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From what I learned,

> もらえる = もらうことが出来る  
>  'can be got'
>
> 見える = 見ることが出来る  
>  'can be seen'

This looks like there is some kind of a more general rule for this
transformation.

  1. If there is a pair of such verbs, is the one with ~え~ always meaning ~ことが出来る?
  2. Is there any rule when can I create a ~え~ verb this way?
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2011-12-08T16:11:18.920
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2011-12-30T09:16:56.683
2020-06-17T08:18:27.500
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question
grammar verbs potential-form
もらえる, 見える rules
No to both of your questions. You are mixing up different things.

  * `もらえる` is the potential form of the verb `もらう`, and it means the same thing as `もらうことができる`.

  * `見える` 'can be seen, is observable' is related to the verb `見る` 'see', but means a different thing. The construction is different from `見ることができる`.
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2011-12-08T17:12:21.143
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answer
They are some ways to get verbs end with える:

  1. 五段動詞 can change the last kana to え段 and add る to form a kind of 可能動詞, like:

> もらう → もらえる  
>  書く → 書ける  
>  飛ぶ → 飛べる

They have a similar meaning of the "れる" form : もらわれる 書かれる 飛ばれる. In modern
Japanese, the れる form is not so popular as the form of "可能動詞".

  2. える is a verb that can be used after the 連用形 of other verbs to show ability or possibility:

> ある → ありえる  
>  起こる → 起こりえる

みえる and 聞こえる (I don't know if there are more) are another story, they are from
みゆ and きこゆ in classic Japanese.
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2011-12-08T17:15:48.300
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2011-12-30T09:16:56.683
2011-12-30T09:16:56.683
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answer