強制されて英語をやらされても効果は望めない  "I Just Called To Say I Love You" Stevie Wonder
 
 
The key word in the headline is "motivates".
We can all learn, or at school level, be made to learn a Modern Foreign Language, but if our heart is not in it coupled, perhaps, with the need to learn it (e.g. a posting to the target-language country), then we won't do so successfully.
 
これに関してはこんな記事もありました。
Motivation in Language Learning is one of the important elements to successful language learning.
 
  People say such things as “lessons need to be interesting”, “the lessons need to be relevant” or “it’s so boring”.  All these statements point at the problem but do not get to the core problem.  For learning to happen you, the learner, need to be actively engaged, from your own feelings.
 Some of the things that turn us off from being engaged and motivated is learning something which:
 
1)    We do not really want to learn.
 
2)    Is too difficult.
 
3)    Does not actually lead to real mastery of the area, just knowledge .  I may know the conjugations of a verb, but can I use them?
 
4)    Doesn’t challenge me. (simple repetitive drills are a good example of that but really there are so many)
 
In our schooling most of us were taught to ignore our own feelings about what we were learning, and had to pay attention or else get punished, do the exercises we were set, whether we liked them or not, learn the lessons EVEN IF we were not engaged or interested. 
 
This kind of learning will not serve us in language learning, as most learning is done while we are speaking, listening, reading- not doing our homework or exercises.  So to become a better ( dare I say great) language learner we have to learn to retrain ourselves to look for activities where we can get involved, engaged, motivated and be having “fun”.  We have to learn once again to start paying attention to our feelings so we can find out what kinds of activities will engage us. This way our language learning motivation will certainly increase.
Once we are engaged in learning, then there are other key strategies that will enable our learning to move forward.  But without this engagement, these language learning strategies will not even surface.
 
 
あ、そうそう、昔、こういうコマーシャル、ありましたよね。
「やる気にさせます!」自分でやる気になってくれれば強制ではありませんよね。
やっぱり、どこか楽しい部分がないと、ね。語学学習に、あるいはその先に。長く続けるには。

強制されて覚えた知識としての英語はその後、どうなるでしょうか。

なお、中国語で勉強という漢字の意味は 強制する、渋々、嫌々ながら、だそうです。読んで字の如くですね。
中国語で「勉強しなさい」というのは好好学習 というようです。ちゃんと学習しなさいよ、ということであろうが、
努めて強いさせるより、好き好き学習の方が効果、ありそうですね。
 
 
Stevie Wonder - "I Just Called To Say I Love You"
♪I just called to say I love you
 And I mean it from the bottom of my heart
心の底から(  )が好きな部分がないと。