为什么put it on 与get over it

为什么put it on 与get over it get over it与get it over 的区别 get it over 还是get over it get it over 还是 get over it? get it over错? just get it over put it on还是put on it? get it get it on 英语：“put it on"为什么在中间加”it"呐? 在英语中何种情况要把主语前置?如put it on; think it over. turn it on,put on 艾薇儿有一首歌,是 get it over ,还是get over it?