Can someone help me to revise てしまいました?

[watermen]

Can someone help me to revise てしまいました? I realize that I know the meaning but I don't know the grammar logic behind it, hope someone kindly explain the grammar to me, or tell me which lesson talk about this grammar?

[maxiewawa]

Watermen, the term is actually ~てしまいました, maybe you'll have more luck finding some resources with the correct spelling.

I'd like to help you out, but I've just had a mental block! Does 〜てしまった = 〜てしまいました?

[Javizy]

しまう literally means 'to finish, to do something completely', and when used as an auxiliary it adds the nuance that the action is completed to its fullest extent. More often, however, it's used to express regret or disappointment on the speakers part, especially with intransitive verbs.

〃ビールを全部飲んでしまった〃 could mean 'he drank all the beer', emphasising that he has finished drinking and the beer is all gone, but a sentence like this would more commonly mean 'he drank all the beer (when I wanted some)', indicating a negative emotional reaction from the speaker. Also look out for the spoken contraction ちゃう/じゃう and the macho-style ちまう/じまう, which replace てしまう/でしまう, e.g. 食べちゃう, 飲んじゃう

Keep in mind that しまう can only be used in this way when the speaker is simply upset by the action of the verb, if the speaker suffers in some way as a result of the verb, be it emotionally, physically, financially, or whatever, then you would use the 'suffering/adverse passive'. An example might help to illustrate the difference.

雨が降ってきちゃった! It started raining (just my @*#$ luck)!
雨に降られた! I got wet in the rain (oh the agony)!

In the first example, the guy is just annoyed at the fact it started raining, whereas in the second one it adversely affected him since he got wet. The second one takes the particle に since the rain is the agent (takes some getting used to). Finally, if it was a really bad day and you got caught in the rain, you might even put them both together for some extra sympathy.

雨に降られちゃった! It like totally rained on me, God hates me!

If I remember rightly, the lessons that cover this are the security guard ones and the one where the son moans at his parents because they used his computer. They are right near the end of the beginner S1.

[Psy]

Don't forget that while oftentimes the outcome is undesired or unexpected, there are times where this just means something "ended up" a particular way. Like maybe 家に帰ってしまった "I eneded up going home" or 準備をしてしまいました "I finished all of the preparations."

*added*
I feel dumb. How did I miss your first paragraph, Javizy?

[Javizy]

It was a long post (longer than I thought it would be when I made the decision to give it a shot ), so it's understandable. Can't hurt to have another couple of examples either

前の書き込みは長くなっちゃったなぁ~。

[maxiewawa]

Don't worry Psy, I corrected a spelling mistake that wasn't there, so I think we both need to put our glasses on today!

Machiga-chatta!

[watermen]

Thanks everyone. I am confuse now.

How does しまう becomes しまいました?

[Jason]

しまう is the dictionary form. It's a regular class 1 verb, so to get the polite non-past form, you change the final う to い and add ます -> しまいます. Then you just make that past tense.