[考题6] He was told that it would be at least three more months ____ he could recover and return to work.
A. when B. before C. since D. that
[答案] B
[解析] 表示他康复并返回工作岗位之前至少还需要三个月,下划线处应选用before。
[考题7] It was some time ____ we realized the truth.
A. when B. until C. since D. before
[答案] D
[解析] 题干意为:过了一段时间我们才意识到真相。下划线处应填入表示在之前的连词。
3. till和 until 引导的时间状语从句分析:
till和 until这两个词作连词和介词时的意义和用法相同,一般可以换用(放在句首时通常用until的形式,till在口语中更为常见)。till和 until引导时间状语从句时跟主句里肯定形式或否定形式的、表示延续性动作的谓语动词连用表示到为止,跟主句里否定形式的、表示非延续性动作的谓语动词连用表示直到才(开始),例如:Walk till you come to a white house. 一直走到一座白房子为止。// We didnt discuss the problem until he came back. 我们一直等到他回来后才讨论问题。
[考题8] It is difficult for us to learn a lesson in life ____ weve actually had that lesson.
A. until B. after C. since D. when
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