Breakdown of Non che mi opponga alla proposta, ma il progetto è troppo gravoso.
essere
to be
ma
but
non
not
troppo
too, too much, too many
Questions & Answers about Non che mi opponga alla proposta, ma il progetto è troppo gravoso.
Why is opponga in the subjunctive rather than the indicative?
The phrase non che triggers the subjunctive because it introduces a rejected cause. You are bringing up a hypothetical reason just to deny that it is the real reason. Whenever you use non che to say 'not that...', you must use the subjunctive mood.
Why is the second verb, è, in the indicative instead of the subjunctive?
Where does mi opponga come from, and why is there a mi?
It comes from the pronominal verb opporsi (to object or to oppose). In Italian, you literally express this as 'I oppose myself to something'. Since the subject is 'I', you must use the reflexive pronoun mi before the conjugated verb.
Why do we use alla before proposta?
The verb opporsi requires the preposition a to indicate what you are objecting to (opporsi a qualcosa). Because proposta is a feminine singular noun, you combine a with the definite article la to get the articulated preposition alla.