主謂一致中的靠近原則:

1. 當there be 句型的主語是一系列事物時,謂語應與最鄰近的主語保持一致。
 例:There is a pen, a knife and several books on the desk..
  There are twenty boy-students and twenty-three girl-students in the class.

2. 當either… or… 與neither… nor, 連接兩個主語時,謂語動詞與最鄰近的主語保持一致。 如果句子是由here, there引導,而主語又不止一個時,謂語通常也和最鄰近的主語一致。
 例:Either you or she is to go.
  Here is a pen, a few envelops and some paper for you.