Questions & Answers about No tires el pañal al piso.
Why does tirar change to tires here?
Wait, doesn't an -es ending usually belong to -er or -ir verbs?
Yes, in the normal present tense! But negative commands do a vowel swap. Verbs ending in -ar take an -es ending (no tires), while -er and -ir verbs take an -as ending (like no comas for don't eat).
Why does it say al piso instead of en el piso?
You can often use either, but al piso literally means to the floor. It is very common with verbs involving motion or direction, like throwing. Remember that al is the mandatory contraction of the preposition a (to) and the article el (the).
I've seen the word suelo for floor. Can I use that instead of piso?