By 1970, according to a World Wildlife Fund report, only about 4500 tigers survived throughout the world-half of them in India.
请问这里的throughout the world-half of them什么意思?作什么成分?
网友把一个修饰survived 的地点状语throughout the world,跟一个名词性词组half of them 放在一起,让人分析。
正如网友zbr 所言:先区分一下连字符和破折号。
By 1970, according to a World Wildlife Fund report, only about 4500 tigers survived throughout the world —— half of them (were/lived)in India.
这是破折号。
half of them 是针对 4500 tigers 而言的。是破折号后面的句子(不完整)的主语,不在地点状语之列。补充完整应为:half of them lived/were in India.
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