「そこで泳ぐことがありますか」or 「そこで泳いだことがありますか」


I'm asked to complete the following sentence with the appropriate inflected
form of the verb:

[![img1](https://i.stack.imgur.com/YRHS0m.jpg)](https://i.stack.imgur.com/YRHS0m.jpg)

The book provided a translation: "Have you ever had a swim there?" This
indicates experience as far as I can tell, so my answer is the following:

> そこで泳 **いだ** ことがありますか

However, the book answer is `泳ぐ`

[![img2](https://i.stack.imgur.com/PC5Eem.jpg)](https://i.stack.imgur.com/PC5Eem.jpg)

I'm not sure what I'm missing. I thought the construction was `~たことがある`




～したことがある means "have done" with the focus on the thing at issue having
happened in the past or having a certain experience.

～することがある means "occasionally/sometimes do", focusing instead on the action
being a possible occurrence.

For the grammar point, see, for example, [this](https://nihongokyoshi-
net.com/2019/05/09/jlptn4-grammar-kotogaaru/) and
[this](https://j-nihongo.com/dic-kotogaaru/).

そこで泳ぐことがありますか means "Do you swim there?" or more literally "Does it ever
happen that you go there for a swim?" Since the English sentence is "Have you
ever had a swim there?" You got it right. I think it should be そこで泳いだことがありますか




～したことがある means "have done" with the focus on the thing at issue having
happened in the past or having a certain experience.

～することがある means "occasionally/sometimes do", focusing instead on the action
being a possible occurrence.

For the grammar point, see, for example, [this](https://nihongokyoshi-
net.com/2019/05/09/jlptn4-grammar-kotogaaru/) and
[this](https://j-nihongo.com/dic-kotogaaru/).

そこで泳ぐことがありますか means "Do you swim there?" or more literally "Does it ever
happen that you go there for a swim?" Since the English sentence is "Have you
ever had a swim there?" You got it right. I think it should be そこで泳いだことがありますか

