leave out 与 leave behind有何区别?

leave off,leave out,leave behind和 leave leave to与leave behind相 I told him has to leave 与 I told him to leave.有何区别?第二句leave是 leave behind leave 与leave to区别 是leave behind friends还是leave out friends “stay behind”和“leave behind”分别是何意? forget与leave区别 leaves与leave有什么区别 go与leave有什么区别 leave与leave from的区别 leave to 与leave for 区别?