三、并列结构作主语1.“and和both ...and连接的并列主语”通常作复数。Plastics and rubber never rot.塑料和橡胶从不腐烂。Walking ... [查看全文]

二、“确定数量”的单词或短语作主语1.“分数，百分数+of+名词”作主语时，谓语动词由后面的名词或代词决定。Two thirds of water in ... [查看全文]

一、“不确定数量”的单词或短语作主语1.“all of，some of，half of，most of+名词或代词”作主语时，谓语动词由后面的名词或代词决定... [查看全文]

三、就近一致原则“就近一致”是指，谓语动词的形式取决于最靠近它的主语的单复数形式。1.or，either ...or，neither ...nor，not only... [查看全文]

二、意义一致原则“意义一致”是指，侧重于依据实质意义使主谓保持一致。1.形式虽为单数但意义为复数的名词，谓语动词用复数。Cattle eat... [查看全文]

一、语法一致原则“语法一致”是指，句子的主语和谓语在语法形式上一致。He goes to school early every morning.他每天早晨很早去上... [查看全文]

二、主语的“数”决定谓语动词的形式1.复数（1）“复数名词”作主语时，谓语动词用复数。The children are taken good care of.孩子... [查看全文]

一、主语的“人称”决定谓语动词的形式1.复数（1）第一人称：谓语动词用复数形式。I enjoy collecting new idioms.我喜爱收集新的习语... [查看全文]

二、what从句1.表语是单数名词或不可数名词，谓语动词用单数形式。What the boy wants is a toy car.孩子想要的是一辆玩具车。What... [查看全文]

一、主语从句：从句作主语谓语动词用单数形式Whoever says that is wrong.无论谁说这话都不对。That he will come is certain.他... [查看全文]