课题的英文：
subject
task

参考例句：

Colon cleansing is a controversial subject.
结肠清洗是一个争议性的课题。

Psychology is a fascinating subject.
心理学是一门很有趣的课题。

Peace and development are two major issues in the world today.
和平与发展是当今世界的两大课题。

When will you be through with the project?
你什么时候完成这个课题？

an exhaustive lecture on a certain subject
关于某一课题的详尽讲解

This subject is past my research work.
这课题超出了我的研究工作范围。

I fully endorse your opinions on this subject.
我完全拥护你对此课题的主张。

This subject has never been paid any serious attention.
这个课题从未被认真考虑过。

The evolution of modern motor car is an interesting subject.
现代汽车的发展是一个很有趣的课题。

She showed an affected interest in our subject.
她假装对我们的课题感到兴趣。

subject是什么意思：
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

task是什么意思：
n. 任务，工作；作业；苦差事
v. 派给…任务；使辛劳；向…课税

This is a painful task.
这是一份不愉快的差事。

a painful task.
费力的工作

The task is complete.
任务完成了。

You must admit the task to be difficult [ that the task is difficult ].
你应当承认这项任务是艰巨的。

You must admit the task to be difficult [that the task is difficult].
你必须承认这项任务是困难的。