"Did you contacted them" or "did you contact them"
26184
Why do we use the base form of verbs instead of the past form in past tense questions?
18328
Is using "someone" in a question correct?
95609
Unsure whether to use "enquire" or "inquire"
157446
"Can" vs. "could" in asking a question
89817
Which is more polite, "Would you" or "Could you"?
28837
What is the difference between "Have you seen this?" and "Did you see this?"
24661
"had they known" or "if they had known"
54904
"Help you" vs "help you out"
12874
"Are you the one who called?" or "Are you the one that called?"
153916
Could you vs would you
157454
Questionee? Inquiree? Interrogatee?
63448
did call vs called
42086
Do you really answer "How do you do?" with "How do you do?"
151953
"No, I didn't see him" vs "Yes, I didn't see him"
27551
"One of them was/were you"
94590
Difference between "asked" and "were to ask" in conditional sentences?
2182
vs. . Which to use?