Please read the Write My Memoirs blog post immediately preceding this one. Now that you have a handle on what a past participle is and, I’m going to assume, you pretty much know how to use the present and past tenses, we can move on to the difficult tenses that use past participles. Let’s example three:
PRESENT PERFECT TENSE
Conveys action that either began in the past and continues today or took place at an indefinite time.
Formation: has or have + the past participle of the verb
I have cooked [present perfect tense] dinner but have not served [present perfect] it yet.
You own [present tense] many books and have passed [present perfect] down the joy of reading to your children.
I sent [past tense] an email to my friend, and I hope [present tense] that she has read [present perfect tense] it by now.
PAST PERFECT TENSE
Conveys action that took place before another action in the past.
Formation: had + the past participle of the verb
I had intended [past perfect tense] to eat [infinitive] dinner at home until I decided [past tense] to go [infinitive] out instead.
I suppose [present tense] they had notified [past perfect tense] me earlier, but I neglected [past tense] to mark [infinitive] the date on my calendar.
FUTURE PERFECT TENSE
Conveys future action that will occur before another future action.
Formation: will have + the past participle of the verb
I will have finished [future perfect tense] all of my work when I end [present tense indicating a future event] my day with my favorite TV show.
I assume [present tense] that the teacher will have corrected [future perfect tense] our essays by the time class begins [present tense indicating a future event].