为什么这里要用since和as,而不用because?我有两个疑问想请教大家：1、______I didn"t know English,I had to ask someone to be my interpreter.2 、you walk ahead ______ you know the way better .这两题是张道真语法上的题目

(英语)这里为什么用since不用till?We have lived here ________ we moved to Shanghai.A.whenB.tillC.sinceD.as我选了B请大人分析 He has lived here since 1992.这里为什么用has lived而不用has been living? 为什么这里要用since和as,而不用because?我有两个疑问想请教大家：1、______I didnt know English,I had to ask someone to be my interpreter.2 、you walk ahead ______ you know the way better .这两题是张道真语法上的题目 为什么这里要用since和as,而不用because?我有两个疑问想请教大家：1、______I didnt know English,I had to ask someone to be my interpreter.2 、you walk ahead ______ you know the way better .这两题是张道真语法上的题目 为什么这里要用since和as,而不用because呢?我有两个疑问想请教大家：1、______I didnt know English,I had to ask someone to be my interpreter. 2 、you walk ahead ______ you know the way better . 这两题是张道真语法上的 I will go as soon as I have finished my lesson.这里的从句为什么要用现在完成时而不用原形? as if虚拟句She treats him as if he were a stranger.她待他如陌生人.为什么这里要用he were 而不用was the teacher gave us so difficult a problem as most of us can't work out这里为什么要用as而不用that呢? I know how you like birds,she said as she stood looking down at my face.为什么用as这里为什么用as 而不用when呢 1> Milk turn sour ___it:s in a fridge a.until b.since c.as d.will give1> Milk turn sour _____it;s in a fridge a.until b.since c.as d.will give 2>the shop assistant said she knew为什么用lived,而不用lives 3》———aloud to me while i do the I've never seen such a beautiful movie Hero as is directde by Zhang yimou.为什么用as 而不用which? as在这里何解? 2.It is six months_____I last saw him.A.after B.for C.with D.since 为什么用since 而不用after His name is Marco Polo,and it is 750 years ____ he was born.A.before B.after C.since D.as soon as为什么要用since?顺便总结一下since,as soon as的用法 on 和with的区别 He teaches himself English _ the radio.这里为什么要用on而不用with? 【高考】定语从句The book was written in1946,___the education system has witnessed great changes.A.when B.during when C.since then D.since when答案选D 为什么要用since?为什么要用when不用其他引导词?那这里先行词是BO she must have been ill.------she didn come to school yesterday .A for B because C since D as为什么用FOR 不用BECAUSE? Were you at butcher's,too?这里为什么要用too,而不用either”这里为什么要用too,而不用too的否定形式either” as is often the case 和 as often happens为什么第一个中要加is而第二个不用呢?