08语法笔记中than比较问题和it指代问题求解｀

mlvince · 发表于 2011-4-4 22:26:16

1）（Between 1990 and 2000 the global economy grew more than it did during the 10,000 years from the beginning of agriculture） to 1950.
A.   Between 1990 and 2000 the global economy grew more than it did during the 10,000 years from the beginning of agriculture
B.   Between 1990 and 2000 the growth of the global economy was more than that during 10,000 years, from when agriculture began
C.   The growth of the global economy between 1990 and 2000 exceeds that which had been for 10,000 years from the beginning of agriculture
D.   The growth of the global economy between 1990 and 2000 exceeds what it has been for 10,000 years, from when agriculture began
E.   The growth of the global economy between 1990 and 2000 exceeded what it did for the 10,000 years from the beginning of agriculture
答案a。解释：A. Correct；it完全指代the global economy，并不特指1990到2000年之间的global economy
问。为什么这里it可以这样完全指代而不是特指？

2）类似例题链接：
（Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture） to 1950.
A) Since 1990 the global economy has grown more than it did during the 10,000 years from the beginning of agriculture
B) Since 1990 the growth of the global economy has been more than that during 10,000 years, from when agriculture began
C) The growth of the global economy since 1990 exceeds that which had been for 10,000 years from the beginning of agriculture
D) The growth of the global economy since 1990 exceeds what it has been for 10,000 years, from when agriculture began
E) The growth of the global economy since 1990 exceeds what it did for the 10,000 years from the beginning of agriculture.
Key: A
答案a为什么可以用did？？

mlvince · 发表于 2011-4-4 23:07:08

08语法笔记中than比较问题和it指代问题求解｀

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