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To find any kanji, first try to identify the components it is made up of. Once you have identified any component, search for it in any of three ways:
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Example: look up 漢
  • Notice that 漢 is made of several components: 氵 艹 口 夫
  • Draw any of these components (one at a time) in the drawing area, and select it when you see it
  • Alternatively, look for a component in the list. 氵 艹 口 each have three strokes; 夫 has four strokes
  • If you know the meanings of the components, type any of them in the text area: water (氵), grass (艹), mouth (口) or husband (夫)
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Grammar detail: ことはない

3
3
JLPT:
ことはない - there is no need to, never happens
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plain present clause
+
ことはない
means
there is no need to ~, ~ never happens
DETAILS
じぶん
自分
を
せ
責
めることはない。
You don't have to kick yourself.
This construction is similar to ことがない, and in many cases they are interchangeable. ことがない is often used with a past form verb (to mean 'has not happened'), and it is less common to use は in this way.
If the clause containing こと~ない is itself the subject of a larger sentence, it would be preferable to use は:
DETAILS
きょうと
京都
に
い
行
ったことはないが、
なら
奈良
には
なんど
何度
か
い
行
った。
I've never been to Kyoto, but I've been to Nara several times.
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Kanji used in this grammar

自
ジ   シ   みずから self   
2
分
ブン   ブ   フン   わける to divide, to distinguish   わかる to understand   わかれる to be divided   わかつ to share, distribute   
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1
責
セキ   せめる to torture; to blame, accuse   
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3
京
キョウ   ケイ    capital   
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2
都
ト   ツ   みやこ capital city, metropolis   
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3
行
コウ   ギョウ   アン   ゆく    いく to go   おこなう to take place   
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1
奈
ナ    Nara   
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5
良
リョウ   よい good   
3
何
カ   なに    なん what?   
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1
度
ド   ト   タク   degree   たび occasion, time   
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2
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