- If I found out the truth, I would definitely tell you.
- If I did find out the truth, I would definitely tell you.
What is the difference between these two conditional phrases?
- If I found out the truth, I would definitely tell you.
- If I did find out the truth, I would definitely tell you.
What is the difference between these two conditional phrases?
(1) and (2) are conditional sentences, not conditional phrases. Conditional sentences are formed by a conditional clause (in this case, "If I found out the truth / If I did find out the truth") and a main clause (in this case, "I would definitely tell you").
Both sentences are slightly different in that the verb in conditional clause (2) is emphatic, so we can imagine some preceding context in which the possibility of "I" discovering the truth is considered to be remote, for example: