Please read the following sentence:
Microsoft CEO Steve Ballmer is planning his retirement in the next nine months from the software giant he helped build.
Would you consider "helped" a Non-Modal verb?
If yes, then would you please tell me why?
Please read the following sentence:
Microsoft CEO Steve Ballmer is planning his retirement in the next nine months from the software giant he helped build.
Would you consider "helped" a Non-Modal verb?
If yes, then would you please tell me why?
Just because one verb can follow another in the bare infinitive form does not automatically make the former verb a modal, nor does the lack to the to particle somehow make the latter verb a finite verb.
Help is not a modal verb because modal verbs are not subject to changes of inflectional morphology due to person or number (or arguably by tense). Since helped has been inflected, it cannot be a modal verb.
See this answer for more.
Since modals cannot inflect, they have no -ing form: one cannot saying **mighting* or **musting* or **oughting* the way one can say helping or stopping or making, thus further showing that help cannot be a modal.