For this purpose 为此 wei ci Once this has been done 一旦这项工作完成 yi dan zhe xiang gong zuo wan cheng Usually, 通常 tongchang Compared to A, B is 相对于 a b 是 xiang dui yu a b shi In order to 为了 wei le Before doing… we must…. 在干。。。前，我们必须干。。。 zai gan 。。。qian，wo men bi xu gan。。。 It is surprising to find that… 惊讶的发现 jing ya de fa xian As long as 只要 zhi yao Unless… 除非 chu fei Only once A has happened, then B A 发生了，B才发生 A fa sheng le ,B cai fa sheng i need a break ,if you want to learn more (free) ,please call me ,skype id :hero7702 msn:[email protected]

For this purpose 因此 yin1 ci3 因= for or because 此= this Once this has been done 一yi1旦dan4这zhe4个ge4完wan2成cheng2了le usually 通tong1常chang2情qing2况kuang4下xia4 OR 一yi4般ban1来lai2说shuo1 (i think this is more like "generally speaking") Compared to A, B is 跟gen1A比bi3，B... In order to 为wei4了le Before doing, we must...在zai4……之zhi1前qian2，我wo3们men2必bi4须xu1得dei3 It is surprising to find that 令ling4人ren2惊jing1讶ya4的de是shi4 i have to say that I don't think people use this conjugation a lot... As long as... 只zhi3要yao4 although 尽jin3管guan3 Even if 就jiu4算suan4 a extremely hypothesis As soon as 尽jin4早zao3 i have a question about this. did you want to say as soon as possible ? Unless 除chu2非fei1 only once A has happened, then B 只zhi3要yao4A……B就 jiu4 Though = Although Whatever 不bu4管guan3怎zeb3样yang4or 无wu2论lun4如ru2何he2 Neither 都dou1不bu4？you'd better give me a example X has not happened yet... x还hai2没mei2有you3发fa1生sheng1？ sounds a little strange... Whereas A 鉴jian4于yu2 Rather than 宁ning2 or ning4(am not sure)愿yuan4 As long as 只zhi3要yao4 I did my best but few of those sounded weird. So if you have any further question, feel free to contact me~ [email protected]