His parents are doctors.为什么谓语是are doctors 而不是are?为什么We study hard.的谓语却仅仅是study ,而不是study hard呢?

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His parents are doctors.为什么谓语是are doctors 而不是are?
为什么We study hard.的谓语却仅仅是study ,而不是study hard呢?

英语简单句的基本成分:主语+谓语
主语是句子谈论的主题
谓语是说明主语怎么样了
谓语一般都是句子中主语以后的部分
谓语中的动词叫做谓语动词
在第一句中:be动词are是位于中的谓语动词 are doctors 才是谓语
第二句中：主语是We 谓语是study 这是一个主谓结构的简单句.hard是修饰成分而不是句子的基本成分 hard是来修饰谓语study的.学习很刻苦
有问题欢迎追问

谓语是are,
Doctors是表语
谓语是study
hard 是状语

这个句子里没有谓语

这是系动词和实义动词的区别
系动词，亦称连系动词（Link Verb）。作为系动词，它本身有词义，但不能单独用作谓语，后边必须跟表语，亦称补语（形容词），构成系表结构说明主语的状况、性质、特征等情况。
am are 等等都是系动词
具体请看百度百科下面有链接，你也可以百度系动词查看跟多内容，相信对你有帮助的。...

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这是系动词和实义动词的区别
系动词，亦称连系动词（Link Verb）。作为系动词，它本身有词义，但不能单独用作谓语，后边必须跟表语，亦称补语（形容词），构成系表结构说明主语的状况、性质、特征等情况。
am are 等等都是系动词
具体请看百度百科下面有链接，你也可以百度系动词查看跟多内容，相信对你有帮助的。

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his parents are hard on they are his parents改成一般疑问句 These ____ (watch) are from his parents. they are his parents改成一般疑问句 His parents are quite _(worry).为什么? Are these his parents?改为肯定句 Those are his parents改同义句 Those are his parents.（单数） His parents are quite __(worry). Are these his parents?(改为肯定句) His parents are English 改为同义句 His parents are both teachers.和His parents both are teachers.哪句才对? His parents are always w_____ about his health. His parents are always () about his health.越快越好, His parents are doctors.中的are doctors是什么语 His parents are very healthy.（改为同义句） His parents are_____ ______ ____ Tom and his parents live on a farm.his parents are farmers. _______ pleased with his homework.A．His both parents are B．His parents are both C．All his parents are D．His parents are all请讲明白