you had better be careful.had better 的词性是情态动词,be careful词性是名

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you had better be careful.had better 的词性是情态动词,be careful词性是名词,情态动词后可以跟名词吗?

had better可以看做情态动词是对的,但是be careful却不是名词,be是动词作谓语,careful是形容词作表语,be + 形容词是系表结构.那么这个句子其实是主系表的结构,即主语+系动词+表语
情态动词是一种本身有一定的词义,但要与动词原形及其被动语态一起使用,给谓语动词增添情态色彩,表示说话人对有关行为或事物的态度和看法,认为其可能、应该或必要等.情态动词后面加动词原形.
所以情态动词后面不可以直接接名词,如果想要接名词,需加一个实意动词的原形之后再接名词.

you had better be careful.had better 的词性是情态动词,be careful词性是名 1.we had better be careful.为什麽这里用be,而不是are?是因为had better 是情态请问had better是情态动词吗 It would be better. 用法是情态动词的么? You had better do sth中的had是什么词性? had better是情态动词吗?他的否定和疑问句如何构成? be careful. Which one is better? You had better ask your father.中had better 是什么词性,什么成分为什么下句不是You would better be more careful with you work,的缩写? 不是副词修饰动词吗?为什么是you have to be careful? careful不是形容词吗? It had better be good. You had better+动词原形