Breakdown of Le client doit signer ce document aujourd'hui.
ce
this (before a noun)
le client
the client / the customer
devoir
to have to / must
le document
the document
Questions & Answers about Le client doit signer ce document aujourd'hui.
Why is signer not conjugated here?
When you use devoir with another action, only the first verb (doit) is conjugated to match the subject. The second verb stays in its full, unchanged dictionary form (signer), which is called the infinitive.
The translation says "has to", but could doit also mean "must"?
Why is the verb spelled doit and not dois?