求英语高手解析句子:two plus two equalS four.比如equals为什么用第三人称单数?

求英语高手解析句子:two plus two equalS four.比如equals为什么用第三人称单数? Two plus two equals four.为什么是equals. One plus one equals two. Six minus two equals four. Five and two is/equals seven. 为什么是equals? Two plus five equals seven 同义句转换 two,eight,plus,equals,ten连词成句 急需英文演讲稿 “one plus one equals two?” 谁有one plus one equals two?演讲稿 急需英文演讲稿 one plus one equals two? Three plus four equals seven 句子成分 one and one equals two