Tout doucement

[copper vale]

Please be patient

Our volunteers look into many questions every day; sometimes it takes them a little while to answer.

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Make it descriptive, including relevant context, but also to the point. This way you improve your chances of getting a more relevant and specific answer.

[calm vault]

No, it sounds odd even

If the sentence was negative though: "parce qu'il n'y a personne qui le parle que je connaisse bien". It would work

[ionic crown]

oh okay

hmm i see

[ionic crown]

@swift willow

when using negative after que

do i always need to use subjunctive after que? with negations

je pense que je peux pas le faire
or
je pense que je puisse pas le faire. idk

ik someone told me some about certainty but i really mean in general after que's

[swift willow]

no

[calm vault]

Je ne pense pas que je puisse le faire or je pense que je ne peux pas le faire.
The verbs that trigger the subjunctive are verbs expressing an opinion + negation, a desire, a wish, necessity, an obligation, expectation...
You should find resources about that rather easily online

[ionic crown]

yeah i did study it and ironically its quite optional with other verbs as the subjunctive can just show a lack of certainty

and not necessarily always needed with opinion all the time

[calm vault]

Yeah with certain verbs it's optional not always though

[ionic crown]

i mean, does all verbs via negation force subjunctive ?

[calm vault]

No, only those expressing an opinion

[ionic crown]

deepL says it works

but eh

im pretty sure i saw verbs that doesn't need negation to do it

[calm vault]

Savoir expresses certainty

That's why

The subjunctive is about uncertainty

[ionic crown]

hmm ig its different than English because someone can say i dont know and be unsure

thanks

ngl having to use subjunctive after a verb because i negated it isa extra layer of thinking but eh ima just adjust it to my vocab. I always used the reg tenses there so i was probs always understood but just sounded a bit off regardless of how fluid the speech was

[calm vault]

You'd say "je ne sais pas si je peux voler"

If you wanted to express uncertainty here

[calm vault]

Tbh the subjunctive is not even understood by natives and is slowly disappearing so don't trouble yourself too much

[ionic crown]

bro made me feel better

[swift willow]

Slowly disappearing? Where

[swift willow]

The only case I can think of where subjunctive has changed is "après que" gaining the subjunctive in everyday speech, not the other way around

[calm vault]

In general. People don't know how to use it and don't use it when they should.
A sentence like "Je ne pense pas qu'il est là" is not that unusual of a mistake to hear. I've heard a uni professor replace the 2nd person plural form of the subjunctive with the indicative. "Il faut que vous apprenez" (just an example not an exact quote but he said stuff like that enough times for me to remember it. And my friends didn't notice until I told them).
Also I noticed that people tend not to conjugate "c'est". The plural "ce sont" gets replaced by the singular and the subjunctive by the indicative.
"Je pense pas que c'est la solution" is also not that uncommon of a mistake to hear.

The loss of the imperfect and pluperfect of the subjunctive mode creates very awkward sentences if you replace them with the present or past tenses.

Je ne pense pas qu'il fût à la fête > je pense pas qu'il était à la fête.
"Je ne pense pas qu'il soit/ait été à la fête" simply don't mean the same thing. So you do get rid of the subjunctive altogether in that example and it's not limited to specific speakers.

[calm vault]

Some also people omit "que" in some completive clauses: "je pense il est pas là". From what I noticed the verb in the main clause is rarely negated in that kind of structure (?je pense pas il est là). But in any case the omission of "que" completely prohibits the use of the subjunctive. I think in that case it's also a matter of register

[ionic crown]

@swift willow ion gone lie bro making a strong point

[swift willow]

its other tenses are disappearing but I'm pretty sure there are cases of it being lost in certain areas and popping up in others
maybe in the long run it's fading, but incredibly slowly, and it's still quite strong in French. Perhaps not as much as some other languages, but far more than English subjunctive, for example

[calm vault]

Alright I'll qualify my statement for you: the use of the subjunctive is slowly shrinking. I cannot assert for a fact that it's going to disappear for certain in a distant future and that wasn't my point either. It was an overstatement because my main point was to tell @ionic crown that they shouldn't worry too much about having difficulties to understand how to use the subjunctive properly. It's a difficult mode to understand even for natives.
Apart from the example you provided with "après que" I can't think of other cases where the subjunctive is gaining new uses and values. But I have provided examples and (emerging) structures where the subjunctive has become impossible to use. I don't find the comparison with English to be fair. It's not a romance language anyway and, I mean, if that's your standard for rarity then that's fine. But I don't tend to do that, personally. I find the comparison with other romance languages to be much more relevant. I could tell you for example that in italian the subjunctive has more uses and values. Any verb expressing an opinion, whether negated or not, requires the subjunctive to be used in a subordinate clause: penso che lui sia bello (je pense qu'il est beau).
You can also find sentences like: Magari io fossi ricco ! (Si seulement j'étais riche !) where the subjunctive is used in a main clause which never happens in French which shows that it has a moral marginal position comparatively.
All of that isn't to discourage a learner from learning the subjunctive, which I love btw. My point was to help Tout doucement feel better which he said I did so I'm glad I could help.