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[深化认知] 一、非谓语动词作状语 1．不定式作状语 (1)动词不定式可以用作目的状语。注意其他非谓语动词形式不能用作目的状语。 To succeed, one must first of all believe in himself. 要想成功，首先必须相信自己。 (2)only to do sth.为不定式作结果状语，表示出乎意料的结果。 We hurried to the station, only to be told that the train had left. 我们急匆匆赶到车站，结果被告知火车已开走了。 (3)形容词或过去分词作表语时，后面可接不定式作原因状语。常见的形容词有：happy, lucky, glad, sorry, anxious, proud, disappointed, angry, surprised, ready, delighted, clever, foolish, pleased, fortunate, right等。 You will never know how happy I was to see her yesterday. 你永远不会知道昨天看到她时，我是多么高兴。 (4)在“主语＋系动词＋表语(形容词)＋to do”结构中，不定式的主动形式表示被动意义。该结构中常用的形容词有：easy, hard, difficult, important, impossible, interesting, pleasant, nice, comfortable, safe, dangerous等。 The chair looks rather hard, but in fact it is very comfortable to sit on. 这把椅子看上去很硬，但实际上坐上去很舒服。 | 
