get out the front door为什么不是get out of the front door?

get out the front door为什么不是get out of the front door? go out the front door,go out of the front door哪个正确,为什么,什么情况加 get out the door faster get out in front of He (get)out of the door in ten minu look for me in front of the door get off at the cinema find out of the door step out of the door She is in front of the door.(特殊划线部分是in front of the door) Does jill take the key to the front door?这句中take 可以同get can I have the key to the front door,please?I can't get home key of the front door还是key to the front door?