[Grammar] To be truly brilliant, an essay needs to be ...

[jigneshbharati]

1.To be truly brilliant, an essay needs to utilise the right language. What parts of speech to be belongs to and how to use it?
2.Be sure to give your full name, phone number, and location. Be as detailed as possible.
Please explain the use of be in both the sentences. Thanks in advance

Regards,
Jignesh

 

[Tarheel]

Say:

What part of speech does "to be" belong to?

 

[Tarheel]

Say:

To be truly brilliant an essay needs to use the right language.

And:

Please explain the use of "be" in both sentences.

 

[Tarheel]

What is the right language for an essay?