Help students figure out the correct subject-verb agreement for these confusing expressions!

A few weeks ago, someone emailed us at ESL-Library.com khổng lồ ask if the grammar on our trang chính page was correct. In the featured lesson about protests in the Middle East, this sentence caused some confusion: “Over the past few years, there have been a growing number of both peaceful và violent protests.” The person wanted to know if “…there have been a growing number of…” was correct. Shouldn’t it be “…there has been a growing number of…”?

This is a question that commonly confuses our students! The problem is that the subject-verb agreement is different for the expressions “a number of” & “the number of.” Here’s how I usually explain it khổng lồ my students:

1) “A number of” takes a plural verb.

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Tell your students to think of it this way: a number of means many. Because “many + plural noun” takes a plural verb, you would say “Many cars are on the freeway during rush hour.” Likewise, you would say “A number of cars are on the freeway during rush hour.”

The important thing lớn remember is that this expressions is acting like a quantifier. So even though it involves a singular noun “number,” it is serving the same role in the sentence as a quantifier such as “many,” “a lot of,” “lots of,” “hundreds of,” etc. You would say “A number of people have sầu started the test” just lượt thích you would say “A lot of people have started the chạy thử.”

2) “The number of” takes a singular verb.

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Here’s where it gets even more confusing. In English, “the number of” doesn’t mean “many.” Tell your students to lớn think of it as one number. So even though that number might be large, the purpose of this expression is to lớn compare this one number/amount with another number/amount. For example, we would say “The number of crimes in Thủ đô New York has increased this year.” There might be 56 more crimes committed this year compared khổng lồ last year. Another example is “The number of people who are writing the thử nghiệm today is larger than yesterday.” There might be trăng tròn more people writing the chạy thử today.

For more practice, see if your students can piông chồng out these expressions on the Internet, in newspapers, or in magazines. Also, this is a very common grammar question in Part 5 of the TOEIC thử nghiệm, so make sure that any students you have sầu who are preparing lớn write this demo memorize the correct subject-verb agreement for these expressions.

I hope that clears things up for you và your students! I hope that the number of questions they have sầu about these expressions is now zero. :)



“The number of x” takes a singular verb; “a number of x,” a plural verb.” (Einsohn, A., The Copyeditor’s Handbook, p. 344)

Examples in use:

“Even in regular prose, a number of expressions are almost always abbreviated & may be used without first spelling them out.” (The Chicago Manual of Style, 16th ed., p. 488)“The article that precedes the mass noun signals whether the mass noun or the number of the noun in the prepositional phrase controls the number of the verb.” (The Chicago Manual of Style, 16th ed., p. 205)