编程实现：编程实现英文词频统计： 文件words.txt内容如下所示： Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. Complex is better than complicated. 读取文件中内容，要求统计文件中英文单词的个数，输出单词及出现次数。

以下是Python代码实现：

import re

# 读取文件内容
with open('words.txt', 'r') as f:
    text = f.read()

# 将所有非字母字符替换为空格
text = re.sub(r'[^a-zA-Z]', ' ', text)

# 将所有单词转换为小写
text = text.lower()

# 将文本分割成单词列表
words = text.split()

# 统计单词出现次数
word_count = {}
for word in words:
    if word in word_count:
        word_count[word] += 1
    else:
        word_count[word] = 1

# 输出单词及出现次数
for word, count in word_count.items():
    print(f'{word}: {count}')

运行结果：

beautiful: 1
is: 4
better: 4
than: 4
ugly: 1
explicit: 1
implicit: 1
simple: 1
complex: 2
complicated: 1

其中，`words.txt` 文件内容为：

Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. Complex is better than complicated.