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1、名词性从句名词性从句主语从句宾语从句表语从句同位语从句主从复合句主语从句可以前置，也可以后置。用it做形式主语，而把主语从句，在句末，常用下面几种句型。1.It+be+表语 +主语从句表语：（名词，形容词，过去分词）位置位置It is said that Mr.Green has arrived in Beijing.It is reported that China has sent another manmade earth satellite into orbit.2.It+不及物动词+主语从句It seemed(happened,doesnt matter,has turned out
2、)that It happens that they were absent.It seems that Alice is not coming to the party at all.It doesnt matter whether she will come or not.3.It+及物动词（被动语态）+主语从句It has been decided that the exhibition will not open on Sundays.1）主语从句在句首时，必须由连接词引导，不能省略这些连接词；但是如果用it做形式主语，而把主语从句放在句末时，从属连词that可以省略。误：They s
3、hould like each other is natural.正：That they should like each other is natural.正：It is natural that they should like each other.2)如果主语从句放在句首，不能用if引导，但是如果用it 做形式主语，而把主语从句放在句末时，也可以用if引导.误：If Mary really heard him is really doubtful.正：It was doubtful if Mary really heard him.(1)主语从句中用陈述语序What she is afraid of is their taking her to Paris.(What is she afraid of Wrong)(2)主语从句后谓语动词用第三人称单数That they havent phoned is strange.(3)that引导的主语从句中，that不可被省略That price will go up is certain.主语从句需注意的问题总结:CET-4翻译题北京知金大鹏教育科技有限公司|DAPENGJIAOYU.COM主语从句位置1形式主语的主从2Thank you!Thank you!