1、位于主句中的连系动词之后。英语句子三大分类：1.简单句 2.并列句 3.复合句简单句：S V =1 并列句：S V 2且由并列连词连接复合句：S V 2且由从属连词连接从属连词：that,which,what,when,where,why,how,whether,if,because,since,although,whatever,however.并列连词：并列连词主要是用来表示并列关系、转折关系、选择关系、因果推理关系等。and,but,or,so,both.and,as well as,neither.nor判断从句类型判断从句类型1.That he finished writing th
2、e composition in such a short time surprised us all.2.The question is when he can arrive at the hotel.3.He told that he would go to the college the next year.4.The girls were surprised at the fact that ocean ships can sail up the Great Lakes.1.构成：引导词构成：引导词+简单句简单句2.引导词：引导词：从属连词：从属连词：that,whether,as,a
3、s though,as if等。等。连接代词：连接代词：who,what,which等。等。连接副词：连接副词：when,where,how,why等。等。3.三个注意点：三个注意点：1)if 不引导表语从句不引导表语从句 2)主语为主语为reason时，引导词用时，引导词用that 3)语序语序 语法精讲一.什么是表语？表语是用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、_、_、_、不定式、动词的-ing、从句来充当，它常位于系动词（be,become,appear,seem,look,sound,feel,get,smell等词）之后。形容词副词介词短语1.Africa is
4、 a big continent.2.The patient is out of danger.3.The sun is up.4.The egg smells smelly.5.Her job is selling computers.6.The baby seems to be asleep.主语+系动词+表语二.表语从句概述用作表语的从句叫作表语从句，它位于主句中的连系动词之后。2.位置：系动词后3.引导词：4.语序：陈述句语序根据成分和意义确定原则：缺什么填什么；不缺填that 1.定义：充当表语的从句The question is who the man is.5.表语从句的构成：(
5、系动词)+引导词+简单句具体内容：1 1）that that 在引导表语从句时无词义，不能省略，而在引导表语从句时无词义，不能省略，而whetherwhether有词义，意为有词义，意为“是否是否”，表不确定语气。，表不确定语气。The trouble is that I have lost his money._ 三.引导表语从句的连词 麻烦的是我把他的钱丢了。My question is whether he left(or not)._我的问题是他是否离开了注：if 不能引导表语从句。2 2）由从属连词）由从属连词because,as if,as thoughbecause,as if,
6、as though等引导的等引导的表语从句。表语从句。Thats because we never thought of it.那是因为我们从来没有想起那个问题。It looked as if it was going to snow.看起来好像要下雪了。三.引导表语从句的连词3 3）由连接代词引导的表语从句。）由连接代词引导的表语从句。who,what,which,whom,whose,whatever,whoever,wwho,what,which,whom,whose,whatever,whoever,whomever,whicheverhomever,whichever等引导表语从句，
7、且在句子中做等引导表语从句，且在句子中做主语，宾语，表语时，连接代词不能省略。主语，宾语，表语时，连接代词不能省略。The question is which of us should go.问题是我们哪一个应该去。The problem was who could do the work.问题是谁能做这项工作。Thats what he is worrying about.那就是他在担心的事三.引导表语从句的连词4 4）由连接副词引导的表语从句。）由连接副词引导的表语从句。Go and get your coat.Its where you left it.去把你的外套拿来。That is
8、how mice ruin many stores of grain every year.那就是老鼠是怎样每年糟蹋大量粮食的。三.引导表语从句的连词that/what的区别1.The trouble is_we are short of tools.2.America was _was first called“India”by Columbus.thatwhat总结：表语从句中that和what的区别That在表语从句中，不充当句子成分，what除了充当引导词还在从句中充当一定的成分。即学即用 1.The question is_we will have our sports meet next week.2.The reason why he failed is_ he was too careless.3.The problem is _ we can get to take place of Ted.4.What I want to know is _ he likes the gift given by us.5.The reason is _ I missed the bus.whetherthatwhetherwhothat
