[求助]OG12 SC 14的D选项，关于have been sighted，请指教

huahuadream

14.Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun’s poles or equator.

(D)  appear as dark spots on the surface of the Sun, although never having been sighted at

D  Although usually introduces a subordinate clause, but there is no subject of the clause and “having been sighted” is not a complete verb phrase.


不太理解这个解释，have been sighted 这个短语有错吗？
先谢谢各位NN了~

eshopaholic

although is conjunction, which introduces a complete clause

qsdd

are are visible 手误？

huahuadream

确实是手误……已经改了，呵呵

huahuadream

although is conjunction, which introduces a complete clause

-- by 会员 eshopaholic (2010/11/8 15:03:02)

嗯，这点OG解释的前半段也讲了，我不明白的是后半段，就是我标了红色的地方，have been sighted 这个词组有错吗？为什么说它不是完整的动词词组呢？

nickddss

顶一下，跟楼主有同样的疑问

eshopaholic

although is conjunction, which introduces a complete clause

-- by 会员 eshopaholic (2010/11/8 15:03:02)

嗯，这点OG解释的前半段也讲了，我不明白的是后半段，就是我标了红色的地方，have been sighted 这个词组有错吗？为什么说它不是完整的动词词组呢？

-- by 会员 huahuadream (2010/11/8 15:26:35)

连词要跟句子，有主谓。having been sighted 是分词结构，不是完整的动词词组，不能做谓语

huahuadream

嗯嗯，明白了！谢谢！~

jbc88

although is conjunction, which introduces a complete clause

-- by 会员 eshopaholic (2010/11/8 15:03:02)

嗯，这点OG解释的前半段也讲了，我不明白的是后半段，就是我标了红色的地方，have been sighted 这个词组有错吗？为什么说它不是完整的动词词组呢？

-- by 会员 huahuadream (2010/11/8 15:26:35)

连词要跟句子，有主谓。having been sighted 是分词结构，不是完整的动词词组，不能做谓语

-- by 会员 eshopaholic (2010/11/8 15:40:56)

你说的不对.

prep题：

19.(25589-!-item-!-188;#058&002028)

Although unhappy with the high rent her company was paying for its suburban office building, the chief executive recognized rental rates for buildings in the suburbs as far lower than it typically is for property that is located within the city limits.

(A) rental rates for buildings in the suburbs as far lower than it typically is for property that is located within the city limits

(B) rental rates for buildings in the suburbs as being far lower than what the rates typically charged within the city limits had been for property located there

(C) rental rates typically being charged for property located within the city limits to be far lower as they typically were within the city limits for the property there

(D) that rental rates for buildings in the suburbs were far lower than rental rates typically being charged within the city limits for property located there

(E) that rental rates for buildings in the suburbs were far lower than those typically charged for property located within the city limits

although后面直接跟了unhappy with

李子木

although is conjunction, which introduces a complete clause

-- by 会员 eshopaholic (2010/11/8 15:03:02)

嗯，这点OG解释的前半段也讲了，我不明白的是后半段，就是我标了红色的地方，have been sighted 这个词组有错吗？为什么说它不是完整的动词词组呢？

-- by 会员 huahuadream (2010/11/8 15:26:35)

连词要跟句子，有主谓。having been sighted 是分词结构，不是完整的动词词组，不能做谓语

-- by 会员 eshopaholic (2010/11/8 15:40:56)

你说的不对.

prep题：

19.(25589-!-item-!-188;#058&002028)

Although unhappy with the high rent her company was paying for its suburban office building, the chief executive recognized rental rates for buildings in the suburbs as far lower than it typically is for property that is located within the city limits.

(A) rental rates for buildings in the suburbs as far lower than it typically is for property that is located within the city limits

(B) rental rates for buildings in the suburbs as being far lower than what the rates typically charged within the city limits had been for property located there

(C) rental rates typically being charged for property located within the city limits to be far lower as they typically were within the city limits for the property there

(D) that rental rates for buildings in the suburbs were far lower than rental rates typically being charged within the city limits for property located there

(E) that rental rates for buildings in the suburbs were far lower than those typically charged for property located within the city limits

although后面直接跟了unhappy with

-- by 会员 jbc88 (2010/12/3 10:39:07)

楼上的那位小盆友。。。

Although unhappy with the high rent her company was paying for its suburban office building

这句话有动词的：was不是么？

连词一定是加句子的，这个没有问题诶。。。