31. so as to / in order to / to 为了.作目的状语

  He went home to see his mother.

  He shouted and waved so as to be noticed.

  John hurried so as not to be late for the party.

  Modern equipment is fitted in our classroom for all the students to study well.

  The letter was read out for all in the court to hear.

  注意: to do/ in order to do 可放在句首,so as to 不可

  (1)._____late in the morning, Bob turned off the alarm.

A. Having slept  B. To sleep  C. Sleeping   D. Sleep

  (2). -------Dad, Why do you buy so many tapes for me to listen to?

-----______your listening.

A. Improve  B. Improving  C. Having improved   D. To improve

  (3). Do whatever you could _____ him.

A. help  B. to help  C. helping  D. helping

 注意: 只有不定式 to do/ in order to do/ so as to do可以作目的状语

    Only to do表示未曾料到的愉快或不愉快的结果:

  She woke early only to find it was raining.

  He got home only to learn that his father was ill.

  He got to the station only to find the train had gone.

  “Lifting a rock only to drop it on one’s feet” is a Chinese folk saying.

  She hurried back only to find her old friend George waiting for him.

  对比:

  现在分词表示主句动作所造成的结果:

  He was caught in the rain, thus catching cold.

  Their car was caught in the traffic jam, thus causing the delay.

  To do 作结果状语:( 表示不愉快或意外结果)

  He must be deaf not to hear that.他聋得听不见.

  She went abroad never to return.她出国了,结果再也没回来.

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