彼、今のところは飛ぶ鳥も落とす勢いだけれど、あの威勢いつまでもつのか、疑問だね。

He's unstoppable right now but the question is how long he can remain at the pinnacle of his career.

彼、一気呵成に書き上げたと言ってたけど、この提案書、少し雑だね。

He said he dashed this proposal off in one sitting. It's pretty sloppy.

彼、今日、精彩がないね。青菜に塩だね。

He seems really depressed and lifeless today. I wonder what took the wind out of his sails.

突然の昇進の発表で、彼、鳩が豆鉄砲を食らったような顔をしていたよ。

He looked blank when he heard the announcement of his promotion.

彼、能書きばかり立派だけど、言うは易く行うは難し、ってこと分かってんのかなあ。

His boosterism makes it sound wonderful but I wonder if he understands how hard it's going to be to actually carry out.

彼、スラッとしてて、格好いいじゃない。

Isn't he gorgeous? - So tall and smart-looking.

彼、ボスの逆鱗に触れ、地方支店に追いやられたよ。

He recently had the bad luck to incur his boss' wrath and got sent out to work in the boondocks.

彼、最近、私に冷たくなったような気がする。

I feel like he's grown cold toward me lately.