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课件网) 高三英语二轮复习名词性从句 (一)that引导的主语从句 1.that引导主语从句时，在从句中不作任何成分，也没有意义，但一般 不可省略。 That the earth goes around the sun is known to us all. 众所周知，地球绕着太阳转。 That the heavy haze is doing harm to our health is quite apparent.很 明显，雾霾正在危害我们的健康。 2.that引导主语从句时，可用it作形式主语，把that引导的主语从句后置， that不可省略。常见句式主要有以下几种： ①It＋be＋形容词(necessary, right, likely, unlikely, wrong, important, certain, clear, obvious, strange, normal等)＋that从句 It is unlikely that I should accept such an offer as that.我不可能接 受像那样的帮助。 It is certain that he will pass the driving test. 他会通过驾驶考试，这是非常有把握的。 ②It＋be＋名词(短语)(a pity, a shame, good news, a fact, an honour, a wonder, no wonder等)＋that从句 It's no wonder that he didn't want to go. 难怪他不想去。 It is a pity that you missed such a good chance. 你错过了这么好的机会，真可惜。 ③It＋be＋过去分词(said, told, heard, reported, decided, suggested, advised, announced, remembered, thought, considered, well known, ordered等)＋that从句 It is decided that the meeting has been put off until next Monday.已 经确定了，会议推迟到下周一。 [名师指津] 在“It＋be＋suggested/advised/ordered/ requested/insisted/required…＋that从句”结构中，从句谓语应用 “(should)＋动词原形”。 To master English, it is suggested that you (should)practice with local people. 为了掌握英语，建议你和当地人一起练习。 ④It＋特殊动词或短语(seem, appear, happen, matter, turn out, occur to, make no difference等)＋that从句 It suddenly occurred to her that Joe was afraid of being alone.她突 然想到乔害怕独自一个人待着。 It seems that he is not satisfied with your behavior. 看来他对你的行为不太满意。 (二)whether与if引导的主语从句 whether与if引导主语从句时，在句中不作任何成分，但有具体的含义， 意为“是否”。 主语从句位于主句谓语动作前，表示“是否”，只能用whether。若用it作 形式主语，则whether与if可互换。 Whether they will put off the meeting hasn't been decided. 他们是否推迟会议还没有决定下来。 It's uncertain whether/if he'll come this evening. 他今天晚上是否会来还不确定。 (2020 江苏卷)It is not a problem whether we can win the battle; it's just a matter of time. 我们能赢得这场战斗毋庸置疑，只是时间问题。 (三)连接代词、连接副词引导的主语从句 1.连接代词包括who, what, which, whoever, whatever, whichever等。连 接代词在从句中既起连接作用，又充当主语、宾语、表语或定语成分。 Who broke the glass yesterday is not clear. 昨天是谁打破了玻璃杯还不清楚。 What Jones offers to her fans is honesty and happiness. 琼斯展现给她歌迷们的是诚实和快乐。 Whoever breaks the law should be punished. 任何人违反了法律都要受到惩罚。 2.连接副词包括when, where, why, how。连接副词在从句中作状语， 分别表示时间、地点、原因、方式。 Why the boy quit school is what his teacher wants to know.那个男 孩的老师想知道他为什么退学。 How life exists on the earth is one of the biggest puzzles to scientists.对科学家们来说 ... ...
