Be who you want to be? What are the terms? Be specific.

What has many uses in English, so there are many translations. To translate what or what clauses well, we need to know the part of speech, function and meaning of what first. Generally speaking, what can be used as pronouns, conjunctions, adverbs and adjectives. Therefore, what can be used as a sentence component such as subject, object, predicative and attribute, while what clause can be used as an adverbial clause such as concession or way.

Guiding predicative clause

These two and what can guide predicative clauses? That doesn't constitute any sentence element in the clause, but it can't be omitted usually? What is the subject in the clause? Object? Predicate and object complement can not be omitted? For example:

1. Mary is not what she used to be. Mary is not who she used to be? (What is used as predicative in predicative clauses)

The question is what we should do to stop him from going. The question is how can we stop him from going? What is used as an object in predicative clauses

The reason why he didn't come today is that his mother is ill. The reason why he didn't come today is that his mother is ill? That will only lead to predicative clauses, without any elements.