down是副词还是介词

down是副词还是介词 A stranger noise came from down below.里面down 是介词 还是副词? in是副词还是介词 始终是副词还是介词? for是介词还是副词 it sent sparks down to the ground...请问down在此是介词还是副词啊?怎么判断? please,sit down中的down是介词还是副词?为什么会出现sit down on one of these chairs这类结构? 副词和介词的区别turn down the radio中的down是副词还是介词,get on the bus中的on是副词还是介词,代词（如it）加在哪个位置.为什么?如何区别?2楼的，那如何区别是介词还是副词 give up,up是介词还是副词? along是介词还是副词呢? in need是介词短语还是副词? such as是介词还是副词短语 she is looked down （on） by her friend.要不要加on啊?down作介词还是副词啊?被动语态如果是不及物动词+副词,不跟宾语,后面还要加介词吗?要主谓宾齐全吗?快. keep your voice down控制你的声音能不能说keep down your voice 是副词短语中代词放中间还是介词短语? 怎样判断这个词是做介词还是副词比如She slipped and fell down the stairs,hurting her leg.此句中的d...怎样判断这个词是做介词还是副词比如She slipped and fell down the stairs,hurting her leg.此句中的down是做介 问为什么he went down 里的down是副词而he went down the ladder里的down是介词? turn off的off在这里是介词还是副词? get up中up,是介词还是副词