having +V-ed修饰的时候表示什么意思呀？

QHM199

我做700-800 题的时候，有一题如下,E选项有个having erupted,解析说这个 "having sporadically erupted" incorrectly places this modifierin the past tense, implying that lava no longer erupts through volcanoes. 可是这个不是现在完成时么？不是延续到现在吗？

Geologists once thought that the molten rock known as lava was an underground remnant of Earth's earliest days, sporadically erupting through volcanoes, but they now know that it is continuously created by the heat of the radioactivity deep inside the planet.


A. was an underground remnant of Earth's earliest days, sporadically erupting

B. had been an underground remnant of Earth's earliest days and sporadically erupted

C. was an underground remnant of Earth's earliest days, which sporadically erupted

D. would be an underground remnant of Earth's earliest days that sporadically erupted

E. was an underground remnant of Earth's earliest days, having sporadically erupted

一起从头开始

“having sporadically erupted” 是修饰modifier, 用having强调erupt发生在主句的时态之前, 所以这里用having语义逻辑上就错了.

QHM199

HoganTong 发表于 2019-4-22 15:11
现在完成时的所谓“延续到现在”指的是这个动作的影响延续到现在并可能继续影响未来，不是动作本身延续到现 ...

谢谢~~解除了我的疑惑

HoganTong

现在完成时的所谓“延续到现在”指的是这个动作的影响延续到现在并可能继续影响未来，不是动作本身延续到现在。描述自然规律几乎不可能用完成时，因为既然是规律就一定是动作延续到现在（以及未来）

watermelonzec

假设E正确的话 having erupted就表示了erupt的这个动作发生在 the molten rock known as lava was an underground remnant of Earth's earliest days这件事情之前，并没有任何表示时间前后的状语，说这两个动作的前后。 所以用having erupted进行修饰不对。不知道能否解决你的问题。