高中英语知识点：名词的所有格

　　名词有三个格：主格、宾格和所属格。这里我们只讲属格，属格表示所有关系，它有两种不同的形式。

　　一、一是在名词尾加's

　　(如 my brother's toy我弟弟的玩具，the hostes's living room女主人的起居室)，如果原名词已经有复数词尾?s,或?es，只加' (如：soldiers' training ground士兵的训练场，teachers' reading?eoom教师阅览室)。注意，如果名词虽然是复数，但不是以?s结尾，则仍加's (the children's mother孩子的妈妈)

　　1) It is widely believed that the pull of gravity on a falling raindrop changes round shape into a teardrop shape.

　　[A] of the drop [B] the drop's [C] drop of [D] drops their

　　2) The winner [A] photograph was of [B] an old barn(仓库) window covered with [C] a [D] delicate， lacy frost(带花边的霜).

　　二、另外一种属格是由介词of加名词构成名词短语

　　3) At [A] birth， the [B] head of a bady is extremely large in [C] relation to a [D] rest of the body.