This paper examined the features and productivity of the construction “Shi (是)+ Double-Syllable Modal Verb (能愿动词双)+De (的)” from the aspect of constructional coercion. This construction is used to express judgment, a result of predicate implicitness. The double-syllable modal verbs are suppressed and given the function of verbs. The constructional features mainly include the qualia role of “De (的)” and the de-categorization of the modal verb, while its whole feature focuses on the emphasis and subjective evaluation. The construction of “Modal Verb (能愿动词双) + De (的)” hold the function of the response discourse marker in “Keyi (可以)”, “Yinggai (应该)” and “Bixu (必须)”, which is the manifestation of a pragmatic generalization after high frequency use.