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aimcreate · 发表于 2004-3-11 17:28:00

1. According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millennia indicate the possibility that everyone alive today might be descended from a single female ancestor who lived in Africa sometime between 140,000 and 280,000 years ago.

(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who

(B) indicate that everyone alive today might possibly be a descendant of a single female ancestor who had

(C) may indicate that everyone alive today has descended from a single female ancestor who had

(D) indicates that everyone alive today may be a descendant of a single female ancestor who（D）

(E) indicates that everyone alive today might be a descendant from a single female ancestor who

本题是因为pattern决定indicate加s么，还有为什么选择D，E怎么了

smm969672 · 发表于 2004-3-11 17:59:00

the pattern of changes 中，pattern为中心词，为单数。E中might时态错，因讨论的是可能性，用一般现在时

Lucky0506 · 发表于 2005-7-13 14:22:00

讨论的是可能性就要用一般现在时吗？

难道，在表示不确定的猜测的时候要用might呢？

5~~，对于may 和 might 到底如何用不懂。请大家指教。

潜龙勿用 · 发表于 2005-7-13 15:54:00

以下是引用aimcreate在2004-3-11 17:28:00的发言：

1. According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millennia indicate the possibility that everyone alive today might be descended from a single female ancestor who lived in Africa sometime between 140,000 and 280,000 years ago.

(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who

(B) indicate that everyone alive today might possibly be a descendant of a single female ancestor who had

(C) may indicate that everyone alive today has descended from a single female ancestor who had

(D) indicates that everyone alive today may be a descendant of a single female ancestor who（D）
(E) indicates that everyone alive today might be a descendant from a single female ancestor who
本题是因为pattern决定indicate加s么，还有为什么选择D，E怎么了

E主要错在词的搭配上: a descendant from is unidiomatic BUT be descended from is idiomatic.

如果把E改为:indicates that everyone alive today might be descended from a single female ancestor who 就没问题了.

[此贴子已经被作者于2005-7-14 8:03:21编辑过]

Lucky0506 · 发表于 2005-7-13 17:09:00

潜龙的意见是，用may/might都可以，是吗？

andrew_li · 发表于 2005-7-13 20:05:00

may and might. It may rain. It might rain. What’s the difference? Just as could is the past tense of can, might is the past tense of may: We thought we might win the tournament. But might can also be used as a substitute for may to show diminished possibility. Thus, saying We might go to the movies means that the likelihood of going is somewhat less than if you say We may go to the movies. When used to express permission, might has a higher degree of politeness than may. Thus, Might I express my opinion conveys less insistence than May I express my opinion.

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