語法就是這么規(guī)定的：
由more than one (或more than one + 單數(shù)名詞),many a + 單數(shù)名詞作主語,謂語動詞要用單數(shù)形式.例如：
1）More than one student has passed the examination.
2）Many a boy learns to swim before he can read.
注：如果more than后面是復數(shù)名詞,則謂語動詞要用復數(shù).
more + 復名+ than one 接復數(shù)謂語.e.g.
②More students than one have been there .不止一個學生去過那兒.