疑难语法5

寂寞的自由 · 发表于 2004-2-8 03:48:00

For some birds the sense of smell appears to play a role in navigation, since pigeons with surgically removed olfactory nerves were found to have increased difficulties in homing.
C) have been found to have increased difficulty

自由的疑惑是：increased同increasing 有什么区别呢？那个是频率最高的呢？什么情况下分别适用这两个词呢？感谢大家

橙子 · 发表于 2004-2-8 03:57:00

过去分词表示结果,已经完成的动作
现在分词表示延续,正在进行的动作

寂寞的自由 · 发表于 2004-2-8 04:52:00

谢谢楼上朋友的解答，自由明白了，感谢

疑难语法5

疑难语法5

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