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问题: 英语

-----from other continents for million2 of years,Australia has many plants and animals not found in any other country in the world.
A Being separated B having separated
C having been separated D To be separated
什么时候用TO 开头 什么时候用v-ing 还有什么时候用being 最好可以通俗易懂

解答:

-----from other continents for million2 of years,Australia has many plants and animals not found in any other country in the world. 由于已经被和其他大陆/洲分离了数百万年,澳洲有许多世界任何其他地方没有的动植物。

A Being separated ing 形式表被动动作在进行

B having separated ing 的完成式主动表示主动动作已经发生

C having been separated ing 的完成式被动表示被动动作已经发生

D To be separated 不定式一般被动式表示将来的被动动作

根据句子意思,答案是C

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