求英语强人解释复杂句子 句子很难
The media made a big deal of the fact that the DJIA rose above 9,000 for the first time in nearly eight months. The index was under 6,550 in early March, do the advance has been 38% since then, but the index is still well below 14,000 which it hit in October 2007. The Dow would have to rise 54% to get back to that point. That is an extraordinarily depressing figure given how far the market has already come and how hard it will be for it to rise to that number in what is still a harsh economic environment. 只要求分析这个句子“do the advance has been 38% since then”，从语法角度分析
do the advance has been 38% since then: since then:上句用现在完成时,表示自"in early March"以来. do :在词首有强调作用.加强ADVANCE(上升)的语气.
这个do是表示强调的作用。
do此次是否为误拼，或应该是so,这样才解释得通。The index was under 6,550 in early March, so the advance has been 38% since then, but the index is still well below 14,000 which it hit in October 2007. 这句话意思是：该指数在三月初低于6550点，因此从那时起提升了38@%，不过该指数还是远远低于2007年10月达到的14000点。
这句话是说道琼指数从三月的6550点，“从那时起，提升了38%”，到达目前的9000点。
做了38%以来进步呢。。。我就知道中文呢
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