Mixed conditional clause type 1-3?

Question

I came across the following conditional clause while studying a grammar book published by Oxford: "If you know London so well, you shouldn't have got so hopelessly lost." The writer of the book has only briefly mentioned that this is a mixed conditional clause (type 1-3) without giving any further explanation in what situation it can be used. I'm already familiar with two other types of mixed conditional clauses (type 2-3 and type 3-2) and have no problem understanding them but this one is causing me some trouble. I need your help. Thanks.

Answer 1

Okay, so, "if you know London so well, you shouldn't have got so hopelessly lost."

Short answer: It can be used, but maybe you shouldn't.

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The trouble with the sentence is that it is awkward. I feel like I am reading Madame Bovary. My assumption is that is why the author minimized its situational use. Besides, I am not sure if this is a completed action i.e. we are lost, yet the sentence uses 'have got so hopelessly lost." Why? I am unsure. Seems like the past participle 'gotten' should be used as in 'have gotten so hopelessly lost'.

If you knew London so well, you shouldn't have gotten so hopelessly lost.

Furthermore, hopelessly? Is that even necessary? Seems dramatic. Avoid drama.

Hope this helps. ~W