與后接名詞或代詞保持一致

1）用half of, part of, most of, a portion of 等詞引起主語時，動詞通常與of后面的名詞，代詞保持一致。 Most of his money is spent on books. Most of the students are taking an active part in sports.

2）在一些短語，如 many a 或 more than one 所修飾的詞作主語時，謂語動詞多用單數(shù)形式。但由more than… of 作主語時，動詞應與其后的名詞或代詞保持一致。 Many a person has read the novel.　許多人都讀過這本書。 More than 60 percent of the students are from the city.百分之六十多的學生都來自這個城市。