主謂一致的三個原則
1. 語法一致原則
該原則要求謂語動詞必須與主語在語法形式上保持一致，即主語是單數(shù)形式，動詞用單數(shù)形式，主語是復數(shù)形式，動詞用復數(shù)形式：
Both my parents are doctors. 我的父母都是醫(yī)生。
The living-room walls are a light yellow. 客廳的墻是淡黃色。
The two factories are in the same locality. 兩家工廠都在同一個地區(qū)。
Her job is teaching French. 她的工作是教法語。
The location of the house is near the highway. 房子的地點靠近公路。
A large amount of damage was done in a short time. 短期內造成大量損害。
2. 意義一致原則
有時候謂語動詞的數(shù)取決于主語所表示的概念，而不是其語法形式：
This news is important for us. 這條消息對我們很重要。
Paris is among the largest cities in the would. 巴黎是世界上最大的城市之一。
The thesis was about a hundred and fifty pages long. 論文有一百五十頁長。
Watch out! The police are coming. 當心，警察來了。
Less people are going to university than usual. 現(xiàn)在上大學的人比平時少。
3. 就近原則
有時，謂語動詞的數(shù)決定于主語中最靠近它的詞語：
Either you or I am wrong. 不是你錯了就是我錯了。
Neither the students nor the teacher is interested in it. 老師和學生對此都不感興趣。