1074
I am searching for a way to ask a question like "When did you last see her?"
or "When did you last do the laundry?, or also "When did we last meet?"
Basically, how do you construct a question with this content:

> "When was the most recent time when X happened?"

And even less specific: How to talk about the most recent point in time in
general.

> "Last time you ate lunch, did you eat a salad?"  
>  "When was your last holiday?"  
>  "Who was your last boyfriend?"
CC BY-SA 3.0
2011-06-13T14:35:15.003
1060
2015-09-06T03:20:27.067
2011-06-14T08:23:15.027
84
84
question
grammar translation time
When did you last...?
"When did you last see her?"  
最後に彼女を見たのはいつ(ですか)?

"When did you last do the laundry?"  
最後に洗濯をしたのはいつ(ですか)?

"When did we last meet?"  
最後に会ったのはいつ(ですか)?

I think you can easily use 最後に to say "last" in this context.
CC BY-SA 3.0
2011-06-13T14:46:09.357
1061
2011-06-13T23:48:43.363
2011-06-13T23:48:43.363
88
296
1060
answer
This depends on the semantics that are unfortunately not given by the English
language.

If by "last", you mean "the final time" ("When did you see her for the final
time?"), then 最後に is used as @Rolf said.

But if "last" means "the most recent", I think 最近 is a better choice to use.
Actually, they may both work, but I'm confident that 最近 works, but I have no
confidence as to whether or not 最後に fits this context.

>   * 最近いつメアリーに会いましたか? → When did you last see Mary?
>
CC BY-SA 3.0
2011-06-13T19:39:29.467
1070
2013-11-03T19:46:39.453
2013-11-03T19:46:39.453
78
78
1060
answer
I don't think _"last"_ can be translated literally in most situations, or at
least shouldn't. _"Last"_ will be very much understood from context in most
cases. I'd come up with:

"When did we last meet?"

> この前会ったのはいつ？ _Kono mae atta no wa itsu?_

"When did you last see her?"

> 彼女を見たのはいつだった？ _Kanojo o mita no wa itsu datta?_

"When did you last do the laundry?"

> 洗濯したのはいつだった？ _Sentakushita no wa itsu datta?_  
>  いつ洗濯したんですか？ _Itsu sentakushitan desu ka?_

この前 is a common way to say _"last time"_ , but it's usually only used if you
find yourself in exactly the same situation as before and want to refer to the
_last time this happened_. You can't usually apply it if you're asking another
person when he last did something if you had no part in that "last time".

Usually the best way is to simply phrase the question in past tense, which
very much implies that you're asking for the _last time_ something happened.
If you want to very explicitly say _"most recently"_ , 一番最近 _ichiban saikin_
should do.
CC BY-SA 3.0
2011-06-14T01:33:53.017
1074
2011-06-14T09:13:58.463
2011-06-14T09:13:58.463
88
88
1060
answer
possibly... 最後の 何々 を するの は いつ？ When is the last time you played tennis?
最後のテニスをするのはいつ？ Who was your last boyfriend? 最後の彼氏は誰？ When was your last
holiday? 最後の休暇をとるのはいつ？ Not sure of this...I'm looking for the answer myself
and thought of this before I started searching. Hope it helps :)
CC BY-SA 3.0
2015-09-06T03:20:27.067
27844
2015-09-06T03:20:27.067
11106
1060
answer