Which of the following is NOT a compound word?A.Pencilbox.B.Unreasonable.C.Deadline.D.Upst

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Which of the following is NOT a compound word?

A.Pencilbox.

B.Unreasonable.

C.Deadline.

D.Upstairs.

请帮忙给出正确答案和分析,谢谢!

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答案解析

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  • 正确答案:B
    考查词汇学。首先要明确定义,复合词是将两个或者两个以上的自由词素按照一定的次序排列构成的新词。(Acompoundwordisonethatismadeupofdifferentclassesoffreemorphemes.)选项中unreasonable不是由词素构成的,而是通过加上前缀an和后缀able构成的,这种词叫派生词(derivativeword).