一、非谓语动词作状语的区别:
1.不定式:目的和结果状语,
2.分词:时间、原因、条件和伴随方式状语
二、不定式短语作状语可以放在句首,短语后需要用逗号;也可以放在句尾,但是前面不能加逗号.如:
前置:To enable the students to return to their classrooms,the retired man donated most of his savings to the school damaged by the earthquake in yushu.
后置:The retired man donated most of his savings to the school damaged by the earthquake in yushu to enable the students to return to their classrooms.
目的状语的意思是:为了能使那里的学生重返教室,那位退休老人把自己大多数积蓄捐赠给了玉树被地震破坏了的学校.
三、后置的分词短语一般用作伴随方式状语,如果状语部分较长,前面用逗号与句子的主体部分分开,如:
The retired man donated most of his savings to the school damaged by the earthquake in yushu,enableing the students to return to their classrooms.
意思是:那位退休老人把自己大多数积蓄捐赠给玉树被地震破坏了的学校,(以此方式)使得那里的学生能够重返教室.