传统英语语法 (traditional grammar)认为情态 (modality)主要用 must,may,can等情态动词来表达。通常 ,传统语法逐个分析情态动词的用法 ,详细叙述它们的多种含意。而意念语法 (notional grammar)则从交流思想的角度去看问题 ,认为情态的概念多种多样 ,情况复杂。情态的多种概念可以用多种方法去表示。同时 ,情态的各种概念具有内在联系 ,可以进行横向的比较。英语情态中的一种试探性情态 (Tentative Modality)有四种概念 ,有各自不同的表达方法 Traditional grammar (traditional grammar) that the main modality, must, may, can and other modal verbs to express. Traditionally, the traditional grammar analyzes the usage of modal verbs one by one, detailing their multiple meanings. The notional grammar, on the other hand, looks at the issue from the perspective of exchange of ideas. It considers the concept of modality to be diverse and complex. A variety of modalities can be expressed in many ways. At the same time, various concepts of modality are intrinsically linked and can be compared horizontally. A Tentative Modality in English Modality There are four concepts, each with its own way of expressing