If + past perfect + would + have + past participle
15
Instead of if + past perfect, two of the conditional sentences (in paragraph 4 and 9) use alternative forms. What form are they?
But for his advice, I would have... (paragraph 4); Had I done this, I would have... (paragraph 9)
15
Look at the conditional sentence in paragraph 6. Do both clauses refer to the past? What forms are used? Why do you think this is sometimes called a "mixed conditional"?
No, they don't. The first is past (If I had known...), but the second is present (I'd be selling...). Because it mixes time periods.
15
Two phrases to describe regrets use the same verb tense. What tense is this?