What part of speech is "than"?

What part of speech is than? 英文part of speech Part of speech-thx 英文Part of speech. 英文Part of speech part of speech中的part是什么意思 请用英语回答：What's offline of the part of speech? part of speech of it什么意思? part of speech 为什么翻译成“词性”? knowing what part of speech a word is helps me to understand better为什么用helps有is为什么用helps 请用英语回答：What's the difference between part of speech and member of sentence in english?请大家用英语帮我回答下：“What's the difference between part of speech and member of sentence in english?”这个问题,不用太多,100 write down the part of speech of the following words求翻译 please point out the part of the speech of the underlined words What do you think of the speech yesterday? what do you think of his speech同义句 what figure of speech is used in the novel? What is figure of speech?用英语论述 what is the majoy figure of speech employed