This study is about sentences which express emotions in modern Japanese. Modern Japanese studies verse mainly on predicate sentences. Such sentences aim to convey information about “things”. As such, there are scarce studies about sentences which express emotions being treated as a kind of sentence of its own. These sentences do not aim to convey information of the “thing”. An example would be “Beautiful flower!”, which is uttered unconsciously upon being moved by the beauty of any given flower. This type of exclamatory sentences are uttered by speakers to express their emotions and they employ the structure of Noun Phrases. Other kinds of sentences which express emotions are Labeling Sentences like the insult “Bakayaro!”. Since systematic studies of sentences which express emotions are scarce, I would like to attempt to describe and classify them, considering Labeling and Exclamatory sentences as separate sub-groups.I am also attempting to grasp the structure of modern Japanese sentences, not leaning on the structure of predicate sentences.