高中英语,itwas...that...的强调句的用法?时态不用改变什

发布网友发布时间：2024-10-07 06:00

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热心网友时间：2024-11-20 00:36

强调句型是英语中关键句式之一，其基本结构为 "It is/was + 被强调部分 + that/who + 句子其他部分"。通过此句型，可突出句子中的主语、宾语、状语等成分。例如，原始句子 "Jane saw him in the street last night" 可强调主语，变为 "It was Jane who saw him in the street last night"。同样，强调宾语、地点状语、时间状语的句子同样遵循此规律。

在复习强调句型时，需注意几个要点：一、强调句型中的主谓一致。无论强调主语是单数还是复数，主句中的谓语动词均用单数形式 "It is/was..."，且从句谓语与主语人称和数一致。例如："It is my parents that/who often help me get out of trouble." 或 "It is not I that/who am to blame for it." 二、强调句型中的 "be" 动词仅限于 "is" 或 "was"。根据原句时态决定，例如："It was last night that Jane saw him in the street." 三、对地点状语、时间状语或状语从句强调时，只能使用连接词 "that"，不可用 "when"、"where"、"why" 或 "how" 等。

强调句型的疑问形式，无论强调何成分，一般疑问句需将主句改换语序，原句为 "Is/was it that + 其他成分？" 或 "疑问词 + is/was it that + 其他成分？"，如："Was it her failing her exam that made her parents unhappy？" 或 "When was it that she changed her mind？"

对于 "not until" 结构中强调时间状语的句子，需将 "not" 移至 "until" 前，形成 "It is/was not until...that..." 的固定句式，如："I didn’t realize she was a famous film star until she took off her dark glasses。→It was not until she took off her dark glasses that I realized she was a famous film star。"

强调句型中，特殊疑问词引导的强调结构若用作宾语从句，应保持陈述语序，而非疑问语序，如："He asked me who it was that took his umbrella by mistake。" 或 "I wonder when it is that we’ll leave for Hongkong。"

强调句型的反意疑问句需与主句 "It is/was..." 保持一致，例如："It is Mary not you who wants to ask me about it, isn't it？" 或 "It was his coming that made you all very happy, wasn't it？"

有时，强调句型与定语从句相结合，使句子结构更加复杂。分析时，需从语法角度出发，理清句子结构。例如："It was on the farm where we worked that I got to know her。"

最后，强调句型与时间状语从句的区别在于，强调句型中的时间状语强调后，原句仍成立；而时间状语从句中去掉 "it is/was" 和连接词 "when/ before"，原句则不成立。例如："It was at 14:28 that the terrible earthquake broke out。"（强调句型）与 "It was 14:28 when the terrible earthquake broke out。"（时间状语从句）的区别。