18.We couldn't finish our work so early ________ your help.( 。
A.withoutB.withC.forD.by

分析 沒有你的幫助,我們無法這么早完成工作.

解答 答案:A.
結(jié)合前面一句的"We couldn't finish our work so early"可以推斷這句話表達的意思是"沒有你的幫助,我們無法這么早完成工作.",所以設(shè)空處應(yīng)選擇一個否定意義的方式介詞,結(jié)合選項 without 意為"沒有",表否定,符合句意,故選A

點評 英語介詞的一個特點是一詞多義,并且介詞間語義交叉現(xiàn)象很多,習慣用法也很多,有時很難從詞義上區(qū)分開來.故學(xué)習中要注意不斷總結(jié),熟記一些介詞和動詞的固定搭配用法及習慣用法,是完成此類問題的捷徑.

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