One way to make a comparison is with expressions of equality. For example, you might say that your new apartment is just as spacious as your previous one. Or that your new car is just as slow as your old one. This idea can be expressed in Spanish by using the construction, tan+adjective/adverb+como. When using an adjective you need to be sure it agrees with the first noun mentioned. For example:

	El pollo es tan sabroso como la carne.	Chicken is as tasty as meat.
	La carne es tan sabrosa como el pollo.	Meat is as tasty as chicken.

Adverbs do not show agreement:

La carne se prepara tan rápido como el pollo.

Meat is prepared as quickly as chicken (is).

When nouns are involved the construction is slightly different:
tanto/tanta/tantos/tantas+noun+como.

Tanto agrees with the noun in number and gender:

	Tienes tantos libros como una biblioteca.	You have as many books as a library (does).
	Nosotros necesitamos tanta atención como ellos.	We need as much attention as they do.

And with verbs the construction is: verb+tanto como. Expressions with verbs show no agreement:

	Mi hermanita nada tanto como un pez.	My little sister swims as much as a fish.
	Juan trabaja tanto como yo.	Juan Works as much as I do.