you may rely on it that she is sure to attend the party.i'll appreciate it if you help me with my

问题描述:

you may rely on it that she is sure to attend the party.i'll appreciate it if you help me with my
English.这两个it的用法是什么啊,感觉很像啊,能总结这类的用法吗

you may rely on it that she is sure to attend the party.
it指代she is sure to attend the party
i'll appreciate it if you help me with my English.
it 指代if you help me with my English那是定语从句吗不是,而是宾语从句。