relative-position phrase (Xの前/後/上/下)
grammar9 sentences
Japanese expresses spatial relations via relational nouns preceded by の: [reference] + の + [direction], where directions are nouns — 前 (front), 後ろ (behind), 上 (above), 下 (below), 中 (inside), 横 (side). 机の上 ('on top of the desk'), 木の下 ('under the tree'), 家の中 ('inside the house'), 鏡の前に立つ ('stand in front of the mirror'). These relational nouns are full nouns that take other particles.
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