But I didn’t know that then, although I learned it later. 但我当时的确不知道此事,尽管后来我还是知道了。
此句既用了并列连词 but,又用了从属连词 although,但它并未造成错误,原因是此句与上面所讨论的情形有所不同,即此句 but 用于 although 之前,but 在此仅起到与上文转折的作用,but 后的 I didn’t know that then, although I learned it later. 仍为一个复合句。
I tried doing the accounts, but although I knew some maths I found it very difficult. 我试着算这些账,但尽管我懂点数学,仍感到很困难。
此句将 but 与 although 用在一起,但此句也没有错误。该句从总体来看,它是一个以并列连词 but 连接的并列句,而在该并列句的后面一句又是一个包含让步状语从句 although I knew some maths 的复合句——这种句型就是所谓的并列复合句。此句也可改写为 I tried doing the accounts, but I found it very difficult although I knew some maths.
5. When the last prize had been awarded _____ everybody cleared off.
A. and B. so
C. or D. 不填
【陷阱】容易想当然地误选A。
【分析】句首 when 引导的是一个时间状语从句,它暗示整个句子为复合句;而so, and, or 为并列连词,无论选哪一个,都表明整个句子为并列句,从而导致前后矛盾,所以A、B、C均不能选择。此题正确答案选D,everybody cleared off 为整个复合句的主句。请看类似例子:
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