2週5日目 外国へ行くとしたら
Value・ability・condition
接続：普通形＋としたら
if suppose; based on assumptions
注意 / Note：The three models are all hypothetical; とすると often emphasizes the logical consequence following an assumption.
比較 / Compare：Same song: 〜とすれば／〜とすると. These models are often mistakenly chosen for each other — carefully read the 接続 and nuances above and then decide.
よく出る形 / Common form：普通形＋としたら、〜。The last part is either a question or 〜だろう. The subjunctive is to THINK TOGETHER, so it fits very well with 〜か.
外国で働くとしたら、どこがいいですか。
If you worked abroad, where would you like to be?
それが事実だとしたら、大問題だ。
If that's true then it's a big problem.
一つだけ持って行けるとしたら、何を選びますか。
If you could only bring one thing, what would you choose?