French Phrase
Mon sac à dos est lourd aujourd'hui.
Meaning
Literally, "My backpack is heavy today." It can refer to the physical weight of the bag or, figuratively, to a day that feels burdensome.
When to use
Use this sentence when you want to comment on the weight of your backpack, for example after a long hike, a day of shopping, or when you’ve packed many books for class.
✦Grammar Breakdown
Monsacàdosestlourdaujourd'hui
Mon
Possessive adjective for masculine singular nouns; agrees with the noun it modifies.
sac à dos
A compound noun meaning "backpack"; the preposition à links the two nouns.
est
Third‑person singular present of the verb être; used for description and identity.
lourd
Masculine singular adjective meaning "heavy"; must agree with the gender and number of sac à dos.
aujourd'hui
Adverb of time meaning "today"; placed at the end of the sentence for emphasis.
🗨In Conversation
Mon sac à dos est lourd aujourd'hui.
My backpack is heavy today.
Tu as mis trop de livres dedans ?
Did you put too many books in it?
✕Common Mistakes
Mon sac à dos sont lourd aujourd'hui.
The verb must agree with the singular subject "sac à dos"; use "est" not "sont".
Mon sac à dos est lourde aujourd'hui.
The adjective must match the masculine noun "sac"; use "lourd".
Mon sac à dos est lourd aujourd'huis.
Do not add an extra "s"; the correct spelling is "aujourd'hui".
↔Alternatives
Mon sac est lourd aujourd'hui.
My bag is heavy today.
Je trouve mon sac à dos très lourd aujourd'hui.
I find my backpack very heavy today.
Aujourd'hui, mon sac à dos pèse beaucoup.
Today, my backpack weighs a lot.
Cultural Tip
In French, "sac à dos" is the standard term for a backpack, unlike the English "backpack". The adjective "lourd" can also be used metaphorically to describe a heavy workload or a stressful day, so context matters. In casual speech, "aujourd'hui" is often pronounced /o.ʒuʁ.dɥi/ with a slight glide between the two syllables.

