こんな時英語でどう言うの〜？英会話辞典 ：　

「は」

場当たり的な　：　Ad hoc.   Improvised.   On an as-needed basis.   
馬鹿正直　：　Foolishly honest.   Naive.  
歯が立たない　：　Be beyond one.   Be over one's head.   
はかどらない　：　Not getting anywhere fast with something.  
はかどる　：　Progressing well with something.   
バカにする： Make a fool of someone. Make someone look stupid. Underestimate. 
ばかにならない　：　Nothing to treat lightly.  Nothing to laugh at.  
バカの一つ覚え　：　The only thing someone knows.  
馬鹿笑い　：　Hee-haw !   Laugh like a donkey.  
バカをみる　：　Feel like a fool.  
吐き気がする　：　Puke !   I'm gonna throw up !  
履き違える　：　Have a misconception about something.  
歯切れのよい　：　Crisp.   Articulate.  
歯切れの悪い　：　Evasive.   Unclear.  
爆発する　：　explode.   Blow up.   
はぐらかす　：　Sidestep.  Evade (the point).  
箔をつける： Polish up.  Boost someone's image. Build up someone's reputation. 
はけ口　：　Outlet.   A vent (for frustration, anger, etc.)
激しい　：　Violent.  Severe.  
化けの皮をはがす　：　Unmask someone.   Reveal someone.   
恥さらし　：　A disgrace to (the family, the company).  A blot on.  
はしたない　：　Bad manners.  Improper.  Gauche.  
はしゃぐ　：　Clown around.   Frolic.  
恥をかく　：　Be put to shame by someone.  
恥を知れ！　：　Shame on you !  
恥ずかしい　：　Embarrassing.  Shy.   
はずす　：　Miss the point.   Play the fool.   
ハズレ！　：　Wrong !   You lose !   
側から見ると　：　(As it seems) to outsiders.  
はたして　：　As I thought.   I wonder.  
はた迷惑　：　Bother the others. Disturb others.  Make trouble for the others. 
バタンキュー　：　 Crash.  
バチが当たる　：　Get what one deserves.  One is gonna get it (someday).  
場違い　：　Out of place.  
はっきり言って　：　To be honest.   
ばったり会う　：　Bump into someone.   
バッチリ！　：　Perfect !  
ハッタリをかます　：　Bluff.  
パッとしない　：　Dull.   Drab.  
ハッとする　：　Be surprised.   
八方美人　：　Someone wants to please someone.   Someone is too accommodating. 
話せる　：　Understanding.  Open.  
鼻っ柱が強い　：　Hard-nosed.   Pushy.   
鼻であしらう：Someone turns up someone's nose at. Someone snubs someone else.  
鼻につく　：　Makes one sick.  Gets to one.   
鼻持ちならない　：　Something stinks.  Something is disgusting.  
鼻をほじくる　：　Pick one's nose.  
花を持たせる　：　Make someone look good.  Let someone take the credit.  
はばかりながら　：　Well excuse me, but....   
〜羽目になる　：　End up ...ing.   Wind up ...ing.  
はめられた　：　Be trapped.   
早い話が　：　In a word.   In short.   
はやっている　：　Popular.   In vogue.   
早とちり　：　Jump to a conclusion.   Make assumptions. 
早引け　：　Skip out early.  
腹いせをする　：　Get back at someone.   
腹が減った　：　I'm starved.   
腹黒い　：　Scheming.   No good.   
腹ごなし　：　Work off (dinner, lunch etc.)   Aid digestion.  
ばらす(分解する)　：　Take something apart.   
ばらす（秘密を）　：　Expose someone/something.  
ばらす（殺す）　：　Waste someone.   
腹立たしい　：　That drives me crazy !  
ハラハラさせる　：　Thrilling.   Suspenseful.   
ハラハラする　：　Be afraid of.  Feel nervous about.   
腹を立てる　：　Get pissed off.   Shit a brick.   
腹を割って話す　：　Have a heart-to-heart talk.   Spill one's guts.  
張り合う ：　Fight over.  Compete against one another for someone/something.  
パリッと　：　Stylish.   Sharp.   Very GQ.   
ばれっちゃった　：　The truth is out.   The cat's outof the bag !   
反感を買う　：　Antagonize someone.   
半信半疑である　：　Have one's doubts.   Be slightly suspicious.   
反省する　：　Think over.   Reconsider.   
反対に遭う　：　Meet with opposition.   
反応がない　：　No reaction yet.   
話が合う　：　Agree.   Click.   
話が落ちる　：　The talk goes into the gutter.  This might sounds dirty.  
話が弾む　：　Have a great conversation about something.  Talk up a storm.   
話にならない　：　Be out of question.  Be not worth discussing.   
話は違うが：　Not to change the subject, but... This is a different topic, but 
話は別　：　That's another thing.  That has nothing to do with this.   
話半分　：　Take someone's words with a grain of salt.  
話べた　：　Not good at expressing oneself.  Inarticulate.  Shy.   
話をそらす　：　Change the subject.   
　

このコーナーは「講談社文庫」の「こんな時どう言う英会話辞典」（長村キット著）
から抜粋させて頂きました。
この本には役に立つフレーズが満載です。読み物としても面白いですよ〜！