I'm not sure, but I think there is an error in Genki's Grammar point of Lesson
16:

In the first grammar point they explain ～てあげる/くれる and say that if a verb
doesn't have a "beneficiaries part" like **〇〇さんに** 貸してあげる, for example with
the verb 行く, you can use 〇〇さん **のために** as a substitute. They give this example
sentence:

> 私は智子さんのために買い物に行きました。  
>  _I went shopping for Tomoko_

But it's completely missing the あげる.

Shouldn't it be 私は智子さんのために買い物に **行ってあげました。**?

First I thought "well ok, you don't actually use あげる here", but down the
grammar point they make the same remark in regards to くれる, that even though it
is mostly clear already who is the beneficiary, but you really want explicitly
state who receives the benefit, and if the verb you want to use has no place
for a person, you use のために again.

But here the example sentences uses ～てくれる unlike above where they didn't use
～てあげる:

> けんさんが私のために部屋を掃除してくれました。  
>  _Ken cleaned the room for me._

Question is now: Was this a mistake by Genki? Do you actually use ～てあげる when
you use のために or only with ～てくれる like they did. They didn't mention this at all
that the example sentences under あげる doesn't use てあげる but under the
"くれる"-section the example sentence uses てくれる.
CC BY-SA 4.0
2016-03-06T16:19:22.250
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2020-02-14T08:41:54.203
2020-02-14T08:41:54.203
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question
subsidiary-verbs giving-and-receiving
のために + ～てあげる/くれる
> 私は智子さんのために買い物に行きました。
>
> 私は智子さんのために買い物に行ってあげました。
>
> 私は買い物に行ってあげました。
>
> けんさんが私のために部屋を掃除してくれました。
>
> けんさんが部屋を掃除してくれました。
>
> けんさんが私のために部屋を掃除しました。

They are all correct. To be honest, they are not that different. With くれました or
あげました, the fact that someone is a beneficiary could have slight emphasis.
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2016-03-06T17:13:09.837
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2016-03-06T17:13:09.837
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answer