การใช้ A number of และ the number of
A number of ตามด้วยกริยา พหูพจน์
e.g. A number of people have gone to Siam Parago.
A number of people are waiting for the bus
The number of ตามด้วยกริยา เอกพจน์
e.g. The number of people here has increased since this morning.
The number of people living with HIV has risen from around 8 million in 1990 to 33 million today, and is still growing.
Credit:https://eazyclass.com/2010/09/25/a-number-of-or-the-number-of/
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