表示推测的英语怎么说

表示推测的常用英语表达有：
"presume"，这个词源自拉丁文 "praesumere"，意思是 "take for granted"，引申为 "assume to be true without proof"。例如：
I presume you're here to see the boss. (我猜你是来见老板的。)
It is presumed that the earth is round. (人们推测地球是圆的。)
"infer"，这个词源自拉丁文 "inferre"，意思是 "bring in"，引申为 "deduce or conclude from evidence or premises"。例如：
I inferred from his tone that he was angry. (我从他的语气中推断出他很生气。)
We can infer from the data that the company is doing well. (我们可以从数据中推断出这家公司经营得很好。)
"conjecture"，这个词源自拉丁文 "conjectura"，意思是 "throw together"，引申为 "a supposition or surmise based on incomplete evidence"。例如：
It is only a conjecture that the earth is round. (地球是圆的只是一种猜测。)
His theory is based on conjecture, not on solid evidence. (他的理论仅基于猜测，而不是坚实的证据。)
"speculate"，这个词源自拉丁文 "speculare"，意思是 "observe"，引申为 "consider possible or probable"。例如：
I'm just speculating, but I think he might be upset. (我只是猜测，但我觉得他可能会不高兴。)
The market is speculating about the future of the company. (市场正在猜测这家公司的未来。)