Dear Hasan, grammatically, it's correct. It's a passive past tense of the verb, washing. Not only that, as a carry over from it's German roots, the nouns often have a "the" definite article in front of them. I think some people have problems when they learn English with the definite articles. Having written that, to a North American, it sounds a bit stilted and formal. Most North Americans would probably say, "She washed dishes all morning" or "She washed all the dishes in the morning." Like so many languages, there may be some variation from region to region. Brits may say it differently than in New York or Australia. I hope it helps. Best wishes as you learn English.

Hi Hasan, Try this :)