2018年雅思写作语法学习：Appositives 同位语

 　  Appositives

　　同位语

　　Remember that nouns are words that name a person, a place, a thing, or an idea.

　　名词可以命名人、地点、事物或观点。

　　Nouns can function as appositives. An appositive is a noun or noun phrase that renames another noun that comes right before it.

　　名词可以作为同位语。同位语是名词或名词短语，可以指代之前出现的名词的。

　　When the appositive is nonessential, you set it off with commas. Nonessential means that you don't need the appositive to completely understand the sentence.

　　不必要使用同位语时，可以用逗号。不必要使用表明不需要用同位语就可以完全理解句子。

　　When the appositive is essential, you do not use commas.

　　需要使用同位语时，就不能使用逗号隔开。

　　同位语的例子：

　　1:My teacher Mrs. Jones is very nice.

　　我的老师Mrs. Jones太太非常和蔼。

　　"Mrs. Jones"指代老师。

　　2:The book Black Beauty is about a horse.

　　Black Beauty这本书讲的是一匹马。

　　"Black Beauty"指代这本书。

　　3:Karen, the girl sitting behind me in class, is wearing a green shirt.

　　上课坐在我后面的女孩Karen穿了一件绿色的裙子。