What if...?

What if ...? =What would happen if...?

現在形：可能性が高い　過去形：可能性が低い・婉曲(遠まわし)  過去完了：過去の出来事

①提案　仮にどうでしょう？　もし～だとしたらどうでしょう？ ＝How about...?

What if I lend you the money? 私がお金を貸すのはどうでしょう？

What if you move the chair a little bit?

What if you go abroad to study instead of enrolling into a Japanese university?

What if you could live forever?

What if we proposed he move to the western edge?

Instead of celebrating Xmas this year, what if took the kids on an overseas holiday?

I don't think I'll be able to make tomorrow's meeting on time.

What if we ask to make it 10 AM instead of 9 AM?

Yes, that would work for me.

Ok. I will call them and see if they can shift the meeting to 10 AM.

make it 　成功する、間に合う、都合がつく、乗り越える

see if...   ...かどうか確かめる

②不安　...したらどうなるだろうか？　問いかけ

What if it rains? 

What if we miss the last train?

What if I didn't pass the final exam?

What if lose my job? What shall we do then?

But what if you make it? でも成功したらどうなる？

What if we skip the class today? Would we fail this class?

What if it rains this weekend? We won't be able to go camping.

What if you had slipped? You would've fallen off the cliff and died.

What if we had missed our fright? We didn't have travel insurance. We would have been in real trouble then.