I know you want to play leading actor.

我知道你想演主角。

I just loooove the leading actor in it!

我真是爱死这部电视剧的主演了！

The leading actor was sure of his lines.

那位主要演员对台词记得很熟。

It's the character of the leading actor.

这就是主角的特点。

Christy: The log's leading actor is nail!

小茉莉：日志的主角是钉子！