私の弟は

as for my younger brother

→ 私
phrase Uncommon #13,819
as for my younger brother は marks 私の弟 as the topic; in natural English, it often translates simply as “my younger brother.”
JA: 私の弟はサッカーが好きです。
EN: My younger brother likes soccer.

私の弟はテレビを見ている。

My younger brother is watching TV.

私の弟は昨日からずっと病気です。

My younger brother has been sick since yesterday.

私の弟は高校生です。

My younger brother is a high school student.

私の弟はずっと病弱です。

My younger brother has always been frail.

私の弟は切手収集を大いに楽しみにしている。

My younger brother really enjoys collecting stamps.

その物音を聞いた途端に、私の弟は泣き始めた。

The moment my little brother heard that noise, he started crying.

私の弟はほとんど泳げない。

My younger brother can barely swim.

私の弟は天才です。

My younger brother is a genius.

私の弟は記憶力がよい。

My younger brother has a good memory.

私の弟は、二郎さんほど背が高くありません。

My younger brother isn't as tall as Jiro.

私の弟は事故でけがをしました。

My younger brother was injured in an accident.

私の弟は木から落ちて足を折った。

My younger brother fell out of a tree and broke his leg.

私の弟はとても速く話します。

My younger brother speaks very quickly.

私の弟は夏になると毎日泳いでいます。

My younger brother swims every day in the summer.

私の弟は私と同じぐらいよく勉強する。

My younger brother studies about as hard as I do.