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miguel29 · 发表于 2010-11-6 07:31:29

1，Stars like the sun can continue to shine steadily for billions of years because its light and heat are produced by nuclear fusion, in which titanic releases of energy result in the loss of only tiny amounts of mass.
(A) its light and heat are produced by nuclear fusion, in which
(B) nuclear fusion produces its light and heat, in which
(C) nuclear fusion produces their light and heat, where
(D) its light and heat are produced by nuclear fusion, where（E）
(E) their light and heat are produced by nuclear fusion, in which
这题为什么不可以选C？不是说主动语态优于被动语态吗？

2，Art museums do not usually think of their collections as capital or consider the interest income that would be generated if a portion of the capital would have been invested in another form.
(A) be generated if a portion of the capital would have been
(B) have been generated if a portion of the capital would have been
(C) be generated if a portion of the capital were
(D) be generated if a portion of the capital was（C）
(E) be generated if a portion of the capital had been
a portion 为什么谓语用复数？

2，Art museums do not usually think of their collections as capital or consider the interest income that would be generated if a portion of the capital would have been invested in another form.
(A) be generated if a portion of the capital would have been
(B) have been generated if a portion of the capital would have been
(C) be generated if a portion of the capital were
(D) be generated if a portion of the capital was（C）
(E) be generated if a portion of the capital had been
a portion 为什么谓语用复数？

sdcar2010 · 发表于 2010-11-6 07:39:51

1，Stars like the sun can continue to shine steadily for billions of years because its light and heat are produced by nuclear fusion, in which titanic releases of energy result in the loss of only tiny amounts of mass.
(A) its light and heat are produced by nuclear fusion, in which
(B) nuclear fusion produces its light and heat, in which
(C) nuclear fusion produces their light and heat, where
(D) its light and heat are produced by nuclear fusion, where（E）
(E) their light and heat are produced by nuclear fusion, in which

The problem is with the pronoun "its". If the sentence refers to STARS, "its" should be changed to their

In addition, "where" or "in which" should modify "nuclear fusion" instead of "light and heat".

gkast · 发表于 2010-11-6 07:48:31

if ... were 因为这是一个假设，跟单复数无关。
If I were you, I would go.
I would go if I were you.
(a portion) would be generated if a portion of capital were invested...

sdcar2010 · 发表于 2010-11-6 07:48:57

Art museums do not usually think of their collections as capital or consider the interest income that would be generated if a portion of the capital would have been invested in another form.
(A) be generated if a portion of the capital would have been
(B) have been generated if a portion of the capital would have been
(C) be generated if a portion of the capital were
(D) be generated if a portion of the capital was（C）
(E) be generated if a portion of the capital had been
a portion 为什么谓语用复数？

Because it uses SUBJUNCTIVE mood or 虚拟语气 (would have been).

miguel29 · 发表于 2010-11-9 09:42:19

解释的非常清楚，谢谢啊

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