英語句子中，主語的“人稱”和“數”要限制，決定謂語動詞的形式變化，這就叫“主謂一致”關係。
它通常依據三項原則：
1）語法一致； 2）意義一致； 3）就近一致。
【語法一致原則】
a）“many a + 單名”接單數謂語：“a good (great ) many + 復名”接複數謂語。 e.g.
①Many a fine man has died for it . 許多優秀戰士為此獻出了生命。
②A great many parents were present at the meeting . 許多家長出席了會議。
b）"a / an + 單名+ or two " 大多接單數謂語： "one or two + 復名"接複數謂語。 e.g.
①Only a word or two is (are )needed. 只需說一兩句。
②One or two reasoms were suggested . 提出一兩條理由。
c）"a / an + 單名+ and a half"常接單數謂語；“one and a half +復名”多接複數謂語。 e.g.
①A year and a half has passed . 一年半已過去了。
②One and a half tons of rice are sold . 已賣了一噸半大米。
d） "more than one + 單名"大多接單數謂語。 e.g.
①More than one person was (were )absent . 不止一個人缺席。
"more + 復名+ than one "接複數謂語。 e.g.
②More students than one have been there . 不止一個學生去過那兒。
"more than two (three,…)+復名" 接複數謂語。 e.g.
③More than one hundred students have attended the concert . 不止一百名學生聽了這場音樂會。
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Many a man ( )come to help us.
A.have B.has C.is D.are