如:It is essential for him to be prepared for this. 有必要让他对此有所准备。 3. 能用于it’s adj. for sb to do sth的形容词不多,主要的有bad, bold, clever, common, honest, necessary, nice, normal, pointless, rare, (all) right, rude, sensible, stupid, ...
常用结构:It+be+ adj./n.+ for sb. to dosth. (常见形容词: difficult , important, necessary, impossible, etc.) It+be+adj. + of sb. to do sth. =sb. be + adj. + to do sth. (常见形容词:clever, silly, foolish, stupid, wise, kind, rude, impolite,careless, ...
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