怎样学习语法一致原则

由some, several , both, few, many , a number of 等词修饰主语，或是由它们自身作主语时应看作复数，谓语动词用复数，另外，由and连接两个主语时，谓语一般用复数

例如On the seashore, some people are playing volleyball and some are lying in the sun海边有人打排球，有些人在躺着晒太阳

有些短语，如a lot of, most of, any of, half of, three fifths of, eighty percent of , some of, none of等后接不可数名词，或是单数形式的名词作主语时应看作单数，谓语动词用单数

但如果后接可数名词的复数形式作主语时应看做复数，谓语动词用复数，例如a lot of money in the shop was stolen yesterday when the electricity was suddenly cut off

当主语后面接由as well as , as such as , accompanied by , including, in addition to , more than , 等引导的词组时，其谓语动词的形式要依主语的单复数而定

例如Petroleum, along with fuel gas , has recently risen in price，其意思是最近石油和燃气的价格上涨了