When two things are the same in a positive way (that is, the words "no" or "not" are not in the descriptions) we can say either, "A is/likes/has/plays/knows, etc., and so does B" or ""A is/likes/has/plays/knows, etc., and B does, too." Example: "Ross was born in Canada, and so was Lori" or "Ross was born in Canada, and Lori was, too." When two things are the same in a negative way (that is, the words "no" or "not" are in the descriptions) we use neither/nor/either. For neither/nor, we must reverse the verb/auxiliary verb/do form in the second phrase. For example: "Ross wasn't born in Egypt, and neither was Lori" or "Ross wasn't born in Egypt, nor was Lori." Another way is to use "either" at the end of the sentence, and keep both verb forms negative: "Ross wasn't born in Egypt, and Lori wasn't, either." It's tricky and takes some practice. When two things are different, we just put "but" between the two phrases and reverse the verbs: "Ross was born in Canada, but Jack wasn't."

j'apprends également l'anglais mais je vais faire un essaie pour vous éclairer :) normalement ça fonctionne sois avec : either ...or soi : neither...nor , un exmple, qui relève du choix : she either eats apples or bananas (elle mange sois des pommes sois des bananes) she neither eats apples or bananas (elle ne mange ni des pommes ni des bananes). un autre exemple ? celui ci relève de la cause: either you work or you wil be fired ! (si tu ne travaille pas , tu sera liscencié!) either me and Brad gave you explanation that may help :)