Japanese verb phrase: “verb + tyatta/ちゃった”

Japanese verb phrase: “verb + tyatta/ちゃった”

What is the tyatta/ちゃった in Japanese tyatta/ちゃった is a past form of tyau/ちゃう and tyau/ちゃう is a slang for te-shimau/てしまう. The past form of te-shimau/てしまう is te-shimatta/てしまった. So, tyatta/ちゃった is a past form of te-shimatta/てしまった. te-shimau/てしまう consists of the particle...