How do form this sentence "I want (object) to (verb/be) that..." in Chinese? I want (object) to (verb/be) that...

For examples :


I want you to know that you are not alone anymore
I want her to be my wife
I want my brother to help me with my homework
I want you to be mine


Etc.
我想要(object)(verb/be)……

e.g.


我想要你知道你不再孤独
我想要她成为我的妻子
我想要我哥哥帮我做作业
我想要你成为我的