无从……

无从…… means "have no way to" and follows the frame 无从 A. Use it when the sentence needs to have no source, way, or basis to do A. Pay attention to register: many patterns in this group are formal, evaluative, or rhetorical, so they are stronger than everyday words. Do not choose a pattern only because the translation looks close; check whether the sentence is evaluation, sufficiency, inevitability, suggestion, or rhetorical affirmation/denial. Common mistakes include dropping fixed characters such as 于, 是, 不, 能, 非, confusing 无法, 不能, 没办法, or using a rhetorical pattern in a neutral statement.