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Can someone please explain the fine nuances of these two? Things such as:

  * Are there conditions/restrictions of when you can use one or the other?
  * What are the "approximate" time periods that each covers?
  * Anything else relevant...

Here's an example I saw on a particular website.

>   * 最近Xの機能を **使ってきた** みたい、ね！ → What it actually said
>   * 最近Xの機能を **使うようになった** みたい、ね！ → What I thought it should have said
>
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2012-05-13T23:18:56.150
5499
2015-01-08T17:29:12.120
2015-01-08T17:29:12.120
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question
grammar nuances
Come to ～: ～てくる vs. ～ようになる
I think (I'm not a native speaker!) that

  1. `~てきた` has more than one way you can use it. 

a) What you talk about is something you've not planned:

> やっと春がやってきた  
>  'Finally, spring has come.'
>
> 熊ちゃんが出てくるアニメが増えてきた。  
>  'Anime with Teddy bears in them have increased in number.'

b) Refer to an action that carries on til the time of speaking:

> 宿題をしてきた。/宿題を忘れて来た。  
>  `I've done/forgotten my homework.' (What you'd say to your teacher in
> class.)

2.On the other hand, `~ようになる` is what you say when the result you're referring
to was planned and desired, for example:

> 泳げるようになった！  
>  '(Yeah,) I can swim!' (after practicing it for a long time)

Hope this helps and hope native speaker will correct me if I said anything
wrong.
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2012-05-14T16:51:43.050
5515
2012-06-26T14:28:22.387
2012-06-26T14:28:22.387
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answer
It depends on the _aspectuality_ (or more specifically, _telicity_ ) of the
predicate.

  * With _telic_ predicates like `現れる, 染まる`, the event described involves a change of state. There is a change within the event before and after this point. With such predicates, various forms have the meanings such as the following:

> 現れている (perfect)  
>  現れてくる (gradually 現れる towards the point of view of the first person)  
>  現れていく (gradually 現れる apart from the point of view of the first person)  
>  * 現れるようになる (ungrammatical)

  * With _atelic_ predicates like `使う, 走る, 食べる`, the event described does not involve a change of state, and is homogeneous throughout (unless there is a direct object indicating an endpoint such as `このボンベを使う, 100メートルを走る, おにぎりを一つ食べる`). With such predicates, various forms have the meanings such as the following:

> 使っている (progressive)  
>  使ってくる (使う on the way or before coming)  
>  使っていく (使う on the way or before going)  
>  使うようになる (gradually/eventually come to 使う)

There is no fixed time period for `最近`. It depends on the context.
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2012-06-26T15:06:05.367
5968
2012-06-27T05:33:40.633
2012-06-27T05:33:40.633
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answer