That is, you have to use the appropriate form of the verb to be relative to the subject, then add (ING) to the main verb.

Example : To Negotiate

I am negotiating

You are negotiating

He/She is negotiating

We are negotiating

You are negotiating

They are negotiating

– I ( Subject)

– Am ( the verb to be that corresponds with I)

 – Negotiating ( negotiate verb ), ing ( PCT)