for變on，you變they。
1、We have great faith and high hopes for改成onher.
2、An important thing for the student to remember is that when writing a paper,you改成they，代詞錯了should not plagiarize.
用法
1）人稱代詞的主格在句子中作主語或主語補語，例如：
John waited a while but eventually he went home.約翰等了壹會兒，最後他回家了。
2）人稱代詞的賓格在句子中作賓語或介詞賓語，但在口語中也能作主語補語，第壹人稱在省略句中，還可以作主語，例如：
I saw her with them,at least,I thought it was her.
我看到她和他們在壹起，至少我認為是她。（her做賓語，them做介詞賓語，her做主語補語）