Present Perfect: Adding 'ed' to Verbs Ending in 'e' & 'y'

Spelling rules for adding ed to form the past participle (Part 1) a. Verbs ending in 'e'. b. Verbs ending in 'y'.
Some regular verbs change their spelling when the ending ed is added to form the past participle.

a. Verbs ending in a silent e
When a regular verb ends in a silent e, only the letter d must be added in order to form the past participle. For example:

Infinitive	Past Participle
to close	closed
to move	moved
to please	pleased
to receive	received

b. Verbs ending in y
When a regular verb ends in y immediately preceded by a consonant, the y is changed to i before the ending ed is added. For example:

Infinitive	Past Participle
to study	studied
to rely	relied
to carry	carried

However, when a regular verb ends in y immediately preceded by a vowel, the y is not changed before the ending ed is added. For example:

Infinitive	Past Participle
to play	played
to convey	conveyed
to enjoy	enjoyed

Exercise:

Paying attention to the spelling of the past participles, fill in the blanks using the Present Perfect tense of the regular verbs shown in brackets. For example:
      She _________ hard. (to try)
      She has tried hard.

      He ___________ his friend. (to annoy)      He has annoyed his friend.

Answers:
1. have envied     2. has played      3. have applied      4. have fried     5. have employed 6. has sprayed      7. have hurried      8. have displayed      9. has destroyed     10. have relied