什么是主语.谓语,宾语,定语,状语和它们的用法

主语：一个句子的发生动作的主体
谓语：一般是动词充当
宾语；表示动作发生的对象
定语：一般是形容词充当 修饰主语和宾语
状语：表时间、地点、状态、方位等等的限制补充的成分
补语：补充说明宾语的

表语从句就是用一个句子作为表语。
The problem is puzzling.
主语 连系动词 形容词作表语
The problem is when we can get a pay rise.
主语 连系动词 一个句子作表语---表语从句
B 连接表语从句的连接词有：that, what, who, when, where, which, why,
whether,how.
He has become a teacher.
He has become what he wanted to be ten years ago.
She has remained there for an hour.
She has remained where I stood yesterday for an hour.
His suggestion is good.
His suggestion is that we should stay calm.
The question is confusing.
The question is when he can arrive at the hotel.
who will travel with me to Beijing tomorrow.
why he cried yesterday.
how I can persuade her to join us in the party.
whether the enemy is marching towards us.
二 注意：
A 表语从句一定要用陈述语序。
False: The question is when can h