讲题的英文：
a subject; a topic
He was tolerably eloquent and the subject of his sermon was charity
他颇有口才，讲题是“慈善”。
n. 主题；话题；学科；主语；国民
adj. 易遭受…的；服从的；受制于…的；统治下的
v. 使…隶属；使屈从于；提供
optional subjects
选修科目
It is a mythical subject.
这是个虚构的主题。
a survey of the situation, subject
对情况、 问题的概括论述
The tense used is decided by the subject.
所用的时态取决于主语。
To subject to the process of division.
除法依除法的过程而定
n. 论题；话题；主题；题目
This is a favorite topic.
这是个大家爱谈论的话题。
That is a favorite topic.
那是个大家爱谈论的话题。
Expand on a favorite topic.
详述一个感兴趣的论题
They discussed the weather and other topics.
他们讨论了气候和其他的话题。
relating to or constituting a topic of discourse.
关于论文的主题，或组成论文的主题。