例句：
All and half与可数名词和不可数名词连用均可。
All and half can be used with countable and uncountable nouns.
在这些例子中，单词weight（秤砣）叫作可数名词。
The word "weight" is called a countable noun in these examples.
travel做名词的时候指的.是旅行这种行为本身，通常用作不可数名词。
As a noun,'travel'refers to the activity in general and is generally used as an uncountable noun.
Work，labour，toil均为不可数名词，指做工作的行为。
Work, labour and toil are uncountable nouns indicating the activity needed to perform a job.