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For example, consider the two following options:

  * 日本語の本が読めたい。
  * 日本語の本が読むことができるになりたい。

Is the first construction valid? If so, how is it different from the second
(in terms of meaning, formality, etc.)?
CC BY-SA 4.0
2020-01-07T02:36:51.227
73773
2020-01-07T02:44:52.837
36515
question
grammar
Can I use the potential form with the ～たい ending?
Both sentences are ungrammatical. The correct forms are:

>   * 日本語の本が読め **るようになり** たい。
>   * 日本語の本 **を** 読むことができる **よう** になりたい。
>

You cannot directly combine the the potential-form and the tai-form. You
cannot combine the dictionary-form and になる, either. The workaround for both
cases is ようになる. The usage is explained in many other pages including
[this](http://maggiesensei.com/2017/08/22/%E3%81%93%E3%81%A8%E3%81%AB%E3%81%AA%E3%82%8B%E3%81%99%E3%82%8B-koto-
ni-naru-%E3%82%88%E3%81%86%E3%81%AB%E3%81%AA%E3%82%8B%E3%81%99%E3%82%8B-you-
ni-narusuru/).

Also note that 本 **が** 読むことができる is incorrect because 本が読むこと itself has no
potential form. You have to say 本を読むことができる instead.

The difference between the two is fairly small, but please read: [ことができる
versus V~える form](https://japanese.stackexchange.com/q/2689/5010)
CC BY-SA 4.0
2020-01-07T02:44:52.837
73774
2020-01-07T02:44:52.837
5010
73773
answer