student

[Unregistered]

1)dave,a student in ....., is.....
2)dave,students in.....,is....
3)dave,student in...,is

Which one is correct?
I think the first one is correct because since "student" is a countable noun, an indefinite or definite noun must be placed before it. However, from my practice exercise, the model answers are both 1 and 3. Could anyone help me with this?

Thanks a lot!

[Mister Micawber]

'Dave' is singular, 'is' is singular, and the appositive 'a student' is singular. Only #1 is possible, from what you have given us. Never trust an exercise book 100%-- they are too hastily written.

[Casiopea]

1)dave,a student in ....., is.....
2)dave,students in.....,is....
3)dave,student in...,is

Which one is correct?
I think the first one is correct because since "student" is a countable noun, an indefinite or definite noun must be placed before it. However, from my practice exercise, the model answers are both 1 and 3. Could anyone help me with this?

Thanks a lot!

To me, only 2) is ungrammatical. The phrases "a student in. . ." and "student in. . ." are possible. Both function as appositives.