Breakdown of D'où vient ce pigment ? On doute qu'il soit vieux.
être
to be
il
he
on
one / we (informal)
ce
this (before a noun)
Questions & Answers about D'où vient ce pigment ? On doute qu'il soit vieux.
Why do we use soit (the subjunctive) instead of est here?
The phrase douter que (to doubt that) expresses uncertainty, which is a classic trigger for the subjunctive mood. Therefore, we must use soit, the subjunctive form of être.
How would the second sentence change if we wanted to say 'We suspect that it is old'?
You would use the reflexive verb se douter que. Because se douter que means you actually believe or suspect something is true, it takes the indicative mood instead of the subjunctive. The sentence would become: On se doute qu'il est vieux.
In the first sentence, why is the verb placed before the subject (vient ce pigment) without a hyphenated pronoun?
Why does the second sentence use il instead of ce (as in ce soit vieux)?