather formal). Ela sabia que ele ia trair ele (this would be the most common way to say that, there are some grammatical mistakes though).
4. Se fizer isso comigo.
5. Both are correct, but there is a subtle difference in the idea of each one. "As pessoas" is a little more indeterminate, if you want to talk about people in general, the humanity maybe. You can turn "pessoas" a bit more specific though, by saying something like "as pessoas surdas" (the deaf people), for example. "O pessoal" is a bit more personal, if you want to talk about a group identified by a specific idea. Example: • A praça ficou toda suja porque os donos dos cachorros não a limparam como deviam. Que pessoal sem noção! // The park got completely dirty because the dog owners didn't clean it as they were supposed to. Such ignorant people! (Only that specific group of dog owners is ignorant); • As pessoas parecem só estar ficando mais infelizes dia após dia. // People seem to just be getting unhappier day by day (the humanity, all the people seem to be getting unhappy).
6. Ainda que demore.