ferrying

易错句子The company is ferry tourists to the island.→正确表达The company is ferrying tourists to the island.

现在进行时由 be + 动词 -ing 构成；be 动词后不能接动词原形，ferry 的现在分词是 ferrying。

易错句子They ferried the tourists to cross the river.→正确表达They ferried the tourists across the river.

ferry 表示“把某人渡过河”时，用 across the river 作地点补语，不用 to do 表目的；to cross 会变成“为了让他们过河”的意思。

易错句子We took a ferrying to the island.→正确表达We took a ferry to the island.

ferry 作名词表示“渡船”，是可数名词；ferrying 是动词 ferry 的 -ing 形式，指“渡运”这一动作，不能用来指船。