1.The book is new.主语
2.Books can act as our friends.主语
3.Do you like English?动宾
4.There is a book on thedesk.介宾
5.He is a student.表语
6.It sounds a good idea.表语
7.He lives in a stone house.定语
8.He is waiting at the bus stop.定语
9.Our head teacher,Mr.Smith,is coming.同位语
10.Tom,my best friend,was praised this morning.同位语