I wouldn't be surprised if he didn't go.
彼が行っても私は驚かないだろう
I wrote to her; otherwise she would have worried about me.
彼女に手紙を出したが，出さなかったら彼女は私のことを心配しただろう
I'd give anything [my right arm, a lot]
（…があれば/…できれば）どんなにいいだろう≪for/to do≫
I'll give you three guesses.
容易にわかるだろう
I'm not sure what to buy for her birthday.
彼女の誕生日に何を買えばいいのだろう
ideal
[名]C1 〔通例a [the] ～〕模範［規範］とするべき人［もの］；（…の）理想の姿，典型≪of≫1a 〔しばしば～s〕理想，究極の目的political [democratic] idea...
if
[接]1 【条件】もし…ならば，…の場合にはif possible [necessary, so]可能［必要，そう］ならif I remember correctly ...私の記憶が確かなら…...
if it were not for A
Ａがないならば（◆現在の事実に反する仮定；((形式))では were it not for A ともいう）If it were not for air, all living things wo...
If it were not for air, all living things would die.
空気がなければすべての生物は死んでしまうだろう
If nothing goes amiss, we should finish it in a week.
順調にゆけば１週間でかたがつくだろう
