In the sentence:
Isabel Burnell wanted to impress her classmates with the new doll's house.
It is a passive type of a sentence, meaning the subject is indirect, with comma, or uses ‘by’ or im this case ‘with’.
Here, the verb used is past while in active sentence, the verb used is in present tense and is direct in giving out information. If the sentence is changed into active form of the sentence, it could be: Isabel Burnell’s new doll's house impressed her classmates.