Should I use is or are in this sentence

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My knowledge of grammar and usage of both written and verbal communication skills are exceptional.

asked Mar 10 at 01:10 Marcene New member

1 answer


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'Knowledge' and 'usage' are the components of a compound subject, so the verb would be the plural 'are'.

 

My knowledge of grammar and usage of both written and verbal communication skills are exceptional.

 

However, if you mean your knowledge of grammar and knowledge of usage (compound object of 'of'), 'knowledge' could be the sole subject, and you would use 'is'.

 

My (knowledge (of grammar)) and (usage (of both written and verbal communication skills)) are exceptional.

My (knowledge (of grammar and usage of both written and verbal communication skills)) is exceptional.

link comment edited Mar 10 at 01:23 Lewis Neidhardt Grammarly Fellow

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