1.太...以致不能...
The boy is still too young to go to school.
小男孩还不到上学年龄。
He is too excited to speak.
他太激动了,说不出话来。
2.当too 前面有only, all, but时,意思是:非常… 等于very。
I'm only too pleased to be able to help you. 我非常高兴能帮助你
3.如在too前有否定词,则整个句子用否定词表达肯定, too 后那个词表达一种委婉含义,意 为"不太"。
It's never too late to mend. (谚语)
改过不嫌晚。