课本用英语怎么说?

书面用语应该是course book：A course book is a textbook that students and teachers use as the basis of a course. 口语一般说textbook的，记得大学老师上课时会说"Open your textbook…"之类的话的。

textbook英 [ˈtekstbʊk] 美 [ˈtɛkstˌbʊk] n.教材;教科书;课本adj.规范的;标准的I gave the textbook back to him. 我将课本还给他了。This textbook contains 25 lessons. 这本教科书共有25课。I mislaid my English textbook. 我不知把英语课本丢在哪儿了。

teaching material