[{"Bold_text": "adverb", "List Items": ["from then till now (often preceded byever):He was elected in 1978 and has been president ever since.", "between a particular past time and the present; subsequently :She at first refused, but has since consented.", "before now; ago :long since."]}, {"Bold_text": "preposition", "List Items": ["continuously from or counting from:It has been warm since noon.", "between a past time or event and the present:There have been many changes since the war."]}, {"Bold_text": "conjunction", "List Items": ["in the period following the time when:He has written once since he left.", "continuously from or counting from the time when:He has been busy since he came.", "because; inasmuch as:Since you're already here, you might as well stay."]}]