「是」、「存在」和「存有」有何分別？

是= verb-to-be (transitive verb) , for example, I am a boy. He is a doctor. She is going to be sixteen soon.

存在= be (intransitive verb), as in "I am" (我存在）. Descartes wrote, 'I think, therefore I am'（我思故我在）. Some Existentialists try to argue that 'I am' can be unconditional, and additionally it can be the essence of one's life. The state of being is thus named 'being' (noun 存在）. Heidegger distinguished the noun 'being' from "Being" with a capital B.

存有 seems to mean 'Presence.' Presence is the phenomenon of being. Being is the essence of presence. (Some philosophers may disagree.)

存在 can be the direct translation of 'being' in the noun and the verb forms.

存在
being的解釋是存在,生存,生命...