hand over hand in区别

hand in是递交 上交的意思,别人要求,具有强迫性!hand over 是移交 让与 是自己让权,具有主动性!

hand in (handing,handed,hands)
1.PHRASAL VERB If you hand in something such as homework or something that you have found, you give it to a teacher, police officer, or other person in authority. 上交 (作业或失物等)
例：
I'm supposed to have handed in a first draft of my dissertation.
我本应将论文初稿交上去。
2.PHRASAL VERB If you hand in your notice or resignation, you tell your employer, in speech or in writing, that you no longer wish to work there. 递交 (辞呈等)
例：
I handed my notice in on Saturday.
星期六我递交了辞呈。
hand over (handing,handed,hands)
1.PHRASAL VERB If you hand something over to someone, you give them the responsibility for dealing with a particular situation or problem. (把某事) 交给…负责
例：
I wouldn't dare hand this project over to anyone else.
我可不敢将这个项目交给其他任何人负责。
2.PHRASAL VERB If you hand over to someone or hand something over to them, you give them the responsib