"I _________ with you, but I had to study"
- would go
- might go
- would have gone
- could go
I thought 1 is correct but the book says it is not correct.
"I _________ with you, but I had to study"
I thought 1 is correct but the book says it is not correct.
The correct phrasing is:
I would have gone with you, but I had to study. (in the past)
or
I would go with you, but I have to study. (in the present)
The phrase "I have to study," is a present-tense phrase that means, "I am required to study." You use the phrase "I had to study," which is a past-tense form (so, "I was required to study").
I have to study today.
I had to study yesterday.
So, we know that you had to study in the past. Therefore, you also turned down the chance to go in the past. You must use the past form of "would go", which is "would have gone".
We know the conditional statement is about the past, because of the way had is used. So we look for the past participle: gone, in this case, and see that it is coupled with would have (and not something else, like will have). So we know we have the correct answer.
The other three options refer to present and future tenses, which are not correct in conjunction with had.
might havegone". by that i don't mean the same as the future tense "I might go with you" or "I may go with you" which would be an indication of my reluctance to commit. Instead, I am usually making apologies at all because something unexpected came up (e.g. the studying; perhaps the test got moved forward) and saying "might have" or "may have" just indicates my cynical 'Murphy's Law'-type view of the world: assuming that well, since that went wrong, it would have been easy enough for something else to go wrong too! xD – shelleybutterfly Dec 12 '14 at 18:56to have=>had} as well as {the past-tense modalmust=>had to}. So, maybe try it withneed: 'I might have gone but I needed to study.' and 'I might have gone but I had needed to study.' To me it seems a subtle difference; the only thing that occurs to me is that I think I'd probably use the first conversationally, but the second I'd probably only ever use in a storytelling situation; or much farther in the future. – shelleybutterfly Dec 12 '14 at 19:10