練習(xí)步驟：
　　step1：劃分句子結(jié)構(gòu)，找句子主干
　　step2: 確定修飾詞，修飾短語(yǔ)或修飾從句的修飾關(guān)系
　　step3: 確定代詞指代對(duì)象
　　劍橋雅思9
　　Reading Passage 1
　　長(zhǎng)難句：Incorporating potassium dichromate and alcohol into the aniline at various stages of the experimental process, he finally produced a deep purple solution.