GWD-17-Q32

amyding85

（1）     GWD-17-Q32

Navigators have known for thousands of years that the ocean has variable currents, but it is only in the last half century that a reasonably clear picture has emerged of the patterns and causes of ocean currents.

 

A.        a reasonably clear picture has emerged of the patterns and causes of ocean currents

B.        a reasonably clear picture of the patterns of ocean currents and their causes have emerged

C.       a reasonably clear picture emerged of ocean currents, their patterns and the causes of them

D.       there have emerged a reasonably clear picture of the patterns of ocean currents and what caused them

E.        there had emerged a reasonably clear picture of the patterns of ocean currents and their causes

答案是A怎么解释呢？划线部分翻译过来是什么意思呢？

amyding85

ding

chnp

 A的正常语序：a reasonably clear picture of the patterns and causes of ocean currents has emerged。因为of后面的部分太长所以放在后面，保持句子平衡。

立小夏

额。。。那位什么是 "has emerged"? A中的句子主语 不是a reasonably clear picture (of the patterns) and causes (of ocean currents)么？。。。

kadin5568576

同意楼上的，对于A的句子结构哪位大牛能出来给讲讲，万分感谢

tracywang320

不明白，好想求解

我不爱养宠物

立小夏 发表于 2010-8-3 16:27
额。。。那位什么是 "has emerged"? A中的句子主语 不是a reasonably clear picture (of the patterns) and ...

正因为主语是 a （reasonably）（clear）picture of（the patterns and causes of ocean currents）  所以用has  主语是 a picture 其他是修饰语 我是这么理解的。