Is this correct plase? You should have done it before the substance had dissolved. Meaning that he should have done something before the process of dissolving finished. And if it was: You ...
If I want to question someone about for how many hours a computer is turned on and running - and by the time of the question it is still running - which of the constructions below is more appropriate? ...
I am trying to figure out the correct use of perfect (past perfect) tenses: It took a year until she got over it. It took a year until she had got/gotten over it. Are both correct? If ...
Present Perfect Vs Present Perfect Continuous and Simple Past/ Past Perfect Vs Past Perfect Continuous [closed]
What is the difference in meanings of the following pairs of sentences? It's very confusing to me. a. I have lived in Paris for 4 years. b. I have been living in Paris for 4 years. a. I ...
Possible Duplicate: What does “had had” mean? How does this differ from “had”? Is this correct usage? I had had enough food?
For example, what is the difference between the following two sentences: I had a bad day I had had a bad day