You cannot be too cautious.
You can hardly praise him too much.
A man can never have too many friends.
Newton's contribution to modern science can scarcely be overrated.
He can't see you quickly enough.
I cannot wait to read your new book.
I cannot wait to see her.
b.no (nobody)… but 都、没有…，不，只有…，才
There is no man but has his faults.
There is no rule but has exception.
Nobody reads the book but will be moved.
There exists no man but has an enemy.
这种结构中的but起关系代词的作用，相当于that、which、who does/will/have not.
c.never (not)…，but (that)每当…总是…，没有哪次不是……
I never see you but think of my mother.
It never rains but it pours.
Never a day passed but brought us good news.
He will not be angry but that he is offended.
d.nothing but、none but 仅仅，只，只有…才
nothing but后接非指人的名词、none but后接指人的名词，与nothing other than同义意为“仅仅，只有…才”
We can see nothing but water.
We found none but an old man in the room.
None but me knew what happened.
None but a fool would do such a thing.
You can find that sort of bird nowhere but in Australia.
e.noting else than（仅仅，完全）
His failure was due to noting else than his own carelessness.
f.no (none) other than正是、仅仅是
This is no other than the book we want to buy.
She is none other than my adviser.
g.more often than not、as often as not常常、往往
During foggy weather, planes are late more often than not.
I cannot agree with you more.
He could not feel better.
The film cannot be better.
He wants nothing more than time.
Nothing is more precious than health.
There is no smoke without fire.
j.no otherwise than只是，仅仅
He is no otherwise afraid than of his father.
He does no otherwise than fool around all day.