و این که از قرار معلوم future time clause بعد از conjunction های زمانی باید present باشن. حالا یا simple present یا present perfect. این درسته استاد؟ 

فرق معنایی بین

After you have grated the cheese, add it to the mixture.

و

After you grated the cheese, add it to the mixture.

چی هست؟

bale doroste

tafavoteshoon ine ke too jomleye dovomi yani in etefagh haa bayad poshte sare ham biyoftan( vaghty simple present miyad bad az after)

vali to jomle avali mitoone faseleye zamani bashe( vaght present perfect miyad bad az after