has or have altered?

English grammar questions, answered by Alan

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tamguatlay
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has or have altered?

Post by tamguatlay »

When contacted by TODAY on Friday, Dr Oon, who last practised at Mount Elizabeth Medical Centre, confirmed that the content of the message was from him.

In the message, he wrote that mutations in the spike protein of the coronavirus causing Covid-19 has altered its antigenicity — or its ability to bind to cell walls.

Should it be "have altered", since the subject is "mutations"?

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Alan
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Re: has or have altered?

Post by Alan »

Yes!
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