1. Sarah doesn't like natto, (though [although]) she
likes Japanese food.
2. (If) you're thirsty, I'll bring you bottled water.
3. I'll help her with the cleaning, (even) (if) I'm not
asked to.
4. The plan will succeed (unless) there is a long
delay.
5. You can have a dog (as) (long) as you take care
of it.
解説
1.「…だけれども」と譲歩を表す接続詞は though
[although]である。逆接の butを用いると, Sarah likes
Japanese food, but she doesn't like natto.となる。「納
豆」のように英語にはない単語はローマ字表記のイタリック
体(斜体)にする(natto)。