It was some time _______ I realized the fact that I had been cheated by the salesman.
A.untilB.beforeC.unlessD.since
B

試題分析:連詞辨析。A直到…才;B在…前;C除非,如果…不;D自從;固定句式: It be 一段時(shí)間 before…一段時(shí)間以后某事才發(fā)生;如果before后面使用一般現(xiàn)在時(shí),前面的主語使用將來時(shí);如果before后面使用一般過去時(shí),前面也使用一般過去時(shí);句意:一段時(shí)間以后我才意識到我被這個(gè)銷售員給欺騙了。故B正確。
點(diǎn)評:連詞的詞義辨析要放在上下文的語境中進(jìn)行,要注意上下文的語義的串聯(lián)以及邏輯關(guān)系的推理,特別要注意一些連詞和時(shí)間狀語的固定搭配。
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