大学英语四级语法部分虽不单独设题，但贯穿于听、读、写、译各题型中。扎实的语法基础，是达成全方位突破的首要条件。新东方在线整理了2025年12月英语四级语法解析：表语从句，供各位考生参考。
2025年12月英语四级语法解析：表语从句
表语从句放在连系动词之后，充当复合句中的表语。
A 可接表语从句的连系动词
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 remains25 whether they will be able to help us.
问题还是他们能否帮大家。
At that time, it seemed as if I couldnt think of the right word anyhow.
当时，我好像如何也想不出一个适合的字眼来。
B as, as if / though引导的表语从句
He looked just as he had looked ten years before.
他看着还与十年前一样。
It sounds as if someone is knocking at the door.
听起来仿佛有人在敲门。
C because, why引导的表语从句
Thats because he didnt understand me.
那是由于他没理解我。
Thats why he got angry with me.
那正是他对我生气是什么原因。
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缘由时要用that引导，不适合用because。
The reason why I was sad was that he didnt understand me.
我难过是什么原因他没理解我。
D 用虚拟语气的表语从句
在表示建议、劝告、命令含义的名词后的表语从句，谓语动词需用"should+动词原形"表示，should可省略。容易见到的词有：advice, suggestion, order, proposal26, plan, idea等。
My suggestion is that we start early tomorrow.
我的建议是大家明天一早就出发。
His proposal was that they challenge27 the other classes to a friendly competition.
他的建议是挑战别的班级进行一场友谊竞赛。
以上就是新东方在线大学英语四级频道为大伙收拾的“2025年12月英语四级语法解析：表语从句”，期望大伙可以更好的学会大学英语四级语法攻略，提升大学英语四级水平。
