从句——名词和名词性从句

1、名词在句子中可以充当什么成分

（1）名词充当主语：The book looks terrific.

（2）名词充当宾语：I appreciate the man.

（3）名词充当表语：He becomes a businessman.

（4）名词做同位语：I enjoy the part,the end.

同位语就是用来解释名词的成分。

eg:My boyfriend ,an undergraduate from civil engineering, looks handsome.

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