2024届高考英语语法复习：名词性从句课件

名词性从句 名词性从句 名词性从句是在句子中起名词作用的句子，功能相当于名词词组，它在复合句中可作主语、宾语、表语和同位语，因此名词性从句又可分为： 主语从句 宾语从句 表语从句 同位语从句 主语从句 主语从句即在整个句子中充当主语的句子。 That he finished writing the composition in such a short time surprised us . It was clear that that crime was done deliberately. Why he left so abruptly is not known to any of us. How the book will sell depends on its author. Whether she comes or not doesn't concern me. Wherever he once lived is well preserved. 主语从句 主语从句大多数情况下视为第三人称单数，但也有例外。由what引导的主语从句视情况而定 That price will go up is certain. Whether we will go for an outing tomorrow remains unknown. What caused the accident remains unknown. What we need are good doctors.   主语从句 主语从句放在句首表示“是否”时，只能用 whether，不能用 if If Mary really heard him is really doubtful.（×） Whether Mary really heard him is really doubtful.（√） 主语从句 为了防止句子头重脚轻，通常把形式主语it放在句首，真正主语放在句末 That he will win the match is certain. → It is certain that he will win the match. That he has made a very important discovery in chemistry is true → It is true that he has made a very important discovery in chemistry. What caused the accident is still a mystery. → It is still a mystery what caused the accident. 主语从句不可位于句首的五种情况 1. If引导的主语从句 It is uncertain if he will leave for Beijing tomorrow. （√） If he will leave for Beijing tomorrow is uncertain. （×） 2. It is said / reported/ believed (that)…结构中的主语从句 It is said that President will visit our school next week. （√） That President will visit our school next week is said. （×） 主语从句不可位于句首的五种情况 3. It happens / occurs… 结构中的主语从句 It occurred to him that he failed in the examination.（√） That he failed in the examination occurred to him. （×） 4. It doesn’t matter how/whether… 结构中的主语从句 It doesn’t matter whether he is wrong or not. （√） Whether he is wrong or not doesn’t matter. （×） 主语从句不可位于句首的五种情况 5.含主语从句的复合句是疑问句时,主语从句不可提前 Is it likely that it will rain in the evening?（√） Is that will rain in the evening likely? （×） 宾语从句 I think (that) you should tell the truth. I can't imagine what made him act like that. Can