textbook是可数名词吗

　　textbook例句

　　Whose textbook is this?

　　这是谁的教科书?

　　We all have textbook.

　　我们都有课本。

　　We all read textbook together.

　　我们都一起念课本

　　She wrote a textbook on international law.

　　她写了本国际法教材。

　　The house is a textbook example of medieval domestic architecture

　　这所房子是典型的中世纪民居。

　　France Telecom is a textbook model of what can be achieved by a state-owned company.

　　法国电信是国有公司成功的典范。

　　I gave the textbook back to him

　　我将课本还给他了。

　　Long passages in this textbook have been lifted from other authors.

　　此教科书中有几大段是剽窃其他作者的。