Question

句子成分！！！！！！！！！！！

The angle subtended at the eye by this virtual enlarged image is greater than would be the angle subtended by the object if it were at the normal viewing distance.
句中would be指的什么？什么成分。应该有省略部分，请指出。
为什么than后面的句子要倒装？The angle ...than the angle would be subtended by the object if it were at the normal viewing distance.

Answer 1

句子成分是指句子的组成成分，也叫句法成分。在句子中，词与词之间有一定的组合关系，按照不同的关系，可以把句子分为不同的组成成分。句子成分由词或词组充当。汉语： 现代汉语里一般的句子成分有八种，即主语、谓语、宾语、动语，定语、状语，补语和中心语。英语：句子的组成部分，包括主语、谓语、宾语、表语、定语、状语、补足语和同位语八种。另外，古代汉语中的׏p>

Answer 2

than也可以用作关系代词，引导定语从句，但要注意主句中必须有比较级字样和than前后呼应。例如：
(9)He smoked more (fewer) cigarettes than (he bought.) were normally available.他吸的香烟比他买的（弄到的）要多（少）。这里than在语法功能上相当于that/which的功能，但是这里不能改成后者，因为主句中有比较级more。
请再看下列的例句：
(10)We often advise him not to drink more wine than is good for his health. 我们经常劝他为了身体健康不要喝过量的酒。
(11)He often sat in a small bar drinking considerably more wine than was good for his health.他经常坐在小酒馆里，喝过量的酒。这不利于他的身体健康。
(12)To understand the situation completely requires more thought than has been given thus far.要彻底理解这种局势需要作比迄今为止更多的思考。

Answer 3

在眼睛的角度对向这个虚拟影像放大大于将由对象的角度对向的，如果它在正常观看距离的。

Answer 4

would be the angle subtended by the object 在这里是个倒装句 没有省略。为了避免前面的重复 be subtended 表被动