BASE FORM (V1) + -ed

e.g. watch + ed --- watched

Spelling Rules

1. If the verb ends in e, only add -e

like --- liked

2. If the verb ends in a consonant and then y,

change the y to i, and add -ed

cry --- cried

3. If the verb is one syllable and ends in a 

consonant, double the final consonant, and add -ed

e.g. stop --- stopped

4. If the verb ends in a vowel and then y,

just add -ed  

e.g. enjoy --- enjoyed

NOTE THAT THE VERBS IN EACH OF THE FOUR CATEGORIES ALL END IN -ED

WHEN THEY ARE IN THEIR PAST SIMPLE FORM!

Give it a try and add your example of a verb in its base form and then put it into simple past!

Here is one more example! study --- studied / talk --- talked / plan --- planned / play --- played