as far as one can tell

judging from the available information

根据现有的消息来判断

I tell you (或 I can tell you)

used to emphasize a statement

我可以肯定地说，确实

that took me by surprise, I can tell you!.

确实，那使我深感意外！。

I (或 I'll) tell you what

used to introduce a suggestion

我的主张（或意见、建议）是…；你听我说…

I tell you what, why don't we meet for lunch tomorrow?.

你听我说，为什么明天我们不碰头一块儿吃午餐呢？。

I told you (so)

used as a way of pointing out that one's warnings, although ignored, have been proved to be well founded

我早跟你说过的

tell one's beads

tell someone's fortune

tell it like it is

(informal)describe the true facts of a situation no matter how unpleasant they may be

(非正式)如实说来，实事求是地说，说实话

tell its own tale (或 story)

be significant or revealing, without any further explanation or comment being necessary

不言而喻，显而易见，不言自明

the worried expression on Helen's face told its own tale.

海伦脸上焦急的表情不言而喻。

tell me about it

(informal)used as an ironic acknowledgement of one's familiarity with a difficult or unpleasant situation or experience described by someone else

(非正式)我早知道了；还用你告诉我

tell me another

(informal)used as an expression of disbelief or incredulity

(非正式)不见得吧；我不相信；哪有这种事，别胡说

tell something a mile off

tell tales

make known or gossip about another person's secrets, wrongdoings, or faults

讲…的坏话；搬弄是非

tell that to the marines

tell the time (或美tell time)

be able to ascertain the time from reading the face of a clock or watch

会认钟，会看钟点