主语+谓语+so/such+形容词/副词+as to do
   句型“主语+谓语+so/such+形容词/副词+as to do”的特点是主句与从句的主语必须是同一个主体。"so as to do"可以是不定式的完成式、被动式或否定式。


.Your son is so unfortunate as to join so many interest classes.
你儿子真不幸要参加这么多的兴趣班。
.That old woman was so angry as to shake.
那个老妇人气得发抖。
.It is so hot as not to move any more
太热了。一点都不想动。
.Mount Huang is so beautiful as to attract thousands of tourists.
黄山的景色太美了吸引了成千上万的游客。
.His voice is so loud as to influence us.
他的声音太大影响到我们。


—Don't be angry.
—His behavior was so foolish as to angry Me.
—不要生气了。微信:jzbedu
—他的愚蠢的行为激怒了我。
—Why does Mary study hard?
—She studies so hard as to study abroad.
—玛丽为什么这么认真学习?
—她这么认真学习是为了留学。
—He had been silent for a long time.
—He was so sad as not to say a word.
—他已经沉默很久了。
—他难过得说不出话来。

注意:
   “so”和“as to”,连在一起表示结果和目的。“so that”和“so as to”都可以用来引导表示目的结果的状语。例如:She worked hard so as to get much more money. She worked hard so that she could get much more money.她努力工作是为了挣更多的钱。