课题的英语是subject。
subject的释义：主语；主题；课题；学科；题目；对象；科目；课程；国民；臣民；臣服者；主体；主观；我；自我。复数是subjects，第三人称单数是subjects，现在分词是subjecting，过去式是subjected，过去分词是subjected。鲁迅《集外集拾遗·＜新俄画选＞小引》：“依着环境而将各个新课题，从新加以解决。”
萧乾《鱼饵、论坛、阵地》：“更伤脑筋的课题是：如何使刊物编得既不太死板而又有些分量。”《二十年目睹之怪现状》第十五回：“前年冬季，上海格致书院的课题是这里方伯出的。齐了卷寄来之后，方伯寄给我看，我将他的卷子取了超等第二。”
例句：
1、Herresearchhasopenedthedoortoadeeperunderstandingofthesubject.
2、TheGreekswerethefirstsubjectpeopletobreakfreefromOttomanrule.
3、AgoodgeneralintroductiontothesubjectisASocialHistoryofEngland.
4、Wehavelosttheinitiativeandallowedouropponentstodictatethesubject.
5、Thesebooksformthemostsustained***ysisandilluminationofthesubject.
6、Aweddingistheperfectsubjectforvideo.
7、Thefileshavelabelsthatarecolour-codedaccordingtosubject.
8、I'mdoingsomeresearchonthesubject.
9、Letusapproachthesubjectfromadifferentdirection.
10、She'ssearchingforsubjectmatterforhernewbook.
