Her parents work very late very night ,sometime ______ 2a.m.A.till B.until C.A and B
问题描述：
Her parents work very late very night ,sometime ______ 2a.m.A.till B.until C.A and B
答
C这两个词意思一样,都表示"直到某时".until是till的强调形式.不过,当主句是否定句时,它引出的意思是"直到（某时）（某动作）才（发生）" ,这时候常会出现"not until …"的结构,如果将 "not until …"的结构放在句首,...