too句型：
(1) too...to do sth.
例：Politics is too important to be left to the politicians.
(=Politics is so important that it can't be left to the politicians.)
政治太重要了，不能由政治家来决定。
(2) only too --- to do sth
例：I shall be only too pleased to get home. 我要回到家里就非常高兴。
(3) too adj for sth
例：These shoes are much too small for me. 我穿这双鞋太小了。
(4) too adj a n.
例：This is too difficult a text for me. 这篇课文对我来说太难了。
(5) can't … too 形容词 无论……也不为过
例：We cannot emphasize the importance of protecting our eyes too much.
我们再怎么强调保护眼睛的重要性也不为过。
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