2. 不定式作状语
不定式作状语时往往用来作目的状语、结果状语或原因状语。
(1)不定式用来作目的状语：作目的状语时，不定式的逻辑主语通常也是全句的主语，往往译作“为了，想要”。
To be a winner，you need to give all you have and try your best.
要想成为赢家，你要付出所有并竭尽全力。
To complete the project in time，the staff were working at weekends.
为了及时完成这项工程，全体员工周末加班。
(2)不定式用于：so...as to...；such...as to；enough to...；too...to；only to等结构中往往用来作结果状语。
Would you be so kind as to lend me your bicycle?
你能不能行行好，借给我你的自行车？
He's such a fool as to think that his idle chatter can influence others.
他如此愚蠢以至于认为他的闲扯能影响别人。
He hurried to the booking office only to be told all the tickets had been sold out.
他匆忙去了售票处，结果被告知所有的票已经卖完了。
(“only＋to do”表示出乎意料的结果，tell和主语he之间存在动宾关系，因而应用不定式的被动结构)
