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を
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action
6. indicates object of d...
表示动作的直接对象；表示经过的场所；表示离开或分开的点
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いけない
1. bad, wrong, naughty
2. must not (do, be), should not, ought not to
3. useless, no good, bad
4. hopeless, beyond hope
5. unfortunate, a shame, a pity
6. unable to drink (alcohol)
7. so as not to ..., so that ... (won't), in case ..., for fear that ...
以免……，以免……，以防万一……，担心……，唯恐……；坏了！坏的，错的；无望，毫无希望；真不幸，真遗憾，真可惜
