Calling All Grammar Analysts

Hi Guys

I am new to this so please be nice to me .

I am trying to analyse a sentence that is an example of reported speech. I would like to get your feedback on how I can rewrite it into a direct speech.

This is the sentence:- "The IT teacher warned the children not to click on the link in any suspicious email."

Also how could I break it down into a syntax tree into components at:
a) sentence structure level
b) phrase level
c) word class level.


Any help would be greatly appreciated.