to all appearances . apparently显然

What he said was to all appearances correct．他所说的显然是正确的。

 to and fro . back and forth来回地

I saw him walking to and fro in his room at that time．我看见他那时在房间里来回踱着步。

to be sure . certainly当然

She is not pretty， to be sure， but she is very intelligent．她固然不漂亮，但她非常聪明。

to begin with . in the first place首先；第一点

To begin with， there must be close cooperation between them．首先，在他们之间要有密切的合作。

 to little purpose .  to no purpose . of no avail毫无结果

He worked to no purpose．他只是徒劳而已。

We spoke to little or no purpose．我们说话作用不大或者毫无作用。

 to my knowledge . as far as I know（usu． used in negative form）就我所知

To my knowledge， there is no such a saying in Chinese．就我所知，汉语中没有这种说法。

to one's feet . to a standing position站立着；起身

His wife's call brought him quickly to his feet．他夫人的呼唤使他急忙站起身来。

to one's heart's content . to one's greatest satisfaction尽兴地

They played to their heart's content．他们痛快地玩了一场。

to somebody 's credit . to somebody.'s honor是某人的荣誉

It is greatly to your credit that you succeeded．取得成功是你莫大的光荣。

 to somebody 's disappointment . resulting in somebody 's disappointment 使某人失望

To her great disappointment，it rained on the day of the picnic．野餐那天下了雨，使她大失所望。

 to somebody 's face . in somebody.'s presence当某人的面

I can ever say that to his face.我甚至可以当他的面说那件事。

to somebody.'s mind . in somebody.'s opinion某人以为

To my mind， he will fail in the examination．我认为他考试不会及格的。

to somebody.'s taste . to somebody.'s liking投某人所好；适合某人口味

The food he cooks is to my taste.他做的饭菜合我的口味。

to start with . first； for one thing首先；第一；开始

To start with，I haven't enough reference books．首先，我没有足够的参考书。

 to the contrary . to the opposite effect相反地

I will come on Monday unless you write me to the contrary．我将于星期一来，除非你写信叫我不要来。

I have heard nothing to the contrary．我还没有听到任何相反的情况。

 to the effect that . to the import that； meaning大意是；含意是

I have received a cable to the effect that someone would come to see me．我收到一封电报，大意是说有人要来看我。

to the full . entirely完全

I am very busy and my time is occupied to the full．我很忙，没有一点空闲时间。

 to the last . to the end到最后；到底

They fought to the end．他们战斗到最后。

to the point . relevant中肯

His speech was very long and not to the point．他的演讲冗长而且不切题。

to this day . up to this time直到现在

I still don't know her name to this day．直到现在我还不知道她的姓名。

tone up . become stronger and more effective 使强壮；加强

Swimming is the best way to tone up your muscles．游泳是锻炼肌肉的最好方法。

tooth and nail . with all one's efforts尽全力

We must work tooth and nail for the country．我们必须全力为国家工作。

 top up . fill to the top加满

Let me top up your drink；it,is,half gone．只剩下半杯了，让我给你加满。

touch up . repair； restore修整

She is touching up her car．她正在修整车子。

touch on . touch upon . mention说到；谈及

In his lecture， the professor touched on the importance of studying English．教授在演讲中谈到英语学习的重要性。

trace back . follow a chain of evidence追溯

The custom can be traced back to the fifth century．这个习俗可以追溯到五世纪。

triumph over . win victory over战胜

He triumphed over his rivals．他战胜了对手。

trust in . have confidence in信任

We can't trust in what he said．我们不能相信他的话。

 trust to . rely upon依赖

You trust to your memory too much. 你过于相信自己的记忆力了。

 try on . put on to test试穿

Never buy shoes without trying them on.买鞋时务必要先试穿一下。