Many a writer of newspaper articles (has?have?) turned to writing novels.

问题描述:

Many a writer of newspaper articles (has?have?) turned to writing novels.
既然用Many许多 writer,那就应该选have对吗?如果错了为什么?

many a+单数可数名词”形式上为单数,但意义上为复数(意为“许多”).
若用作主语,其谓语用单数
如:
Many a student has paid rent .
许多学生都付了房租.