too to中的有形容词在什么情况下表示肯定意义

在下列情况下，"too...to"结构可以表示肯定意义：

1."too...to"结构之前带有but, only, all, never, not时，是强调肯定的表示法，译作"非常……"、"十分……"、"实在……"、"真是太……"等。例如：
I am but too glad to do so.我非常喜欢这样做。
We are only too happy to live in China.生活在中国，我们太幸福了。
They are all too satisfied to go and do this work.他们很乐意地去做这项工作。
You're never too old to enjoy a Christmas stocking.你绝对不会老得不能获得圣诞长袜带来的快乐。
English is not too difficult to learn.英语并不难学。
2."too...to"结构中带有表示某种心情或描绘性的形容词或副词，如ready,apt,eager,satisfied,inclined, kind,willing,easy,anxious等加动词不定式结合成一个不可分割的状态、态度、倾向或心情等，并且其后的不定式不是说明too的具体内容，而是修饰形容词，故不定式不再表示结果。例如：
Comrade Lei Feng was too ready to help others.雷锋同志乐于助人。
The old woman is too apt to forget.这位老太太太健忘了。
We are too willing to be scientists.我们太想当科学家了。
He is too inclined to be cheated.他很容易上当受骗。
He was too anxious to do this job.他非常想干这件工作。
She is too hard to deal with.她极难相处。
I am too eager to have a world travel.我很想有一次环球旅行。
It's too kind of you to tell me that.(＝You are very kind to tell me that.)你告诉我那件事真是太好了。
3.在"too...to"结构中，不定式为否定式时，是构成的双重否定，其意为"非常(很，太，那么)……不会不(必定能，所以能)……"，也不表示否定意义。例如：
He is too kind not to help you.他很善良，不会不帮助你。
The girl is too careful not to do it well.这姑娘很细心，完全能干好那件事。

too...to在下列情况下表示肯定含义:
⑴当too前或to前有否定词构成双重否定时.
eg:English is not too difficult to learn.
英语并不太难学.
He is too wise not to see that.
他很聪明,不会不懂这一点.
⑵当too后是glad,pleased,happy,delighted,satisfied,ready,willing,kind,apt,good,
true,easy,near,careful,well,early,delicious,eager,anxious等形容词或副词时.
eg:They are too anxious to leave.
他们急于离开.
He is too ready to help others.
他总是乐于助人.

与这些词连用时,too前还常加上only,all,but,just,simply等副词,意思不变,因为这些词加上too后与very同义.
eg:I'm only too glad to see you .
见到你非常高兴.
They are but too pleased to hear the news.
他们听到这个消息,非常高兴.
⑶与cannot连用时.
eg:You cannot be too careful(=You can never be careful enough) to do your homework.
你做作业越仔细越好(=无论怎样仔细也不过分).
⑷当不定式在句中作定语或真正的主语时.
eg:There are too many problems to be solved.
有很多问题有待解决.
It is too much to say that he is a fool.