it kept the americas from being discovered.from后面应该是动名词,?只有be加了ing,而discover不加ing
问题描述：
it kept the americas from being discovered.from后面应该是动名词,?只有be加了ing,而discover不加ing
答
being discovered 是 be discovered 这个被动语态的ing形式.由于句意需要被动语态,而介词from后面又要加动词的ing形式.所以要用be done的ing 形式,即being done