There are three expressions that are really useful when comparing things:
as + adjective + as
👉 My house is as big as yours → Mi casa es tan grande como la tuya
👉 His car is as fast as mine → Su coche es tan rápido como el mĂo
👉 She is as pretty as you → Ella es tan guapa como tu
not as + adjective + as
👉 You are not as clever as I am → No eres tan listo como yo
👉 His car is not as fast as mine → Su coche no es tan rápido como el mĂo
👉 He isn’t as tall as you are → No es tan alto como tu
as + much + noun + as
👉 I deserve the promotion as much as you do → Me merezco el ascenso tanto como tu
👉 I don’t have as much money as you do → No tengo tanto dinero como tu
👉 They ate as much as we did → Comieron tanto como nosotros