Adverbial form: 楽しみに or 楽しみで?


I'm quite familiar with the different uses of the particles に and で. However,
right now I'm stuck, because I want to say the following in Japanese, and as I
understand it, either one of these particles could provide the appropriate
adverbial meaning if attached to the end of 楽しみ.

I would like to say in Japanese:

I will explain [i.e., make an explanation] it [to you] with pleasure.

Which one of the following is correct?

楽しみに説明します。 or 楽しみで説明します。




For a Japanese equivalent to the phrase, "It is my pleasure to explain it to
you," here are some suggestions:

> 喜んで教えます。
>
> 喜んで説明します。
>
> 喜んでお教えします。(with honorific)
>
> 喜んでご説明します。(with honorific)
>
> 喜んでご説明致します。 (more polite)
>
> 喜んでご説明させていただきます。(most polite)

楽しみに(する) is usually translated as "to look forward to something."

喜んで/よろこんで is an adverb meaning " with pleasure ..." and is thus the more
fitting choice for your question.

よろこんで is from the verb よろこぶ meaning "to rejoice/to take pleasure in."

