就像unless,while,until,as,thus,even,however,since,then等都属于英语中的什么词啊?

就像unless,while,until,as,thus,even,however,since,then等都属于英语中的什么词啊? 一道高中英语题9Owen wouldn’t eat anything （ ）he cooked it himself.A until B since C unless D while为什么选unless而不是while? You can't leave the workshop ____the machine is running.A.unless B.until C.while D.before unless和until的区别, The baby was on the point of crying ____ her mother finally came home.A.when B.unless C.while D.until选A 为什么 顺便翻译一下 she hates to do housework,and she does not want to get married__ she is at least thirtyA.until B.unless C.after D.while —i was in the US ,i made a lot of american friends.A while B although C unless D until 为啥选A until 与unless的区别是什么 unless until if. notunless until if. not 区别用法 so that when while unless after until as soon as if because so……that 1.I will go there byso that when while unless after until as soon as if because so……that I will go there by train __ I want to enjoy the scenes VB用法：while..loop loop..while loop..until until..loop until after while when 区别 while until when的区别 一道英语状语从句练习题When shall we go planting trees on the hill?___it begins to rain,so they don`t need watering.A not until B while C till D unless 为什么选C不可以? I'sure he will solve the problem successfully ( )I'sure he will solve the problem successfully ( )A、while he is working hardB、unless he tries it againC、if he tries it againD、until he tries it again 9.____ I admit that there are still some problems about the traffic in this area ,I don't mean that it can't be solved.A.While B.Until C.unless D.As为什么不是其它选项?尤其是D? _ I admit that there are still some problems about the traffic in this area,I don't mean that it can't be solved.A.While B.Until C.unless D.As 为啥? I felt somewhat disappointed and was about to leave,___ something occurred attracted my attention.[A] unless [B] until [C] when [D] while为什么选C?请翻译句子