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彼女， かのじょ

1. she, her 2. girlfriend

她；女朋友

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誰か， だれか

1. someone, somebody

某人；某个人

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話し相手， 話相手， はなしあいて

1. person with whom to speak, someone to talk to, companion, advisor, adviser

tbd

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必要， 必用， ひつよう

1. necessary, needed, essential, indispensable 2. necessity, need, requirement

必要的，必需的，必不可少的，不可缺少的；必要性，需要，要求

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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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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

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だ

1. be, is

断定助动词，是，是也

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