Question

This is a vary interesting book. I'll buy it,_. A.however much it may cost 这题应该怎么讲？

Answer 1

However= No matter how 无论如何 后面+adj, / adv +主语+ 谓语 ，用来引导让步状语从句

however much it may cost, 无论它会花多少钱。。

其他例子， You can never succeed however hard you try. 无论你多努力，你都无法成功。
No matter how deeply I love you, you never care about me. 无论我爱你多深，你都不在乎我。

Answer 2

这本书很有意思。我会买下，不管它花费多少钱。