- Check my video for more details! -
https://www.youtube.com/watch?v=hchBC1pvy4w&t=231s
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【て+しまいます】
(1) It expresses completion of an action, emphasizing that the action in continuation has completed.
(2) It expresses feeling of regret, or the feeling that "I am in trouble/regretting".
This is the more casual version, which instead uses a verb’s stem form:
ちゃう／ちゃいます = to do by accident / to finish (casual)
ちゃった／ちゃいました = did by accident / finished (casual)
If the verb’s dictionary form ends with ぶ (bu) , む (mu) , ぬ (nu) or ぐ (gu), it becomes じゃう (jau) or じゃった (jatta).
じゃう・じゃいます = to do by accident / to finish (casual)
じゃった ・じゃいました= did by accident / finished (casual)
パスポートをなくしちゃった。
I lost my passport.
時計（とけい）が壊（こわ）れちゃった。
The clock has been broken.
兄（あに）はケーキを食（た）べちゃった。
My brother ate the cake.
急（いそ）いで来（き）たから財布（さいふ）を忘（わす）れちゃった。
I left in a hurry so I forgot my wallet.
ごめん！ジュースを全部（ぜんぶ）飲（の）んじゃった！
Sorry, I drank all the juice!
昨日（きのう）うちの猫（ねこ）が死（し）んじゃった。
Yesterday, my cat died.
明日（あした）までに宿題（しゅくだい）をしちゃう。
I will finish my homework by tomorrow.
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