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宿題， しゅくだい

1. homework, assignment 2. pending issue, unresolved problem, open question

家庭作业，作业；悬而未决的问题，未解决的问题，未决问题

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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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うっかり， ウッカリ

1. carelessly, thoughtlessly, inadvertently

不小心、不经意、无意中

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忘れる， わすれる

1. to forget, to leave carelessly, to be forgetful of, to forget about, to forget (an article)

忘记；随意丢弃；疏忽；忽略；不再提及(某事)；遗忘了(某物品)

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彼， かれ

1. he, him 2. boyfriend

他

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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

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