英語は私の母国語です。
tbd
English is my mother tongue.
English is my native language.
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英語は私の母国語ではない。
tbd
English is not my mother tongue.
English is not my first language.
English is not my native language.
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ライトさんは、まるで母国語の様に日本語を話します。
tbd
Mr Wright speaks Japanese as if it were his mother tongue.
Mr. Wright speaks Japanese like a native speaker.
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その外国人はまるで母国語であるかのように日本語を話す。
tbd
The foreigner speaks Japanese as if it were his native language.
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