原形.
1.too...to结构通常表示否定意义,意思是"太……不能","太……不会".
eg.It's too early for us to go yet.现在太早了,我们不会去的.
1.too...to结构相当于so...that...not.
eg.It is too late for us to catch the train.→It is so late that we can not catch the train.太晚了,我们赶不上火车了.
2.有时候,当too...to do结构中的do既可作及物动词,又可作不及物动词时,含有too...to结构的句子往往产生歧义
eg.Tom is too selfish to help.→Tom is too selfish to help others.汤姆太自私了,不会帮助别人.→Tom is too selfish to be helped by others.汤姆太自私了,别人不会帮助他.
3.too...for也表示否定意义,相当于too...to,意为"太……不适合(不能)".例如:
He is too young for the work.=He is too young to do the work.他太年轻,不适合这份工作.
It's too cold outside for jogging.=It's too cold outside to go jogging.外面太冷了,不能去跑步.
二、too...to结构并不一定都表示否定意义,遇到下面几种情况时,too...to结构表示肯定意义.
1.当too前面有only,all,not,but,never,simply,just等词时,too...to结构表示肯定意义.例如:
I am only too pleased to see you.非常高兴见到你.
You know but too well to hold your tongue.你深知少说为妙.
2.当too后面是 eager,anxious,pleased,kind,willing,inclined,ready,glad,quick等词时,too...to结构表示肯定意义.例如:
I am too eager to go there.我太想去那里了.
3.too...to结构的否定形式表示肯定意义,有两种变法:
一是在too前加not,构成not too...to,通常否定整个too...to结构而表示肯定含义,意为"并不太……,所以能……".例如:
The article is not too difficult to translate.这篇文章并不太难,很容易翻译.
She is not too angry to speak up.她不太生气,能够说出话来.
另一种方法是在不定式to do前加not,通过否定不定式而表示肯定含义,大致相当于so...that one can,意思是"太……一定能(不可能不)……"、"太……忍不住(不免)……".例如:
He is too clever not to understand the importance of this question.=He is so clever that he can understand the importance of this question.他太聪明了,一定能(不可能不)懂得这个问题的重要性.
She was too angry not to say what she thought.=She was so angry that she could not but say what she thought.她太气愤了,忍不住要说出心里的话.