1．语法一致原则
主语的单复数决定了谓语动词的单复数。
(1)动名词短语、动词不定式短语、单个从句或不定代词作主语时，谓语动词常用单数。
Listening to music makes me relaxed after a busy day.
听音乐使我在一天的忙碌之后得到了放松。
Everything is in a complete mess, which drives people crazy.
所有的事情都毫无头绪，让人发疯。
[名师指津] what引导的从句作主语时，谓语动词一般用单数形式，但如果从句表示复数意义，则谓语动词用复数形式。
What he said is far from the truth.
他的话与事实相差太远了。
What the school needs are qualified teachers.
这个学校需要的是合格的老师。
