0
votes
0answers
32 views

Before it had dissolved vs Before it dissolved [duplicate]

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 ...
1
vote
3answers
1k views

Has been run vs has been running

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? ...
1
vote
2answers
336 views

“It took a year until she got/had got/had gotten over it”

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 ...
-1
votes
2answers
347 views

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 ...
0
votes
1answer
1k views

Using had twice [duplicate]

Possible Duplicate: What does “had had” mean? How does this differ from “had”? Is this correct usage? I had had enough food?
10
votes
7answers
20k views

What does “had had” mean? How does this differ from “had”?

For example, what is the difference between the following two sentences: I had a bad day I had had a bad day