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" readingeoom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).
3) At [A] birth, the [B] head of a bady is extremely large in [C] relation to a [D] rest of the body.
三、例题解析
1) B为正确答案。“It”是形式主语。“that…”引导的是主从句。主从句的谓语是“changes…into…”“把……变成……”。其中“…into…”的前后应是对应的平行结构。很明显A和D都不行,不能把“changes”误作名词。C改变了“…into…”的平行关系。只有B既能与前边的动词“changes”衔接,又能保持“…into…”的平行关系。
2) A错。 改为winner’s。
3) D错。 改为the