它可以作动词的宾语，也可以作介词的宾语，还可以作“be+形容词”的宾语.例如:动词宾语:He said he was good at drawing.这里“he was good at drawing”作动词“said”的宾语.
The tall man is my father. Who is the tall man ?Jerry always did her homework after supper. When did Jerry always do her homework ?
