The patient is too weak to walk.
那个病人太虚弱了，走不动。
We are only too willing to do it for you.
我们非常愿意为你做那事。
I am only too delighted to accept your king invitation.
我非常高兴地接受你的邀请。
五、在“one of + 复数名词 + 定语从句”的结构中，定语从句一般被看作修饰复数名词，谓语要用复数形式。但在“the only one of + 复数名词 + 定语从句”的结构中，定语从句却被看作修饰“the only one”，谓语动词要用单数形式。如
This is one of the best novels that have been published in the past two years.
这是近两年出版的最好的小说之一。
He was the only one of the boys who was given a prize.
他是这些孩子中唯一受到奖励的。
She is the only one of the girls who has been to the US.
她是那些女孩中唯一去过美国的。
六、If only 为虚拟语气的一种，表示愿望或一个未实现的条件，多用于感叹句，其主句常常省略。如
If only she would marry me!
她要是能和我结婚该多好!
If only he had known about it!
他那时要是知道这件事该多好!
If only you could have been here earlier that day!
要是你那天再早点到这就好了。
If only there were forty-eighty hours in a day.
要是一天有48个小时就好了。