A good knowledge

[Rachel Adams]

Isn't it wrong to omit "a" before "knowledge" in my sentence? Should it be used because I am talking about a particular knowledge?

A good knowledge (of English) can help us to get a great job.

Context: I am sharing my opinion about the importance of the English language.

 

[teechar]

I am talking about a particular knowledge?

Which particular knowledge? To me, it seems general.

A good knowledge (of English) can help us to get a great job.

1- Drop the "a".
2- Drop the parenthesis.
3- Say "... in getting a good job". "great job" probably isn't the best choice here, because "help" is weak, whereas "great job" is very strong.
4- To avoid repeating "good", consider an alternative, for example "a solid/reasonable knowledge".

 

[Rachel Adams]

Which particular knowledge? To me, it seems general.

1- Drop the "a".
2- Drop the parenthesis.
3- Say "... in getting a good job". "great job" probably isn't the best choice here, because "help" is weak, whereas "great job" is very strong.
4- To avoid repeating "good", consider an alternative, for example "a solid/reasonable knowledge".

Is "a good knowledge of English" wrong? Would "a good knowledge of history" work? Or of medicine, science, etc? I mean you used "a solid/reasonable knowledge" with the indefinite article. Does "a solid/reasonable knowledge of English" work?

 

[teechar]

Is "a good knowledge of English" wrong?

No, it's not wrong. But "A good knowledge of English helps in getting a good job" repeats "good".

Would "a good knowledge of history" work? Or of medicine, science, etc?

Yes.

I mean you used "a solid/reasonable knowledge" with the indefinite article.

Yes.

Does "a solid/reasonable knowledge of English" work?

Yes, but "solid" is stronger than "reasonable".