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だめ， ダメ， 駄目
1. no good, not serving its purpose, useless, broken
2. hopeless, wasted, in vain, purposeless
3. cannot, must not, not allowed
4. neutral point, intersection owned by neither player at the end of a game
5. no!, stop!
没用，毫无价值；绝望的，徒劳的，白费的，毫无意义的；不能，不准，不允许；不！停下！
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
が
1. indicates the subject of a sentence
2. indicates possession
3. but, however, (and) yet, though, although, while
4. and
5. used after an introductory remark or explanation
6. regardless of ..., whether ... (or not), no matter ...
7. indicates a des...
tbd
