主语和谓语保持一致叫主谓一致，即谓语动词的形式必须随着主语单、复数形式的变化而变化。主谓一致原则:1、语法上的一致所谓语法一致原则，即主语和谓语的语法形式在人称和数上取得一致。谓语的单、复数形式依据主语的单、复数形式而定：主语为复数,谓语动词用复数；主语为单数或者是不可数名词，谓语动词用单数。China belongs to the Third World. 中国属于第三世界。We are sure he will come。 我们肯定他会来。使用语法一致的情况（1)当主语是 and,both…and 连接的并列结构假如主语指的是两个或两个以上的人或物，则谓语动词用复数。My mother and I have seen the film。 我妈妈和我已看过这部电影.Both rice and wheat are grown in this part of China. 在中国的这个地方既种稻子又种小麦。注意：由 and 连接的并列主语前面分别有 each,every,no 修饰时，其谓语动词用单数形式.Every boy and every girl has to receive education in our country。 在我国每一个男女孩子都得受教育。No student and no teacher was invited to the party。 师生没有被邀请参加晚会。（2）主语后面接说明主语的修饰语主语后面接说明主语的修饰语如：with,along with，together with,as well as，like，rather than，but，except，besides，including，in addition to，谓语动词不受修饰成分的影响，仍保持同主语一致的关系。The teacher with two students was at the meeting. 那位老师和两个学生参加了会议。The girl as well as the boys has learned to drive a car。 这个姑娘和男孩子一道,也学会了开汽车.A library with five thousand books is offered to the nation as a gift。一个有 5000 册书的图书馆作为礼物赠送给了国家.E-mail, as well as telephones, is playing an important part in daily communication.电邮和电话在日常的通信中起着很重要的作用.Nobody but Jane knows the secret。只有简知道这个秘密.All but one were here just now. 刚才除了一个人外都来了.（3)非谓语动词或从句作主语非谓语动词 （动词的-ing 形式、不定式）或从句作主语时，谓语一般用单数形式。When and where to build the new factory is not decided yet.什么时候在什么地方建新工厂还没定下来。Che...
