如何在字符串python中找到句子时提取下一个单词

import re

def extract_next_word(sentence):
    # 匹配句子的正则表达式
    sentence_pattern = r'[A-Z][^.!?]*[.!?]'  # 匹配以大写字母开头，以句号、问号或感叹号结尾的句子

    # 匹配单词的正则表达式
    word_pattern = r'\b\w+\b'  # 匹配由字母或数字组成的单词

    # 查找句子
    sentences = re.findall(sentence_pattern, sentence)

    if sentences:
        # 提取下一个单词
        next_sentence = sentences[-1]  # 获取最后一个句子
        words = re.findall(word_pattern, next_sentence)
        if len(words) > 1:
            next_word = words[1]  # 获取第二个单词
            return next_word

    return None

# 测试
text = "This is the first sentence. This is the second sentence."
next_word = extract_next_word(text)
print(next_word)

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