昔のような元気はない。

olden days; former

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

(usu. at sentence-end) seeming to be; appearing to be; like; similar to; in order to (e.g. meet goal); so that; indicates hope, wish, request or mild command

lively; full of spirit; energetic; vigorous; vital; spirited; healthy; well; fit; in good health

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

not; emphatic suffix