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ni3 你 you, xi3 喜 huan1 欢 like, shen2 什 me 么 what. 你喜欢什么？What do you like?
shen2 什 me 么 mean what, and they are two high frequency characters in Chinese. You can expand the sentence by putting an object after 什么, then you will have more specific question to ask. For example, you can ask 你喜欢什么音乐（yin1 yue4, music) What music do you like? or 你喜欢什么电影 (dian4 ying3, movie) What movie do you like?