从字符串中删除不必要的单词

import re

def remove_unnecessary_words(sentence):
    unnecessary_words = ["the", "a", "an", "in", "on", "and", "to", "for", "with"]  # 不必要的单词列表

    words = re.findall(r'\b\w+\b', sentence)  # 使用正则表达式拆分字符串为单词

    filtered_words = [word for word in words if word.lower() not in unnecessary_words]  # 过滤不必要的单词

    result = ' '.join(filtered_words)  # 将过滤后的单词重新组合成字符串

    return result

# 示例用法
sentence = "The quick brown fox jumps over the lazy dog."
result = remove_unnecessary_words(sentence)
print(result)