Past time and hypothesis 09:08 May 31, 2011
"Might" is the past tense of "may" but the verb is modal, not lexical, and in the phrase "may/might as well (do)", the past form refers not to time but - theoretically, at least - to a more remote degree of probability.
The past form of the phrase is "may/might as well have (done)", which of course refers to an action that did not actually happen. This means that when the equivalent Italian phrase (tanto vale) is used as a historic present, and you want to use the past tense in English, you really need to rephrase.
In this case, Dante actually did go on a bender. The hypothetical "might as well have" is therefore wrong, as is "might as well", unless you maintain the rather unidiomatic historic present in English.
If you want to use the past tense in English (I would), you'll have to find some other way of expressing the notion in "tanto vale".
You could try something like: "Dante let himself slide, spending his evenings drinking heavily and picking fights with random strangers". |