Just started learning Japanese two weeks ago. I have so many questions. If my question sounds a little silly, please bear with me. I just learned that adjectives + desu and verb + imasu. But how do I know if a word is verb or adj. without checking dictionary every time. For example: kibun ga warui desu (is sick); onaka ga suite imasu (is hungry) Here, the locations of "warui"and "suite" in the phrase look the same to me. Literal translation is "the feeling is bad" and "the stomach is empty". When I try to memorize which phrase ending up with "desu", and which ending up with "imasu", I got very confused. Someone told me the original form of "suite" is "suku". Is there any rules of verb transforming to adj.?