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> **(A)** 今日は映画を見たり買い物をしたりで楽しかった
>

>> I had a good time seeing a movie and going shopping today.

* * *

From [wildnihongo.com](https://wildnihongo.com/grammar/tari-tari-suru/),

> When ~たり~たりする is not the final segment of a sentence and the main predicate
> is an adjective (i.e. not a verb), する may be omitted. If the main predicate
> is a verb, する can NOT be omitted.
>
>   * E.g. 歌ったり踊ったりとても楽しかった。[Doing things such as singing and dancing was
> really fun.] In this example, ~たり~たりする is not the main predicate and the
> main predicate is an adjective. Thus, する can be omitted.
>

As far as I'm concerned the main predicate of **A** is 楽しかった, which is an
adjective. Is the following correct then?

**(B)** 今日は映画を見たり買い物をしたり **した** で楽しかった

* * *

My books nor the book from which I got the example can't help me parse this as
they just state that する follows predicates in the たり form, not to mention this
not always the case.
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2021-12-02T05:24:55.940
91416
2021-12-03T04:30:43.757
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question
grammar
Is する omitted from ~たり~たりする because the main predicate is an adjective?
Grammatically, something like 歌ったり踊ったり is a long **noun** phrase that can work
also as a suru-verb or a no-adjective.
[～ては～て](https://japanese.stackexchange.com/a/41664/5010) is very similar in
this regard, too. Since it's essentially a noun, you can say:

  * 歌ったり踊ったり **を** 3時間続けた。
  * 歌ったり踊ったり **が** 好きです。
  * 「今何してる？」「歌ったり踊ったり **です** 。」
  * ステージで歌ったり踊ったり **の** 経験があります。

In 歌ったり踊ったり **で** 楽しかった, this で after the second たり is a te-form of the copula
だ used to denote a reason/cause. It's the same で as in 幸せそうでよかった ("I'm glad
that you look happy") and 心配で電話しました ("I called him because I was worried").
You can rephrase the sentence as 歌ったり踊ったり **して** 楽しかった using the te-form of
する, too. They should look natural once you understand 歌ったり踊ったり is a noun.
However, 歌ったり踊ったり **したで** 楽しかった is incorrect simply because する/した and だ/で
cannot be joined directly (you cannot say するだ/しただ in any condition).

The next question is why even 歌ったり踊ったり楽しかった is correct if ～たり forms a noun. I
feel something like で or して is omitted before 楽しかった, as your textbook says.
This happens in speech, but it's not common in written Japanese. This happens
only with adjectives probably because [たり after the last verb may be
omitted](https://japanese.stackexchange.com/q/4793/5010). 歌ったり踊ったり楽しんだ would
be taken as "I did things like singing, dancing and having fun" rather than "I
had fun singing and dancing".
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2021-12-02T07:49:03.047
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2021-12-03T04:30:43.757
2021-12-03T04:30:43.757
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91416
answer