专题 15 高考英语语法【名词性从句】核心考点聚焦 -【口袋书】2021年高考英语必背手册

【口袋书】2021年高考英语必背手册 专题十五 名词性从句 名词性从句的句法功能相当于名词词组，在句中充当主语、宾语、表语、同位语、介词宾语等。因此名词性从句又分为主语从句、宾语从句、表语从句和同位语从句。 考点一 名词性从句的引导词 类别 功 能 引 导 词 从属连词 只起连接作用，不充当句子成分 that, whether, if 连接代词 起连接作用，并充当主语、宾语、表语或定语 who, whom, whose, which, what, whatever, whichever, whoever 连接副词 起连接作用，并充当从句状语 when, where, how, why 考点二　主语从句 1.主语从句的一般结构 主语从句＋谓语动词＋其他 How the book will sell depends on its author. 这本书销路如何取决于作者本人。 That he is the best student in the class is obvious. 他是班上最好的学生是显而易见的。 2.that引导的主语从句 that引导主语从句时，在从句中不作任何成分，也没有词汇意义，但一般不可省略。 That the earth goes around the sun is known to us all. 众所周知，地球围着太阳转。 that引导主语从句时，可用it作形式主语，that不可省略。常见句式主要有以下几种： ①It＋be/becomes/became＋形容词／名词／过去分词＋that从句 It became clear that Mary did make a mistake. 很明显，玛丽确实犯了一个错误。 It is cheerful that the local authorities have promised them to shorten the time of obtaining it. 令人高兴的是，地方当局已答应他们缩短获得它的时间。 ②It＋be＋名词(短语)(a pity/a shame/no wonder/no surprise等)＋that从句 His favorite food is fried snacks and soft drinks. It is no surprise that losing weight is just his dream. 他最喜欢的食物是油炸类小吃和软饮料。减肥只是他的梦想一点都不令人吃惊。 ③It＋be＋过去分词(said/told/reported/expected等)＋that从句 It is expected that small automated buses could make a difference when present human-operated transport has proved inefficient. 人们预测，当现有的人力交通运输系统被证明效率低下时，小型自动巴士可能会产生影响。 ④It＋不及物动词(seem, appear, happen,occurred to,matter等)＋that从句 It happens that he can understand a little about the language. 碰巧他能懂一点这种语言。 It occurred to him that he had an important conference to attend the next morning. 他突然想到，第二天上午他有重要的会议要参加。 ⑤It remains to be+过去分词＋主语从句 It remains to be seen who will be the victor in the contest. 谁将在这场比赛中获胜还有待分晓。 3.在“It is necessary /important / natural /strange等＋that 从句”和“It＋be＋suggested/advised/ordered/requested/proposed/insisted/required...＋that从句”结构中，用来表示惊奇、怀疑、惋惜、理应如此等语气时，主语从句谓语应用“(should＋)动词原形”。　 It is necessary that one(should)obey the law. 一个人必须遵守法律。 It is suggested that you (should) attend the opening ceremony. 有人建议你参加开幕式。 It seems strange that he sho