İngilizcede fiiller düzenli ve düzensiz olarak ikiye ayrılır.

REGULAR VERBS (Düzenli Fiiller)
Düzenli fiillerin ikinci halini kullanmak için fiilin sonuna "-ed" takısı eklenir.

SPELLING RULES
1. Add "-ed" (to most regular verbs)
open-opened
help-helped
stay-stayed

2. Add "-d" (after a consonant + e)
close-closed
like-liked
live-lived

3. Add "-ied" (after a consonant + y, change the "-y"  to "-i" and add "-ed"
carry-carried
study-studied
cry-cried

4. Add "-ed" (after a wovel + a consonant,double the consonant and add "-ed" for one syllable verbs only)
stop-stopped
beg-begged
rub-rubbed