what和whatever作为引导词来引导从句,它们之间到底有什么异同点?what只能引导名词性从句,如主语从句、宾语从句、表语从句和同位语从句,whatever既可以引导名词性从句,又可以引导让步状语从句。一、what引导名词性从句what引导名词性从句时,可在主语从句、宾语从句、表语从句和同位语从句中充当成分,其意思主要有以下两种:一是含有疑问含义,表示“什么……”;二是相当于“名词/代词+关系代词引导的定语从句”结构,意为“……的事情/东西/样子/颜色”等。下面我们看看what在句中的意思以及相应的 What and whatever as a guide to guide the subordinate clause, what is the difference between what? What can only guide the nominal subordinate, such as subject clause, object clause, epigram clause and appositive clause, whatever can guide the nominal clause, Can guide concession clause. First, what to guide the nominal clause What to guide the nominal clause, the subject clause, object clause, the clause clause and the appositive clause as a component, its meaning mainly in the following two: First, contains the meaning of doubt, said What is ...... “; second is equivalent to ” noun / pronoun + relational pronouns attributive clause “structure, meaning ” ... ... things / things / look / color "and so on. Here we look at what in the sentence mean and the corresponding