Things went from bad to worse.
事態はますます悪化した
Things were starting to change [look up, improve].
状況が変わり［上向き，好転し］始めていた
think (the) better of a person
人を以前より高く評価する［見直す］
Think (long and) hard.
じっくり考えろ
think a matter through
問題を考え抜く
think along similar lines
似た線に沿って考える
think aloud
考えていることを（思わず）口に出す
think badly [less] of a person
人を（以前より）だめだと思う
think better of it
思い直す
think big
大きく考える
