Compound sentences have two or more independent clauses. Clauses are usually joined together by a comma followed by a conjunction (et [and], mais [but], ou [or]). They may also be joined by a semicolon or a colon:
Nous ne savons
pas où elle est et nous ne l'avons pas vue depuis
hier.
(We do not know where she is and we have not seen her since
yesterday.)
Complex sentences are made up of an independent clause and one or more subordinate clauses:
Si j'avais plus de temps, je suivrais un cours
d'art.
(If I had more time, I would take an art course.)
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