一、 (不定詞、動名詞與名詞子句視為一件事) + 單數動詞
1. To study hard is difficult for Judy. 努力讀書對Judy來說很困難。
2. Playing baseball is fun for Tony.對Tony來說打棒球是有趣的。
3. How to play the guitar well is a big question to someone.
對某些人來說如何把吉他彈好是一件大問題。
二、時/距離/重量/價值 + 單數動詞
1.Twenty years is a long time. 二十年是一段很長的時間。
2.Ninety thousand dollars is a large sum of money. 9萬元是一大筆錢。
文章未完,全詳文請至:主詞單複數怎麼判斷