Of service to you!

[Mark Chen]

Hi Teachers

Do you think that two sentences below are all correct?
And can you explain it or give me some comments

We look forward to the opportunity of being of service to you.
We thank you for the opportunity to be of service to you.

Thank you very much

Mark

[Mister Micawber]

Both are in use and grammatically correct. The first anticipates the opportunity; the second speaks of the opportunity already given.
_________________
Native English teacher at Mister Micawber's

[Mark Chen]

Thank you, Mister Micawber

Can you please explain the difference between two sentences below?
opportunity of being of service to you
opportunity to be of service to you

Mark

[Mister Micawber]

They are not sentences. They would mean the same if the sentence verb were the same.
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Native English teacher at Mister Micawber's