复习prep08的时候发现里面有一道引申题(好像出自prep07):
Since 1990 the globaleconomy has grown more than it did duringthe 10,000 years from the beginning of agriculture to 1950. A) Since 1990 the global economy has grown morethan it did during the 10,000 years from the beginning of agriculture B) Since 1990 the growth of the global economyhas been more than that during 10,000 years, from when agriculture began C) The growth of the global economy since 1990exceeds that which had been for 10,000 years from the beginning of agriculture D) The growth of the global economy since 1990exceeds what it has been for 10,000 years, from when agriculture began E) The growth of the global economy since 1990exceeds what it did for the 10,000 years from the beginning of agriculture. Key: A
我的问题是: 曼哈顿第五版十三章有这么一个关于助动词的语法点:
Helpingv应当和前面时态保持一致。但当需要时态变化时,不要用助动词,写出新时态的动词。 错:I have never seen an aardvark, but last year myfather did. 对:I have never seen an aardvark, but last year myfather saw one.此处就不能用has替代
那么A当中has grown后面出现的did应该是使用错误的呀,但他是正确选项,请教各位这个语法点是不是绝对的!谢谢!
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