China recently tightened its waters controls near the Huangyan Island to prevent Chinesefishing boats from ______in the South China Sea.A.attacking B.having attacked C.being attacked D.having been attacked为什么选C?

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China recently tightened its waters controls near the Huangyan Island to prevent Chinesefishing boats from ______in the South China Sea.A.attacking B.having attacked C.being attacked D.having been attacked为什么选C?
China recently tightened its waters controls near the Huangyan Island to prevent Chinesefishing boats from ______in the South China Sea.A.attacking B.having attacked C.being attacked D.having been attacked为什么选C?

China recently tightened its waters controls near the Huangyan Island to prevent Chinesefishing boats from ______in the South China Sea.A.attacking B.having attacked C.being attacked D.having been attacked为什么选C?
只看句中prevent...from...(保护……免受……伤害),这里是说保护中国渔船以免在中国南海收到袭击,谓语动词attack的主语是渔船,所以用被动.收到袭击这件事还未发生,故不能选D.综上,选C.

已经说了，用被动，B选项是主动语态

这里from引导的状语是修饰boat的，boat和attack的关系是被动的，被袭击。所以用be+动词完成式。

prevent的用法是prevent…from doing,而这里的意思是防止中国渔船以免被袭击，所以用被动语态，被动语态是be+动词过去分词，这里是doing，所以是being attacked

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