查看“单复数”的源代码

==可数名词==

*emission,resolution, wavelength,detail,continumm

*单复数同形的名词： literature，staff,faculty

*不规则复数形式
:index --> indices
:formula --> formulae
:locus --> loci
:torus --> tori
:modulus --> moduli
:nebula --> nebulae

*一对的东西(glasses,trousers,clothes)要用pair, suit,
:a pair of glasses

*集体名词，如committee, majority 视语境采用单复数

*as follow 应该为 as follows 或者 as following

==不可数名词==

*irradiation,illumination

*比如evidence,information,equipment,manpower, advantage等抽象名词
*可以用a lot of, a piece of, many/several pieces of
*单位符号没有复数

==其它==
*different, various 等表示大于1的数字时候，后面接负数
:different kinds of 
:1.3 meters

*否定形式后面也可以接复数
:Not any are working.

*That,It 用第三人称单数, which,that不一定
:there are four apples that belong to me

*Everyone本身是单数，但是对应的意思是复数
:Everyone wants their work published quickly.

*every总是修饰单数名词，后接单数动词。
:Every one of them goes to the same factory.

*each作为形容词，修饰单数名词，接单数动词。作为代词，单独使用，接单数动词；放在复数名词和代词后作同位语，接复数动词。
:Each man carries his own bag. （修饰单数名词）
:Each carries his own bag. (代词)
:We each have our own office. (作We的同位语).

*each of +名词复数作主语，后面的谓语动词用单数。
:Each of them goes to a different factory.