since you ———the most difficult exam ,you have nothing to worry about nowA,pass B passed C had passed D have passed主要是AD的讲解,since后加完成时是不是要可持续动词

—How long have you had the bike?—Since last week什么时态为什么用have和had？ since you ———the most difficult exam ,you have nothing to worry about nowA,pass B passed C had passed D have passed主要是AD的讲解,since后加完成时是不是要可持续动词 —I'm going to the supermarket.—Will you get me some chocolate _________ you are there,mum?A.since B.because C.if D.while I don't have to introduce him to you —— you know the boy .A) until .B) unless.C) since D) so理由： since引导一个时间状语从句时,时态since引导一个时间状语从句时,从句何时用一般过去式,何时用现在完成时?例如：——Have you known Dr.Jackson for a long time?------Yes,since he jioned the Chinese Society.since since you ask,l will tell you 句型转换—— ——could we play football in your playground,sir ——No,( )you have the principals noteA;if B；unless C:because D；since The fadtory has been here since the 1970s 划线部分（since the 1970s )提问 ———（三个空）the factory been here? Have you known Dr jackson for a long time?—Yes,since she()the chinese societyA has joined B joins C had joined D joined 要解析 Since the day that you were gone 英语翻译Since the day I was born,I began to have a proud name—Chinese.Since the day I began to talk,the most beautiful sentence I’ve ever learnt has been “I love you,China I love you,China,and I’m so proud of being a Chinese.I’m proud t 英语翻译Since the day I was born,I began to have a proud name—Chinese.Since the day I began to talk,the most beautiful sentence I’ve ever learnt has been “I love you,China I love you,China,and I’m so proud of being a Chinese.I’m proud t since引导一个时间状语从句时,从句何时用一般过去式,何时用现在完成时?例如：——Have you known Dr.Jackson for a long time?------Yes,since he jioned the Chinese Society.since后的句子为什么是一般过去式,而不 —When（） you （）the army?In 1978.Since I （）17 years oldA.have...joined；wasB.did...join;wasC.have...joined;have beenD.did join;have been—When（） you （）the army？— In 1978.Since I （）17 years old how　long　have you been in China?——Since last Wednesday 啥意思 How long have you been like this?——Every day since （ ）mouth. it's ten minutes since the meeting began改为同义句the meeting -—— —— —— since ten minutes ago. when did you start skating?——（ ）A：since 2 years agoB：since i was 9 years oldC:for 6 hoursD：five years ago