What part of speech is this word?

这个词的词性是什么？

What part of speech is it?

这是什么词类？

Do you know the part of speech of this word?

你知道这个单词的词性吗？

What part of speech is this word in this sentence?

在这个句子里这个单词是什么词性？

Gambit is a very important part of speech.

开场白是演讲稿中很重要的部分。