aussi

Meaning

Adds, after the verb. AT THE START of a sentence it changes meaning and states consequence.

Position and punctuation

within the sentence · no comma

Example

Le musée est gratuit le premier dimanche ; la bibliothèque l'est aussi.

The museum is free on the first Sunday; so is the library.

In the DELF

the B1 letter · the B2 oral presentation

The trap

AT THE START of a sentence, aussi means donc and INVERTS the subject: "Aussi la mairie a-t-elle reporté le projet". Without the inversion the sentence reads as a misplaced addition, and that is a C1 mistake.