He is taking his book.He can take his book.

问题描述:

He is taking his book.He can take his book.

be V-ing形式不一定是现在进行时,也可以表示将来的动作.
所以我认为从语法和逻辑角度讲应该翻译成
他要来拿它的书.他能拿走他的书