将单词转换为特定的词性（POS）格式？

Question

有一个词，是否有可能使用NLTK将该单词转换为特定的词性（POS）形式？例如，给定单词“run”，我可以要求NLTK将其转换为以下任何一种：

VBZ: runs, as in "George runs to the store."
VBD: ran,  as in "George ran to the store."
VB:  run,  as in "George wants to run."

等。如果是，对于名词一样吗？ e.g：

NN:  run,  as in "George wants to run."
NNS: runs, as in "George went for two runs."
NNP: Run,  as in "George had dinner at Run."

Answer 1

您应该尝试pattern

它具有以下功能：

• 多元化+单一化
• 比较+最高级
• 动词共轭
• 定量

希望这有帮助。