• don't use the pendant, jusqu'à, fois parts (you can't use them with the imparfait)
• re-write your verbs into the IMPARFAIT (so: j'ai lu ---> je lisais ; j'ai dormi--> je dormais, etc.)
• add in one of the phrases showing repetitive, habitual (d'habitude, souvent, etc.)
• make any other tweaks you might need to, to make your sentence make sense)
• translate your NEW sentences, using "used to..."
EX:
Old sentence:
J'ai lu jusqu'à minuit. = I read until midnight.
NEW sentence:
D'habitude, je lisais un peu before going to bed. (You can throw in some English like that.)
= Usually, I used to read a little bit before going to bed.
Français 4: