Breakdown of ای کاش پیشنهاد او را رد نکرده بودی.
او
he/she
راrâ
definite direct object marker
پیشنهادpishnahâd
offer / suggestion
ای کاشey kâsh
I wish
Questions & Answers about ای کاش پیشنهاد او را رد نکرده بودی.
Why do we use the Past Perfect tense رد نکرده بودی here instead of the simple past?
We use the Past Perfect tense after ای کاش (I wish) to express regret about something that already happened and cannot be changed. This is similar to English, where we say I wish you 'had not rejected' rather than 'did not reject'.
Does adding ای to کاش change the meaning of the wish?
No, کاش and ای کاش mean the exact same thing (I wish / if only). Adding ای just makes the expression a little more emphatic or emotional, but they are completely interchangeable here.
Why is the word را used after پیشنهاد او?
را marks the specific direct object of a sentence. Since the suggestion isn't just any suggestion, but specifically his suggestion (پیشنهاد او), it is definite. Therefore, it needs را before the verb.
How do the pieces of the compound verb fit together to make رد نکرده بودی?
The infinitive is رد کردن (to reject). To form the negative Past Perfect for 'you' (singular), we keep the noun part رد, make the past participle of the main verb negative (نکرده), and add the helping verb for you (بودی).