Breakdown of Il est possible qu'ils investissent dans ce projet.
être
to be
ils
they (masculine/mixed)
dans
in, inside
ce
this (before a noun)
Questions & Answers about Il est possible qu'ils investissent dans ce projet.
Why do we use the subjunctive after Il est possible que?
The expression il est possible que (it is possible that) expresses doubt or uncertainty, which is a classic trigger for the subjunctive mood. Because it is not a certainty that they will invest, we must use the subjunctive.
Is investissent in the subjunctive here? It looks exactly like the normal present tense!
Yes, it is in the subjunctive! For regular -ir verbs (like investir or choisir), the ils/elles form of the present subjunctive is identical to the present indicative. Both are ils investissent. You know it is the subjunctive here because of the trigger phrase il est possible que.
What if the sentence said Il est probable que (It is probable that) instead?
Why do we use dans here instead of à or en for "in"?
The verb investir (to invest) naturally takes the preposition dans when you talk about investing money or resources into a specific thing, like a project, a company, or real estate. Luckily, this maps perfectly to the English "to invest in".