璞璞小熊娃
表语从句简单的理解就是用一个句子来代替表语的位置故而称为表语从句，多存在于主系表这样的结构中。它的连接词指的就是在从句之前用来连接主句和从句的词，可以是that、whether、if等，也可以是连接代词who、whom、whose等，还可以是连接副词when、where、why等。
qian520xing
表语从句定义：在一个复合句中，从句作的是主句的表语成分。AThe problem is puzzling.这个问题令人困惑。主语+连系动词+形容词作表语The problem is when we can get a pay rise.问题是什么时候我们可以得到加薪。主语+连系动词+句子作表语（表语从句）B连接表语从句的连接词有：tha
夹心大便
顺手采纳答案表语从句（Predicative Clause）就是用一个句子作为表语。说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当表语一、表语从句的定义：表语从句放在连系动词之后,充当复合句中的表语.二、表语从句的构成：关联词+简单句三、引导表语从句的关联词的种类：1.可接表语从句的连系动词有be,look,seem,sound,appear等.China is no longer what she used to be.今日的中国不再是过去的中国了.The question remains whether they will be able to help us.问题还是他们能否帮我们.At that time,it seemed as if I couldn't think of the right word.当时,我似乎怎么也想不出一个恰当的字眼来.2.从属连词whether,as,as if / though引导的表语从句.He looked just as he had looked ten years before.他看起来还与十年前一样.It sounds as if someone is knocking at the door.听起来好像有人在敲门.3.because,why引导的表语从句.That's because he didn't understand me.那是因为他没有理解我.（That's because…强调原因）That's why he got angry with me.那正是他对我生气的原因.（That's why…强调结果）what引导的主语从句表示结果或名词reason作主语时,后面的表语从句表示原因时要用that引导,不宜用because.
