可的，这也很常见。
She realizes that if she loves the hero who saved the child who dropped into the water, she will get what she wants
分析：that if she loves the hero who saved the child who dropped into the water, she will get what she wants 宾语从句
if she loves the hero who saved the child who dropped into the water条件状语从句
who saved the child's life 定语从句
who dropped into the water定语从句
what she wants 宾语从句
翻译：她意识到,如果她爱那位救起落水孩子的英雄的话,她将得到她想要的东西.
