Chinese phrases, sentence – Learn Mandarin – How to say ” He is very childish and selfish” in Chinese: 他非常幼稚和自私。 Ta1 fei1 chang2 you4 zhi4 he2 zi4 si1. Ta1 (他 third person pronoun, he) fei1 chang2 (非常 an adverb, very) you4 zhi4 (幼稚 adjective, selfish) he2 (和 a linking word (conjuction), and) zi4 si1 (自私 adjective, selfish). 幼稚 You4 zhi4 is a phrase to describe about immaturity of a person. For kindergarten, in Chinese we call it 幼稚园you4 zhi4 yuan2. The opposite of you4 zhi4 is cheng2 shou2 (成熟 mature). There is a phrase called 自私自利 zi4 si1 zi4 li4: selfish and care for only self interest. 自 Zi4 means self, 私 si1 means private, here means only care for self, 利 li4 means interest, so 自利 zi4 li4 means care for self interest.
This following video is a song from the movie : you are the apple of my eye. It is sung and written by the leading actress: Michelle Chen (陈妍希Chen Yan Xi ) The title of the song is : Hai2 zi5 qi4 (孩子气 Childish). The lyrics, pinyin and English translation can be found at http://www.chinesetolearn.com/?p=1557