He is more a friend than a teacher.

　　　　He is more lazy than stupid.

扩展：1)more than:不仅仅；多于；十分；例如:

　　　　He is more than a teacher in our school.

　　　　He made more than ten friends in this club.

　　　　She is more than beautiful.

　　　2)rather than 而不是；less than少于；other than除......之外

3. ...they include Canadian, British, American, Australian and India English.

include 包含, 包括

　Eg.你应该在文章中举一些例子。

　　　You should include some examples in the text.

　　including (prep.) included (adj.)

　　　eg.The bill came to $450, _______tax.

　　 The bill came to $450, tax______.

　contain和include

　　　contain指某物包含的内容或成分 "含有，装着"

　　　include指包括作为整体的一个部分或要素"包括，包含"

　　　　　Eg. ①这篮子装有各种水果。The basket__________ a variety of fruits.

　 ②这旅程包括游览巴黎。 The tour __________a visit to Paris.

4. ...English plays an important role as a first or second language...

play a role：扮演角色 play a part：参加活动

play a/an ... role in sth.=play a/an... part in sth.

扮演......的角色, 对...起...的作用

Eg. Monitor ________________________in managing a class.

　　 班长在班级管理中起着重要的作用。

　　　他一生中扮演了各种各样的角色。___________________________________________

她积极参加了晚会。_______________________________________________________

5 ... either because of foreign rule or because of its special role as an international language.

　　because of 因为（某人/某事）后接名词或代词

　　because 因为 ，连词后接从句。

　　Eg.他们是因为我们来到这里的。______________________________________________

因为下雨，我们迟到了。____________________________________________________

6.Native English speakers can understand each other even if they don't speak the same kind of English.