moderngrasshopper

[placid flower]

Please be patient

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

Pro tip: you can rename the thread title with `.tr <thread name>`

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 bluff]

object pronouns don't change based on tense, except for imperative

[mystic lava]

Do you have more information or examples about what it is exactly that you’re confused about, @fossil halo?

[fossil halo]

Like, if you have the pronoun "y" or "en", how would you put that if it was in perfect tense, more specifically with negatives

[calm bluff]

when you say a "perfect" tense, do you mean compound tenses?

strictly speaking, the only "perfect" tense in modern French is the plus-que-parfait
but you might be saying "perfect" in the English sense

[mystic lava]

J’y avais mangé = I had eaten there

Je n’y avais pas mangé = I had not eaten there

J’en avais mangé = I had eaten some

Je n’en avais pas mangé = I had not eaten some/any

[wraith bane]

Maybe he is asking about the usage of both indirect and direct object pronoun in same sentence like

Je le lui ai donné.

[steep vault]

It’s possible that they follow British nomenclature with perfect being the passé composé

But yes, as KittiesForBreakfast’s and veil’s examples show, pronoun placement in compound tenses is placed before the relevant verb just like in simple tenses.
Je l’écoute / Je lui parle
Je l’ai écouté / Je lui ai parlé

What throws you off might be the past participle (écouté/parlé); I’ve seen a lot of learners putting the pronouns between the auxiliary verb (in this case avoir) and the past participle because well the pronoun is behind the verb so why should that change? Well, the relevant verb is always the auxiliary verb because the past participle is more like an adjective that went along for the ride, which is an important detail.

You talked about the future tense which is actually a simple tense (simple here meaning that its structure involves a conjugated verb instead of compound tenses where there is a verb plus another element):
Je l’écouterai / Je lui parlerai

I’m guessing that you meant the near-future or the « futur proche ». Here, the same rule applies; it’s just that the relevant verb is the infinitive, and not the helper verb « aller »:
Je vais l’écouter / Je vais lui parler

You might’ve been expecting « Je le vais écouter / Je lui vais parler » but that’s not the case. « écouter/parler » in this case is a whole verb instead of being an adjective that went along like past participles, so the pronouns go to them instead.