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This massive population began a century earlier as a mere tw

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This massive population began a century earlier as a mere twelve pairs of imported rabbits that reproduced quickly and developed into a major problem.
请问,这里的 as a mere twelve paris of imported rabbits,在句子中起什么作用,
这里 因为 a mere twelve pairs of imported rabbits that reproduced quickly and developed into a major problem.不是个完整的句子,只能是介词短语作状语 表当做,可看整个文章,This massive population began as rabit,这个庞大的人口以兔子开始,有点奇怪 请高手明鉴之
英语高手!是关于英语语法的问题!在线跪求中!
回答:
1)你说得很对,as a mere twelve pairs of imported rabbits that reproduced quickly and developed into a major problem 是个介词短语做状语,它是用来修饰说明谓语动词begin的,而 as 在这里的意思是“作为”,as在此处不=when;
例如:He began to work as a driver when he waw only 18 years old.他18岁就开始干司机.
2)population:你把 population理解为“人口”是不对的,该单词在本句中的意思是指:a particular group or type of animals living in a particular place,(某一特定地方的)特定的“动物群”,此处是指“兔群”,而不是指“人口”;
3)began:创立;作为…开始(存在);
那么该句意思可译为:
这个庞大的兔群是在一个世纪以前起始的,是(当时)仅有的12对进口的兔子,它们迅速繁殖并发展成一个大问题.