In Chinese, an alternative question is formed by using 還是 to connect two choices, which can be nouns, noun phrases, verbs, verb phrases, or clauses:
你喜歡紅茶還是綠茶﹖ (nouns)
這本書是你的還是她的﹖ (noun phrases)
下午你來還是不來﹖ (verbs)
你要聽古典音樂還是聽現代音樂﹖ (verb phrases)
今天晚上你來我這兒還是我去你那兒﹖ (clauses)
Note:
the two items connected by 還是 are normally parallel in structure; and
as with affirmative-negative questions and questions with interrogative words, alternative questions do not have 嗎 at the end.