主语从句

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主语从句（Subject Clause）

关联词有从属连词that、疑问代词 what、疑问副词、缩合连接代词、缩合连接副词等。？？

简单句 The fact is obvious

主语从句

That the rabbit eat a carrot

is obvious 形容词

Is a secret 名词

Was discussed 被动态

happened 动词

Who eat the carrot is obvious

What the rabbit eat is obvious

that the rabbit eat the carrot is obvious ?？

Whether the rabbit eat the carrot is obvious  ?？

When the rabbit eat the carrot is obvious

Where the rabbit eat the carrot is obvious

How the rabbit eat the carrot is obvious

为什么没why？？

改成形式主语,it 指向长从句主语

it is obvious that the rabbit eat the carrot 形容词

it Is a secret that the rabbit eat the carrot名词

It Was discussed that the rabbit eat the carrot被动态

It happened that the rabbit eat the carrot动词

it is obvious Who eat the carrot

it is obvious What the rabbit eat

it is obvious that the rabbit eat the carrot

it is obvious Whether the rabbit eat the carrot

it is obvious When the rabbit eat the carrot

it is obvious Where the rabbit eat the carrot

it is obvious How the rabbit eat the carrot

虚拟语气中，被要求建议，道德绑架

that you should eat a carrot is suggested

It is suggested that you should eat a carrot

Suggest demand insist order

Important essential necessary

需要虚拟语气