The purpose of an auxiliary verb あげる


It is a very basic question that up to now I don't quite understand. あげる just
gives additional information about the direction of action. Because 貸す
provides direction of action clearly, I think あげる is no longer needed.

In other words, sentence B below should be more efficient than the sentence A
without loss of any meaning. What do you think?

> A: 僕は君にお金を貸してあげた。
>
> B: 僕は君にお金を貸した。

In English they are both translated to "I lent money to you.".




> あげる just gives additional information about the direction of action.

No, that's not correct. The subsidiary verb あげる implies the subject is doing
something beneficial to the other person. So depending on the context,
Sentence A may sound like the speaker is asking for a word of thanks.

In Sentence B, on the other hand, the speaker is describing what he/she did
matter-of-factly.

See:

  * [real meaning of 子供に話を聞かせてあげました](https://japanese.stackexchange.com/q/21114/5010)




> あげる just gives additional information about the direction of action.

No, that's not correct. The subsidiary verb あげる implies the subject is doing
something beneficial to the other person. So depending on the context,
Sentence A may sound like the speaker is asking for a word of thanks.

In Sentence B, on the other hand, the speaker is describing what he/she did
matter-of-factly.

See:

  * [real meaning of 子供に話を聞かせてあげました](https://japanese.stackexchange.com/q/21114/5010)

