起因：先前汉英尝有一贴云“It's you who deserve...”鄙人自作聪明改之为“It's you who deserveS...”。汉英见此，先是一怔，但又不知谁对谁错，只说凭第六感以为应是“deserve”，并求各方家在理论上予以释疑。及后，我找了好几本语法书，结果一无所获，只在《薄冰英语语法》4.6引词it的用法里找到一句：“It'snot I who am angry”，因而证明汉英“It's you who deserve...”是对的。
有汉英一例在此，加上诸位的贴间或亦有语法错误（或有争议之处），
窃以为有必要重新学习或温习。故不揣冒昧，专选了薄冰一书第十八章《数的一致》（选其容易出错之处），与各位方家共同学习，或曰温故知新。不当之处，欢迎指正。
数的一致
一、概说
数的一致涉及三个基本原则，即：
1、语法一致(grammatical concord)，即形式上的一致。如：The
boy shows his mother much attention.
2、意义一致（notional concord)，即意义或意念上的一致。如
1）The crew are paid to do all
the work on the ship.(单形名词主语要求复数谓语动词，the
crew表一个集体的成员）
2）Five minutes is enough.（复形主语要求单数谓语动词，five
minutes表一个数目）
3、邻近原则（principle of
proximity)，即指谓语动词的形式与邻近的一致。如：
a man of abilities are needed.(动词are不与主语a
man一致，而与其邻近的复形名词abilities形式上一致）
二、单形名词与动词的一致
单形名词在句中作主语时用单数动词。
1、单形集体名词被视为一个整体时，用单数动词。如：
1）Our family has a reuion
every year.
2）The enemy is retreating.
被视为若干个体时，则要求复数动词。如：
3）His family are waiting for
him.
4）The enemy were encamped on
the hill side.
有些单形集体名词，即所谓的“群体名词”，如police,
militia, cattle等，则要求复数动词。如：
5）The police have caught the
murderer.
6）In that village the Wiltshire militia were
quartered.
【注】单形集体名词之后用什么动词形式,往往因人而异英国和美国的习惯也不完全一样.英国较多用复数动词,如The
government are determined to resist aggression,美国英语则多用单数动词.
2、“More than one＋单形名词”结构虽有复念，习惯上多要求单数动词。如：
7）More than one question was asked.
8）More than one person is involved in
this.
但“more＋复形名词＋than one”结构一般却多要求复数动词。如：
9）More members than one have protested against
the proposal.
“a＋单形名词＋or two”结构多要求单数名词。如：
10）A day or two is enough.
11）A servant or two or three was to
accompany them.
“one or two＋复形名词”结构则要求复数动词。如：
12）One or two reasons were suggested.
“many a＋单形名词”结构要求单数动词，这种结构多用于正式文体。如：
13）Many a fine man has died in
that battle.
14）There's many a slip twixt
the cup and the lip.
3、在“两个形容词＋一个单形名词”结构中，单数名词如有复念（即代表两个事物），则应用复数动词。如：
15）The red and the white rose are both
beautiful.
16）English and French grammar are not
very difficult to learn.