句型全解03-2025-2026学年高中英语必修一句型全解（外研版）

高中必修第一册外研版 【核心句型精讲】A版句型全解 核心句型 【A版句型全解】Itis.to imagine...without... 高中·外研版·必修第一册 基本结构 句型结构：Itis+形容词+to imagine+what引导的宾语从句 It为形式主语，真正主语是后置的不定式短语to imagine.;what引导的从句作imagine的宾 语，其中”would be like'”表示对事物特征或状态的推测。 例句展示： It is difficult to imagine what life would be like without electricity. It is amazing to imagine what our city will look like in 50 years. 句型精讲（核心考法） 考法1：宾语从句的连接词辨析 判断规侧+例句对比 规则：在Itis+adj.+to imagine+宾语从句”结构中，宾语从句需用陈述语序；根据句意选 择连接词（如what表”什么”，how表”如何”，where表哪里”等），原句中what在从句中作介词 lke的宾语。 1:It is hard to imagine what our future will be like 例句2：It is difficult to imagine how they finished the task in2 hours.. 真题再现(2024外研版必修第一册单元测试) It is hard to imaginethe world would be like without electricity A.how B.what C.where 1 高中必修第一册外研版 【核心句型精讲】A版句型全解 D.when 答案：B 解析：宾语从句中like缺少宾语，应用what表示”什么样子”，how作状语不接ike,故选 B。 真题再现(2023山东济南高一期末) It is impossible to imaginelife will change in the next 50 years. A.what B.how C.that D.why 答案：B 解析：从句中'life will change'”主谓完整，需用how表方式”如何变化”，what需作成分，此 处不适用，故选B。 考法2：虚拟语气在宾语从句中的应用 判断规侧+例句对比 规则：在Itis+adj.(hard/difficult/.impossible))+to imagine+宾语从句’结构中，若从句描述 与现在/将来事实相反的假设，谓语动词用”would+动词原形'：与过去事实相反用'would have done”。原句中”would be”表示对现在事实的假设(”如果没有自然的力量，地球现在会是什么样子)。 1:It is hard to imagine what our city would look like if we didn't protect the environment. 2:It is sad to imagine how many lives would have been saved if the hospital had more beds. 真题再现(2024外研版必修第一册期中测试) It is hard to imagine what the internet like today without the invention of computers. A.is B.was C.would be D.willbe 答案：C 2 高中必修第一册外研版 【核心句型精讲】A版句型全解 解析：从句表示”如果没有计算机发明，现在互联网会是什么样子”，与现在事实相反，用 would be,故选C。 真题再现(2023北京朝阳高一月考) It is impossible to imagine how I the exam last week without your help A.would pass B.passed C.would have passed D.had passed 答案：C 解析：从句描述”上周没有你的帮助，我本不可能通过考试”，与过去事实相反，用would have passed,故选C。 考法3：句型的同义句转换（不定式作主语） 转换规则+例句转换 规则：去掉形式主语It,将不定式短语”to imagine.”置于句首作主语，谓语动词用单数，结 构为To imagine+宾语从句+is+adj.” It is hard to imagine what our planet would be like without the power of nature. 同义句：To imagine what our planet would be like without the power of nature is hard. 真题再现(2024外研版必修第一册同步练习) It is interesting to imagine what life on Mars will be like.(改为同义句) what life on Mars will be like is interesting. 答案：To imagine 解析：去掉形式主语It,将不定式短语To imagine.”置于句首作主语，故填To imagine。 真题再现(2023江苏南京高一期末) It is important to imagine how technology will shape our future.(改为同义句) how technology will shape our future is important. 答案：To imagine 3 高中必修第一册外研版 【核心句型精讲】A版句型全解 解析：遵循不定式作主语的转换规则，将'to imagine”提前，故填To imagine. 考法4：介词without的用法及替换 判断规则+例句对比 规则：介词without表示”没有”，后接名词/代词/动名词；可替换为”if there were no..”(虚拟 条件句)或'in the absence of.”(正式用语)。原句中”without the power of nature'”可替换为”if there were no power of nature". 例句l:It is hard to work without a computer.. 例句2：It is hard to imagine life if there were no water.. 真题再现(2024外研版必修第一册模块测试) It is hard to imagine lifeair. A.with B.without C.for D.from 答案：B 解析：根据句意”没有空气很难想象生命”，without表”没有”，故选B。 真题再现(2023浙江杭州高一期末) It is impossible to finish the project on time_their support..（用without或if从句改写) 答案：without或if we didn't have 解析：”without their support'表”没有他们的支持”，也可用虚拟条件句'if we didn't have their support'替换，此处需填介词，故填without,. 句型综合训练 训练1：单项选择（考察宾语从句连接词辨析） 高中必修第一册外研版 【核心句型精讲】A版句型全解 1.It is hard to imagine_our school will be like in 10 years. A.how B.what C.where D.when 2.It is difficult to imagine they solved the problem so quickly. A.what B.how C.that D.why 3.It is impossible to imaginewe will live without clean water. A.where B.when C.how D.what 4.It is interesting to imagine life on the moon would be like. A.what B.how C.why D.which 5.It is sad to imaginehappened to the lost pet. A.how B.what C.where D.when 训练2：同义句转换（考察不定式作主语转换） 1.It is easy to learn English with a good method. English with a good method is easy. 2.It is fun to play games with friends after school. -games with friends after school is fun. 3.It is important to read books every day. books every day is important. 4.It is helpful to take notes in class 5 高中必修第一册外研版 【核心句型精讲】A版句型全解 -notes in class is helpful. 5.It is necessary to finish homework on time. homework on time is necessary. 训练3：完成句子（考察虚拟语气及without用法） 1.很难想象没有电我们的生活会是什么样子。 -It is hard to imagine what our lifewithout electricity. 2.没有你的帮助，我不可能完成这项工作。 I couldn't finish the work help. 3.如果没有空气，人类就无法生存。 -It is impossible for humans to liveair. 4.很难想象如果没有互联网，我们现在会如何交流。 -It is hard to imagine how wenow without the Internet 5.没有阳光，植物就不能生长。 Plants can't grow_sunlight 训练4：写作高级句式（考察核心句型翻译) 1.很难想象未来的城市会是什么样子。 -It is hard to imagine future cities_ 2.没有朋友，生活将会很孤独。 -It is lonely to imagine life friends. 3.学会独立思考对我们来说很重要。 _independently is important for us. 参考答案 I.训练1：单项选择 1.B2.B3.C4.A5.B Ⅱ.训练2：同义句转换 1.To learn 2.To play 3.To read 4.To take 5.To finish L.训练3：完成句子 6 高中必修第一册外研版 【核心句型精讲】A版句型全解 1.would be 2.without your 3.without 4.would communicate 5.without V.训练4：写作高级句式 1.what,would be 2.without 3.To think 7