のに and のが. How do they differ in the context below?


> この本は読む **のに** 簡単だ。This book is easy to read.  
>  この本は読む **のが** 簡単だ。This book is easy to read.

I was wondering if anyone could explain to me how these two readings differ in
nuance?

When there is a sentence like the one below I can see how it would be
different if が was used.

> 彼女は夕食を料理する **のに** 忙しい。 She is busy cooking dinner.

It seems like it is saying "She is busy in the act of cooking dinner"

So would it be that のに focuses on being IN the act whereas のが just connects
the following attribute to the preceding verb?

BONUS QUESTION: can you say 料理するのには忙しい ??




As I understand it "no ni" highlights the noun, and "no ga" is highlighting
the action. So

この本は読むのに簡単だ。

means that the book is simple to read. The book is written in a nice way.

In the case of "no ga" you are highlighting the action. So

この本は読むのが簡単だ。

actually means "the act of reading this book is simple". The book has a large
font perhaps, or the pages are not stuck together.

Similarly:

声を出して読むのがうまい - good at reading aloud

ベッドで読むのによさそうな物 - a thing that is good bedtime reading

