在一段英文文本中，统计每个单词出现的次数。


文本：This is a text, it contains some words. Some words will appear more than once.
This: 1 

is: 1 

a: 1 

text,: 1 

it: 1 

contains: 1 

some: 2 

words.: 1 

will: 1 

appear: 1 

more: 1 

than: 1 

once.: 1