Learn Swedish: Mina systrar använder aldrig tofflor inomhus. - My sisters never use slippers indoors.

Because toffel ends in an unstressed -el, it drops the e before adding the plural ending -or. This makes the word flow better and is a common rule for nouns ending in -el, -er, or -en.

Does systrar follow that same dropped-letter rule?

Yes! The singular form is syster. Since it ends in an unstressed -er, it drops the e before adding the plural ending -ar, becoming systrar.

Why do we use Mina instead of Min or Mitt here?

Possessive words in Swedish must match the noun they belong to. Because systrar is a plural noun, you have to use the plural form Mina.

Why does aldrig come after använder? In English we say "never use".

In a standard Swedish main sentence, the verb must be in the second position. The subject Mina systrar takes up the first position, so the verb använder has to come next. Adverbs like aldrig (never) or inte (not) usually come right after the verb.