在表示人体部位的名词前常用介词in、on,也常见用 by,但它们基本遵循固定的搭配。根据英语惯用法.身体多数部位的表面用 on。比较软和较为凹陷中空的部位用in。值得注意的是:在部位名词前要用定冠词 the.而不能用物主代词。如:I hit him on the ear/shoulder/nose/neck/back/head/chest.I hit him in the eye/mouth/stomach/ Commonly used prepositions in, on, before the nouns that represent parts of the body are also commonly used by, but they basically follow a fixed match. According to English idioms, the surface of most parts of the body is on. More soft and more hollow hollow parts used in. It is noteworthy that: in front of the nouns used to definite article the. Can not use the main pronoun. Such as: I hit him on the ear / shoulder / nose / neck / back / head / chest. I hit him in the eye / mouth / stomach /