(一) and, both...and 连接名词或代词做主语

A．谓语一般用复数形式。如：

(1) Li Lei and Liu Mei are both interested in English. 李蕾和魏方都对英语感兴趣。

(2) He and she are good friends. 他跟她是好朋友。

B．and 连接的两个成对的名词，如fork and knife, bread and butter；soda and water； coffee and water；aim and end；salt and water等，虽有and 连接，但仍表示单一的概念，谓语动词常用第三人称单数形式。如：

(1) Where is your fork and knife? 你的刀叉在哪儿？

(2) Is the bread and butter enough for you two? 你们两人吃这一点面包和黄油够了吗？

C．and 连接的两个名词若是指同一个人, 即： and前的名词前有冠词,而and后面的名词前没有冠词。谓语动词常用第三人称单数形式。如：

I’m told that the monitor and League secretary is ill today. 我听说班长兼团支书今天病了。

D．and所连接的连个名词前分别有: every, each, no, many a等修饰时，谓语动词用第三人称单数形式。如：

(1) Every boy and every girl enjoys themselves in the school. 在学校，每一个男孩和女孩都玩得挺开心。

(2) Many a teacher and many a student has spoken at the meeting. 在会上，很多老师和学生发了言。

(二) 主语是：连接词or, either…or…, neither…nor…, whether…or…, not…but…, not only…but also…等连接的名词或代词时，谓语动词的形式须跟与之最接近的名词或代词决定。如：

(1) Neither he nor you are to blame. 他和你都不应该受责备。

(2) Is neither he nor you to blame?  他和你都不应该受责备吗？(from www.hxen.com)

(三) 主语是：介词in, out of, with, except, besides, without, as well as, no less than, rather than, more than, but, along with, together with, like, including, in addition to等所连接的两个名词时，谓语动词的形式应与这些词前面的名词的数保持一致。如：

(1) At the meeting, one in four is against the decision. 会上由四分之一的人反对这一决议。

(2) The teacher with his students is discussing a question. 老师和学生们在讨论问题。

(四) one and a half + 名词复数做主语，即名词超过一，但不满二时，谓语动词用第三人称单数形式。如：

One and a half oranges is enough for the baby. 这个孩子有一个半桔子就够了。
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