A. Not until dark B. It was until dark that C. It was not until dark that D. It was dark that (答案C) 注意:如果not...until放在句首时就要用部分倒装句式,它的语序和在not...until结构中由until引导的短语(或从句)表示时间状语的句型中的语序不同。 6. 强调词i...