在句中一般作时间状语，可放在句首和句末，多用在一般将来时和过去式的句子中，意思是:“不久” 。If you say something happens before long， you mean it will happen soon or in the near future.
long before的用法应注意以下几点:单独使用，相当于一个副词，表示比过去某时早得多的时间，意为“老早”、“很久以前”“早就”等，通常与过去完成时连用。同义句比较:Before long he went to Paris.不久他就去了巴黎。
例:By the time the fire engines got there， the whole building was already alight. 等消防车到那里时，整栋大楼都已经燃着了。
初中英语2000个固定搭配（一）Aability to do sth 做某事的能力be able to do sth 能做某事What about ...? ……怎么样？How about ...? ……怎么样？
a[eijart一(个，件....) afforde':dv有足够的(钱/时间)做(某事)abit(of)phr少量(的)，一点 afraid[e'freid]adj害怕的abit[e'bit]phr.一点儿 Africa[afrika]n非洲a bottle of]phr.
a number of， the number of。cause 指造成某一事实或现象的直接原因，后接of sth./doing sth，reason用来解释某种现象或结果的理由，后接for sth./doing sth. the reason for being late。
今天在美国只剩下布灰熊了，它们中的大多数还生活在蒙大拿和怀俄明。The largest grizzly bears sometimes are as much as eight feet tall and weigh 1000 pounds， the average grizzly，though，weighs between 400 and 500 pounds.
以字母b开头的英文日常生活中使用频率较高的介词短语，以及它们的中英文对照、例句和例句的中文意思:1. by means of 通过，凭借例句:We were able to solve the problem by means of a new software program.
