Learn French: Elle danse sur le câble aussi gracieusement que moi. - She dances on the wire as gracefully as me.

In this lesson, we learn that to say "as [adverb] as", French uses the structure aussi + adverb + que. Here, we surround the adverb gracieusement (gracefully) with aussi and que to say "as gracefully as".

Could I use autant instead of aussi to mean "as" in this sentence?

No, because gracieusement is an adverb. You use aussi ... que when comparing adjectives or adverbs. You would only use autant que if you were comparing how much the action happens (for example, Elle danse autant que moi means "She dances as much as me").

How is the adverb gracieusement formed?

Most French adverbs are formed by taking the feminine version of an adjective and adding -ment. The French adjective for "graceful" is gracieux (masculine) and gracieuse (feminine). Adding -ment to gracieuse gives us gracieusement.

Why do we use moi instead of je at the end of the sentence?

After the word que in a comparison, you must use a stressed pronoun (like moi, toi, lui, elle). Even though we can say "as I do" in English, French strictly uses the stressed pronoun moi here, never the subject pronoun je.