... too ... to ...
结构︰主词 动词 too 形容词/副词 (for sb.) to-不定词…
说明︰此句型意为“太…而(使某人)不能…”。too 为<副词>，可修饰<副词>或<形容词>。too 后也可接含有<形容词>的单数<名词>，即“too <形容词> a 单数<名词> to-<不定词>”，也可以是“too much <不可数名词> to…”或“too many 复数<名词> to…”。该句型如提到“对某人来说”，则加入“for 人”。该句型表示“否定”的意义，若加上<附加问句>，则须用否定，如例句8.
He walked too slowly to catch up with me. 他走得太慢而不能跟上我。
It is too dark in this room for me to read a book. 房间太暗，使我无法看书。
This problem is too difficult for them to settle. 这对他们来说真是一个难解的问题。
The price is too low for customers to believe. 价格低得令顾客难以相信。
He is too young a boy to do it. 他还太小，无法做这事。
He has too much work on hand to go picnicking with us.
他手头的工作太多了，不能跟我们去野餐。
He has too many things at his disposal to go home early.
有太多事要他处理，使他不能早点回家。
The boy is too young to do it， isn’t he? 这男孩年纪太轻不能做这件事，不是吗?
I am too glad not to ...
结构︰主词 动词 too 形容词/副词 not to-不定词…
说明︰此句型意为“太…而必能…；非常…”。本<句型>具有双重否定作用，也可将否定词移到<动词>部分。
Our professor is too capable not to solve this difficult problem.
我们教授非常有才干，必定能解决这一难题。
This customer is too honest not to deceive us. 这位客户非常诚实，不会骗我们。
I am too glad not to help the boy.我太乐意了而不能不帮助那男孩--我非常乐意帮助那男孩。
It is never too late to learn. 活到老，学到老。
I am only too ... to ...