What's the difference between "I..." and "I have..."?
47451
Present Perfect or simple past?
114229
What is the difference between "were" and "have been"?
144014
either + singular + 'have' or 'has'?
121795
What is the difference between 'past' and 'present perfect;?
32288
'Country have' vs 'country has'
24269
Difference between using a "-" and a "," in a sentence
76912
Is there any difference between "has gone" and "went" in this context?
99083
"Have had" versus "had"
132687
"I have no ..." vs. "I don't have ..."
154084
Having done something,... vs Doing something,
121488
Why do we use "have" with does and not "has"?
62469
Is it better to say "How do I..." or "How can I..."?
33549
"Which" vs. "what" — what's the difference and when should you use one or the other?
118270
Difference between "has + verbed" and "had + verbed"
23936
Is it appropriate to use short form of "have" ('ve) when it means possession?
8379
Can you contract the main verb '[I] have' in a sentence?
109854
“have despatched...yesterday” vs. “despatched … yesterday”