French Phrase
Non, je crois que je l'ai perdu.
Meaning
The speaker is denying something and stating that they think they have lost the item in question. The “l'” refers to a previously mentioned masculine singular object (e.g., “le stylo”).
When to use
Use this sentence when someone asks you about an object you cannot find and you want to say you probably lost it. It works in informal and semi‑formal conversations.
✦Grammar Breakdown
Nonjecroisquejel'aiperdu
Non
A simple negative answer, equivalent to “No”.
croire (present)
Verb of belief; conjugated in the present tense (je crois).
que (subordinating conjunction)
Introduces the subordinate clause that follows.
l' (direct object pronoun)
Short for “le”, replaces a masculine singular noun already mentioned.
passé composé with avoir
Formed with the auxiliary “avoir” + past participle “perdu”. When the direct object pronoun precedes the auxiliary, the past participle agrees with it.
agreement of past participle
Because the pronoun “l'” stands for a masculine singular noun, the past participle stays “perdu”. If it were feminine, it would become “perdue”.
🗨In Conversation
Tu as vu mon stylo ?
Did you see my pen?
Non, je crois que je l'ai perdu.
No, I think I lost it.
✕Common Mistakes
Non, je crois que je l'ai perdue.
The past participle must agree with the gender of the object. Use “perdu” for masculine (le) and “perdue” for feminine (la).
Non, je crois je l'ai perdu.
The conjunction “que” is required to link the two clauses.
Non, je crois que je le ai perdu.
When a direct‑object pronoun precedes the auxiliary, it must be contracted to “l'”.
↔Alternatives
Non, je pense que je l'ai perdu.
No, I think I lost it.
Non, je crois l'avoir perdu.
No, I think I lost it.
Non, je crois que je l'ai égaré.
No, I think I misplaced it.
Cultural Tip
In French, “croire” and “penser” are both used to express belief, but “croire” is slightly less certain than “penser”. Also, remember the agreement rule for past participles with “avoir”: the participle only agrees with a preceding direct‑object pronoun, not with the subject.