英语从句语法PPT
英语从句可以分为名词性从句、定语性从句和状语性从句三大类。下面我将分别对这三大类从句进行详细讲解，并配以例句说明。名词性从句名词性从句在句子中起到名词的作...
英语从句可以分为名词性从句、定语性从句和状语性从句三大类。下面我将分别对这三大类从句进行详细讲解，并配以例句说明。名词性从句名词性从句在句子中起到名词的作用，可以是主语、宾语、表语等。根据从句的语法功能，名词性从句可以分为以下几种：1. 主语从句主语从句通常位于句子的开头，作为主句的主语。引导主语从句的有that、what、who、which等。例句：That she is a doctor is known to allWhat she wants is a bookWho will win the game is still unknownWhich team will be chosen is not important2. 宾语从句宾语从句通常位于动词或介词的后面，作为宾语。引导宾语从句的有that、what、who、which等。例句：I believe that she is honestThey knew what he had doneHe asked who was thereShe doesn't know which way to choose3. 表语从句表语从句通常位于系动词的后面，作为表语。引导表语从句的有that、what、who、which等。例句：The problem is that we have no moneyMy opinion is what he is not suitable for the jobTheir decision was who would go to the conferenceThis is which way we should go4. 同位语从句同位语从句通常位于名词的后面，对该名词进行补充说明。引导同位语从句的有that、what、who等。例句：The news that she had won the prize was trueI have no idea what he is doing nowWe don't know who the winner will be定语性从句定语性从句在句子中起到形容词的作用，用于修饰名词或代词。定语性从句也叫做形容词性从句，可以分为限制性定语从句和非限制性定语从句两种。1. 限制性定语从句限制性定语从句与先行词有着不可分割的关系，缺少它句子意思就不完整。引导限制性定语从句的有that、which、who、whom等。例句：The car that I drive is red.（先行词是the carthat作为drive的宾语）The book which he recommended was very interesting.（先行词是the bookwhich作为recommended的宾语）The person who/whom I saw yesterday was her boss.（先行词是the personwho/whom作为saw的宾语）2. 非限制性定语从句非限制性定语从句与先行词的关系不紧密，它只是对先行词进行附加说明。引导非限制性定语从句的有that、which、as等。非限制性定语从句不能用that引导，除非前面有逗号。例句：His motherwho/whom he loved very much, died in a car accident.（先行词是his mother，who/whom作为loved的宾语）这里可以用逗号+who/whom的形式，表示与主句关系不紧密。去掉非限制性定语从句不影响主句的意思。非限制性定语从句也可以用as引导，表示“正如”。）如：As is well-known, the earth is round.（众所周知，地球是圆的。）"As is well-known"是非限制性定语从句，去掉它并不影响主句的意思。因此，"the earth is round"与"As is well-known"是两个独立的句子，只是用逗号隔开。非限制性定语从句还可以用which引导，表示“这一点”。如：He has a beautiful voice, which his mother has never had.（他有一副好嗓子，这是他母亲所没有的。）"which his mother has never had"是非限制性定语从句，去掉它并不影响主句的意思。）去掉非限制性定语从句不影响主句的意思。因此，"He has a beautiful voice"与"which his mother has never had"是两个独立的句子，只是用逗号隔开。非限制性定语从句还可以用which引导，表示“
