彼はまだ山からもどっていない。

he; him; his; boyfriend

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

as yet; hitherto; only; still; not yet (with negative verb); more; besides; unfinished; incomplete; not yet finished with

mountain; hill; mine (e.g. coal mine); heap; pile; crown (of a hat); thread (of a screw); tread (of a tire); protruding part of an object; climax; peak; critical point; guess; speculation; criminal case; crime; mountain climbing; mountaineering; festival float (esp. one mounted with a decorative halberd); wall; wall tile; temple; temple grounds; wild

from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since

to turn back (e.g. half-way); to return; to go back; to recover (e.g. something lost); to be returned; to rebound; to spring back