Comma or not?

[Medeya2012]

Hi all,

I have some difficulties on using commas in adjective clauses.I know the rule that I must use comma if the adjective clause is unnecessary.I have some sentences with adjective clause, and I don’t know exactly if I should use comma or not :shock: PLEASE HELP ME

Here are some of them:Cheating makes grades of diligent and lazy students equal? (I guess I must use comma,unnecessary) which is not benefical for diligent students.

Some of diligent students loose their enthusiasm in learning because of cheaters ? (comma) who cheat and have the same grade as they do.

Some cheaters after graduation get good jobs instead of (can I use article THE?) THE diligent students ??(comma) who really deserve them.

Afterwards, I was not interesting in such subjects?( comma) which I used to cheat(comma?) and I know a little about math, cemistry ?(comma) which lessons I did not love.

[Yankee]

@medeya2012

Here are some of them:Cheating makes grades of diligent and lazy students equal? (I guess I must use comma,unnecessary) which is not benefical for diligent students. [color=green]comma = yes
[color=blue]Cheating results in the grades of lazy students being equal to those of diligent students, which is not benefical for the hard-working students.

Some of diligent students loose their enthusiasm in learning because of cheaters ? (comma) who cheat and have the same grade as they do. [color=green]comma = yes
[color=blue]Some diligent students loose their enthusiasm for learning because of cheaters, who end up receiving the same grade with little or no effort.

Some cheaters after graduation get good jobs instead of (can I use article THE?) THE diligent students ??(comma) who really deserve them. [color=green]comma = yes, but the sentence needs drastic rewording.
[color=blue]After graduation, good jobs sometimes go to cheaters rather than to diligent students, who are the ones who actually deserve them.

Afterwards, I was not interesting in such subjects?( comma) which I used to cheat(comma?) and I know a little about math, cemistry ?(comma) which lessons I did not love. [color=green] comma = yes + no – I had trouble understanding this sentence
[color=blue]Afterwards, I was not interested in subjects in which I used to cheat, and I knew (?) only a little about math and chemistry, which were lessons I did not like.

I’ve tried to improve and correct all of your sentences (and I included the commas ;)).

Amy

[Medeya2012]

HI Amy THANKS A LOT Also, thanks for corrections, now my sentences are better. thanks for a quick reply.