not until-2025-2026学年八年级英语下册句型辨析（北师大版）

初二下册北师大版 【句型辨析】 not.until.结构精讲 北师大版 【句型辨析】not.until..结构精讲 初中英语·北师大版初二下册 句型辨析精讲 辨析一not.ntil.vs not..before.. 维度 not...until... not...before.. 核心含义直到…才（强调动作在某 在…之前不（强调动作在 时间点后发生) 某时间前未发生) 时间逻辑 主句动作发生在until从句时 主句动作在before从句时间 间之后 前未发生，之后可能发生也可 能不明确 时态搭配 常与瞬间动词连用（如start, 可与完成时连用（如have leave),主过从过 done),强调“在某时前从未 …” 例句对比 He didn't go to bed until his mother came back,(母亲回来后才睡，强调时间点) I had never seen the film before last night.(昨晚前没看过，不强调之后是否看) 真题链接（北师大版初二下册期中真题） -When did you finish your homework? I finish it my father helped me. A.didn't;until B.don't;before C.won't;after 答案：A解析：句中“完成作业”是过去动作，排除B、C:强调“直到爸爸帮忙才完成”，用 not..until..,选A。 初二下册北师大版 【句型辨析】 not.until.结构精讲 辨析二not.ntil..vs until 维度 not...until... until 否定关系 必须与否定词not连用（双重 可用于肯定句，表动作持续到 否定表肯定) 某时 动词类型 搭配瞬间动词（动作开始于 搭配延续性动词（动作持续 until时间点) 至until时间点) 例句对比 She didn't arrive until9o'clock.(arrive是瞬间动词，9点才到) le waited until9o'clock.(wait是延续性动词，一直等到9点) 真题链接（北师大版初二下册同步练习） My brother TV his homework is finished every evening. A.watches;until B.doesn't watch;until C.watched;until 答案：B解析：“看电视”是瞬间开始的动作，需用not.until.;every evening提示一般现在时， 排除C,选B。 辨析三not.ntil.vs not..til 维度 not...until... not...till 使用场景 正式书面语，可用于句首引导口语或非正式语境，不可用于 时间状语从句 句首 标点规则从句置于句首时，需加逗号分 无论位置均无需逗号 隔 例句对比 Until he apologized,she refused to talk to him.(正式，句首用until) She didn't leave till the rain stopped..(口语，till不可放句首) 真题链接（北师大版初二下册月考真题） 初二下册北师大版 【句型辨析】 not.ntil..结构精讲 the teacher came in,the students were talking loudly. A.Until B.Till C.When 答案：A解析：句首需用until,till不可置于句首，排除B:when表“当…时”与句意不符，选 A。 辨析四not.ntil.vs not..unless 维度 not...until... not...unless 条件性质强调时间条件(“直到某时 强调假设条件(“除非…否 才”) 则不”) 逻辑关系 时间先后：先发生until从句条件限制：满足unless从句条 动作，再发生主句动作 件，主句动作才发生 例句对比 Iwon't go out until the rain stops..(等雨停这个时间点到了才出去) Iwon't go out unless you go with me.(除非你陪我，否则不出去) 真题链接（北师大版初二下册期末真题） You_pass the exam you study hard. A.don't;until B.won't;unless C.didn't;till 答案：B解析：“通过考试”的条件是“努力学习”，表假设用unless:until表时间，与句意不符， 选B。 综合训练 单项选择 1.He go to bed he finished his homework last night. A.didn't;until 3 初二下册北师大版 【句型辨析】not.ntil..结构精讲 B.doesn't;before C.won't;after 2.the bell rang,the students stopped talking. A.Until B.Till C.When 3.Youget the giftyou finish the task on time. A.don't;until B.won't;unless C.didn't;till 二、选短语填空/完成句子 从not.until../not.before../until/unless中选择合适的短语完成句子 1.Shearrive8 o'clock this morning.We were worried about her. 2.I seen such a beautiful sunsetyesterday. 3.They will wait you come back.Don't hurry. 4.You can't watch TV you finish your homework. 三、句型转换 l.He finished his work after his father came back.(用not.ntil.改写) 2.I had never been to Beijing before2023.(用not.before..保持句意不变) 3.She didn't leave.The rain stopped.(合并为一句，用not.until..) I单项选择 1.A2.A3.B Ⅱ.选短语填空/完成句子 1.didn't;until 2.had never;before 3.until 4.unless I.句型转换 1.He didn't finish his work until his father came back. 4 初二下册北师大版 【句型辨析】not.ntil..结构精讲 2.I hadn't been to Beijing before 2023 3.She didn't leave until the rain stopped. 5