Adjectives Comparatives/Superlatives

adjectives:
Young- younger- they are younger than us - youngest -  we are youngest than my mother

Small- smaller- my mother is smaller than me - smallest- my mother is the smallest family

Difficult - Difficult - studying english is more difficult than biology- difficult - the english is the most difficult  studying in my country

Cheap - cheaper - this shoes are cheaper than other shoes - cheapest -  this shoes are cheapest of this mall

Thin - thinner - Valeria is thinner than Juana - thinnest - Valeria is thinnest of school

Expensive - this laptop is more expensive than my computer - expensive - this laptop is most expensive of the shop

Old - older - my sister is older than me - oldest - my mother's jewels are the oldest family

Dirty - dirtier - my shirt is dirtier than my head - dirtiest - the streets of my city is the country's dirtiest

Clean - cleaner- my hands is cleaner than my head - cleanest - the streets of my city is the country´s cleanest