Yes, it is correct to say "could have left."
(eg.)
He could have left at 5:30 instead of at 6:00.
or
She could have left me a note.
It is correct, but you could also say:These daysNowadaysIn this day and age
The correct form for this question is, "Did you leave your phone here?" If you are making a statement rather than asking a question, it is correct to say, "You left your phone here."
Wednesday morning, it is correct to say I have not seen him for one day. Wednesday afternoon, or by working day end, it is correct to say I have not seen him for two days
It depends on the rest of the sentence. For example, it is correct to say Come see me at home, or You will find my sister and me at home. You could say "I'm at home" just "Me at home" is incomplete.
You probably want to say: "Have you had a chance?" In the past, were you given an opportunity to do or try that? You could also say "Did you try it?"
No but you could say are you up to dance.
Have gone is correct
It is correct to say could you give me. This can be explained as follows: could is the past form of can but some time it is also used in the present form whenever we want to say to anyone with humble respect then we use could instead of can. For example when we talk to our sir aur teacher ,then we say that could you explain again sir ? here, could is used for humble respect and another example of this ,when we talk to our friend .then ,we just said to her that could you give me water? here could shows that it is a fast form of can.
That is correct. You could also say: Tom has been unemployed for a month.
It is correct, but you could also say:These daysNowadaysIn this day and age
No, Instead you could say 'the volunteering spirit'
No. But it could be "From New Jersey, I use a cab to go to John's home."
Both are correct and say the same thing. Couldn't is the contracted form of could not.
Right as in right or left: raastRight as in correct: dorost
The correct form for this question is, "Did you leave your phone here?" If you are making a statement rather than asking a question, it is correct to say, "You left your phone here."
The latter form is grammatically correct but the former is in popular usage.
Yes it is, or you could say "it is expected of you" either way is fine.