too to 意为太。。以至于不能。。
相同的句型有：so...that... such...that...
意思为 太。。。以至于。。 没有像too...to包含了否定，所以要自己加
so后面接形容词
such后面接名词或相当于名词的短语
给你三个例句：
too... to... She is too fat to run.
so...that... She is so fat that can't run.
such...that... She is such a fat girl that can't run.
三个句子意思一样：她太胖了以至于跑不起来。
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