Sentence A: 日本語が 難{むずか}しくて勉{べん}強{きょう}を 辞{や}めたくなることが ありますか。
Sentence B: 日本語が 難{むずか}しくて勉{べん}強{きょう}を 辞{や}めたことが ありますか。
What type of attribute does なる add to sentence A that is not exist in sentence B?
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Sign up to join this communitySentence A: 日本語が 難{むずか}しくて勉{べん}強{きょう}を 辞{や}めたくなることが ありますか。
Sentence B: 日本語が 難{むずか}しくて勉{べん}強{きょう}を 辞{や}めたことが ありますか。
What type of attribute does なる add to sentence A that is not exist in sentence B?
Note that 辞めた is just past tense: I quit (stopped) [studying].
However, 辞めたくなる is not past tense. In fact this is
辞めたくなる = 辞めたい + なる
which means I'm getting to want to quit [studying]"
Now, if you just said,
辞めたい
then that's just I want to quit.