Would you say "not of been" or "not have been"
109836
Is "of" instead of "have" correct?
123228
"one of ..." singular or plural?
47279
How to choose a proper contraction "it's not" versus "it isn't"?
95245
When should I use "didn't" instead of "haven't"?
120497
"Would have been" or "Would be"
55834
"is being" vs "has been"
91771
"Being" or "to be"?
128241
"some " vs. "some of "
34504
"could have" vs "could"
98035
When do I use "was" and when do I use "were"
129924
has been, have been , had been
103953
"I didn't know" or "I haven't known"?
65074
difference between not to verb , to not + verb
58714
Simple Past vs. Present Perfect: "was" vs. "has been"
128030
Past Simple or Present Perfect with "Never"?
72276
Have gone or Have been
77010
'was' versus 'had been'