题目内容
2．热带雨林对调节气候起到了重要作用．Rainforests plan an important part inadjusting the climate．
分析 adjusting．
解答 答案：adjusting．表示调节用动词adjust，后可直接加宾语．前面的play an important part in表示在某方面起到重要作用，in是介词，后加名词代词或动名词，adjust的动名词adjusting，故答案是adjusting．
点评 介词后加上名词代词或动名词做宾语，这是固定用法．
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