it had been a long time ,since sb was a girl.这个过去完成式,had bee

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it had been a long time ,since sb was a girl.这个过去完成式,had been

首先,since前面是不可以加逗号的,因为既不是特殊句型也不是并列句哦
本句的翻译：从她过去是一个女孩开始已经有很长的时间了.
have been是现在已经,had been是过去已经的意思,所以前者叫做现在完成时,后者表示过去完成时.区分的话背结构是肯定背不下所有的而且会容易错的,要理解所表示的时间就可以了,即使凭语感也可以作对题.
过去时只是表示过去做过,对现在未必产生影响,是在过去的时间点或时间段所做的事.
现在完成时是指过去开始做,并持续到现在已经做完了,对现在产生了影响.
过去完成时是在过去时做了一件事,持续到过去就已经做完了,对过去产生了影响,对现在也未必有影响.
如果说时间是一个数轴,那么过去完成时就是把现在完成时所占的位置往左推了一格,把现在时变成了过去时.
区分的话,如果句只有一个ago,用过去时,它是过去时的标志.
since一样是完成时的标志,包括现在完成时和过去完成时.
但是since后面是过去时前面要用过去完成时,因为since以及后面是做时间状语,是“自从过去……”的意思,从过去开始到过去完成了所以是前面用过去完成时.例如本句,自从她过去是个女孩开始,整体表示一个时间,就是时间状语.
since后加过去时的话包括出现ago,前面还是要用完成时,因为也表示自从过去多久之前,一样是自从……开始,比如It had been a long time since I first saw you three years ago.
自从我三年前第一次见你已经很长时间了.
各举一例：I went to Beijing two years ago.我两年前去了北京.
I have been to Beijing.我去过北京.
He said he had been to Beijing.他过去说他曾经去过北京.

it had been a long time ,since sb was a girl.这个过去完成式,had bee it's been a long time since I------.How are you?A.had last s 英语翻译It had been a long time since i would written anything b 关于完成式和过去式It's been a long time since I've seen it.It's been It --- five years since he left for Beijing. A.was B.had bee It was a long time ____ we had had a wonderful time together It's been so long since I had been a teacher.请问这句好如何翻译? It's a long time since还是It has been a long time since It ___ five years since he left for Beijing.A.was B.had been It had been very long time ,since i wrote last diary.because 英语翻译they had been going out for a long time 改倒装句1.It was the first time that a story had been so popular