名词性从句的种类：主语从句、宾语从句、表语从句、同位语从句 一、主语从句：从句充当主语， 1、 引导词：that whether if what who which whose whatever whoever when where why how。 2、 句子结构： 1） 引导词+主语从句+谓语 he will come to the conference has excite
d every one of us. she will join us does not matter too much. Ben offers to her friends is honesty and happiness. will be our new headteacher hasn’t decided yet. he became rich overnight is still a puzzle. was said here must be kept secret. leaves last should close all the windows. 2） It（形式主语）+谓语+引导词+主语从句 A） It+be+形容词/名词/过去分词主语从句 B） It+seems(ed)/happens(ed)+that It is not clear to me she likes the present. It is a pity you missed such a good lecture. It is reported many people still can not get enough food in that poo area. It seems he hasn’t known anything about that. It happened he went by that store.
二、宾语从句：充当宾语的从句。 1、引导词：that whether if what who which whose whatever whoever when where why how。 2、句子结构： A）主句+that 引导的宾语从句 They told us this would never happen. The teacher advised us we should pay more attention to our writing. B)主语+系动词+afraid/sorry/sure/glad/angry I am afraid you can’t take photos here. + that 引导的宾语从句 I am sure he will come tomorrow. I am sorry I have forgotten your birthday. C)主句+what/who/whom/whose/which/when We should respect food and think about the people who don’t have /where/houw/why 等从句 we have here and treat food nicely. Can you tell me dictionary it is? Excuse me ,could you tell me bus I shall take to the railway station? Do you know he is waiting for at the school gate? We haven’t discussed yet we are going to place our new furniture. Please remind me he said he was going.I may be in time to see him off. I don’t know he is so angry. D) 主句+whether/if 引导的宾语从句 Did he tell you whether /if he would come the next day? E)只用 whether，不用 if 的情况 介词/discuss+whether 引导的宾语从句 I am thinking of I am not interested in We discussed we should go fishing. she’ll come or not. we should have a sports metting the next week.
动词+ whether or not 引导的宾语从句 Whether 引导宾语从句+主句
There were times I wondered whether or not we would go there. I don’t know or not they will come to help us. this is true or not,I am not sure.
三、表语从句：在系动词后充当表语的从句。 1、引导词：that whether as if what who which whose whatever whoever when where why how。 2、句子结构： 主语+be/系动词+引导词+表语从句 That’s I want you to work here. The reason she called me is that she will not attend the party. It looks she has cried. The trouble is we are short of funds. That was we camped last night. 四、充当同位语的从句。 1、引导词：that（同位语从句中一般不省略） whether when where how。 2、句子结构 名词+引导词+同位语从句 The question should do the work requires consideration, He received the order he should come back by the noon. The fact some countries are still suffering from poverty is really a great problem to the world. 此处的名词为抽象名词：belief ,doubt, fact, hope, idea, information, news, order, possibility, promise, question, suggestion, truth, thought, decision, discovery, opinion, knowledge 等。
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