yes
"Have experienced" puts the experiencing in the past. "Had experienced" suggests that the experiencing was the earlier of two past actions.
I do not think that the sentence is grammatically correct. The sentence seems ambiguous to me. Is the statement suggesting that "she has good command" of a group of people or animals? Or, is the statement suppose to imply that "she has command" of the English language?
You should say for your convenience it is *gramatically correct-*just means correct
be rest assured
No there shouldn't be an apostrophe in this case. It should be: The 1400s.
I believe my offices and I are well known.
The sentence is gramatically correct.
yes.
Everybody has is correct.
It is, but it is not very descriptive. How about"Nuclear weapons are devices created to kill many with extreme heat and explosive power."
No, the statement "the neck a tad bit queer" is not grammatically correct. A possible correct version would be "the neck is a tad bit queer."
Yes it is.
No 'It's for you' would be though
It's a weird sentence, but it is grammatically correct.
Yes it is correct to say "Have a wonderful Holiday."
No because and is a fanboy and it would not be gramatically correct
i welcome you TO Delhi.
I do not think that the sentence is grammatically correct. The sentence seems ambiguous to me. Is the statement suggesting that "she has good command" of a group of people or animals? Or, is the statement suppose to imply that "she has command" of the English language?