11．Sometimesit might/may be helpful to use examples to explain abstract concepts．（helpful）有時(shí)候舉例也許有助于解釋抽象的概念．

分析 it might/may be helpful

解答 通過(guò)比較英漢句子，漢語(yǔ)句子的主語(yǔ)為"舉例"，對(duì)應(yīng)英語(yǔ)句子中的不定式to use example，而此處to use example卻在句后，可以推測(cè)此句應(yīng)用it作形式主語(yǔ)，真正的主語(yǔ)在后面--不定式to use example．因此答案為it might/may be helpful．
此處表示可能性，用情態(tài)動(dòng)詞may/might，helpful表示"有幫助的"．

點(diǎn)評(píng) 翻譯時(shí)注意情態(tài)動(dòng)詞might/may的用法，表示也許，可能．

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