12.过去完成进行时:had been doing 表示从过去的过去开始,持续到过去的动作或情况,期间一直有规律的在进行、不曾间断,并且有可能会继续延续下去。此时经常用延续性动词。 例:The old cl...
It has been raining these days. 六、过去完成时 1.概念:以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”。 2.时间状语:before, by the end of last year(term, month…),by the time...,etc. 3.基本结构:had + done...
用相应的过去的某种时态(一般过去时,过去进行时,过去将来时,过去完成时)。 Michael said that he would try harder the next semester. Jennifer wondered who had taken her umbrella ...
连接词:when(当……时候) while(当……时候) as(当……时候) after(在……以后) before(在……以前) as soon as(一……就) since(自从……到现在) till /until(直到……才) by the time(到……为止)依旧是连接词后大多数加陈述语序。 举例:when当……的时候(一般情况...
28. By the end of last year , another new gymnasium had been completed in Beijing. 到去年年底为止,另一个体育馆已经在北京被建成了。 29. when and where to go for the on—sala...
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