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1、一 短语before long与long before的区别 before long“很快,不久”的意思,可以用于各种时态.Before long,he went to America.不久,他就去了美国.I hope to see you before long.我希望不久后再见到你.而 long before是“很久以前”的意思,一般用在过去时或过去完成时的句子里.She said she had read the novel long before.她说她很久以前就读过这部小说.That happened long before.那件事发生在很久以前,二 before long 和soo
2、n after的区别一、before long的用法 意为“不久之后”、“很快”(soon)，用于各种时态.是词组表示时间,单独用.位于句首或句尾。Ill be back before long.不久我就回来。Before long he got married.不久他就结婚了。Soon after 不久之后,稍后,after是连词,后面跟一个句子.1.Soon after we were seated,a waiter came over to our table witha smile.2.The book was published soon after it was written.,
3、难点 long before有两个用法：(1)单独使用，before是介词，词组表示时间 She had left long before.That had happened long before.注：long ago“很久以前”，指的是从现在算起的以前，通常与一般过去时连用：I met him long ago.我很久以前就认识他了。,（2）long before后接从句时，before是连词。一 时间状语从句，在的很久以前 She had left long before he returned.He had worked in the factory long before he got married.二 It is/was.long before肯定句：过了多久才.（时间长）否定句：没过多久就.（时间短）It was long before class is over.It wont be long before class begins.It wast long before I learnt the papercut.,共同点Before long he went to Paris.不久他就去了巴黎。It wasnt long before he went to Paris.不久他就去了巴黎。,
