英語の条件文（Zero, First, Second, Third Conditional）の穴埋め問題を練習します。条件文の種類を特定し、正しい動詞の形を選びましょう。試験対策の英語学習者に適しています。
If it ___ (rain), we will stay home.
rains — First Conditional: if + present simple, will + base
If you heat ice, it ___ (melt).
melts — Zero Conditional: 一般的な事実、現在形 + 現在形
If I ___ (have) more time, I would travel.
had — Second Conditional: 仮定の状況、if + 過去形, would + 動詞の原形
If she had studied, she ___ (pass) the exam.
would have passed — Third Conditional: 実現しなかった過去の状況
If you press this button, the machine ___ (start).
starts — Zero Conditional: 確実な/一般的な結果
We will go to the beach if the weather ___ (be) nice.
is — First Conditional: if の後に現在形
If I were you, I ___ (apologize).
would apologize — Second Conditional: 仮定の状況では、すべての主語で 'were' を使用
If they ___ (not / hurry), they will miss the bus.
do not hurry — First Conditional の否定形
If he ___ (know) the answer, he would tell us.
knew — Second Conditional
If you mix blue and yellow, you ___ (get) green.
get — Zero Conditional: 科学的事実
If it ___ (be) sunny tomorrow, we will have a picnic.
is — First Conditional
If I had seen you, I ___ (say) hello.
would have said — Third Conditional
She would buy a car if she ___ (have) the money.
had — Second Conditional
If water reaches 100°C, it ___ (boil).
boils — Zero Conditional
If you ___ (study) hard, you will succeed.
study — First Conditional
If I ___ (be) taller, I would play basketball.
were — Second Conditional (すべての主語で were)
If they had left earlier, they ___ (catch) the train.
would have caught — Third Conditional
If you don't water plants, they ___ (die).
die — Zero Conditional: 一般的な事実
I will help you if you ___ (ask) me.
ask — First Conditional
If he ___ (win) the lottery, he would travel the world.
won — Second Conditional
If we ___ (miss) the flight, we would have stayed overnight.
had missed — Third Conditional
If you touch fire, you ___ (get) burned.
get — Zero Conditional
If it snows tomorrow, school ___ (be) closed.
will be — First Conditional: 結果は will を使う
If I ___ (speak) French, I would move to Paris.
spoke — Second Conditional
If she ___ (call) me, I would have answered.
had called — Third Conditional
If you leave milk in the sun, it ___ (go) bad.
goes — Zero Conditional
They will be happy if their team ___ (win).
wins — First Conditional
If I ___ (not / be) so tired, I would join you.
were not — Second Conditional の否定形
If he had driven carefully, the accident ___ (not / happen).
would not have happened — Third Conditional の否定形
If you ___ (need) help, just call me.
need — First Conditional
What would you do if you ___ (see) a ghost?
saw — Second Conditional (疑問文)
If the alarm ___ (ring), everyone leaves the building.
rings — Zero Conditional: 一般的な手順
If we ___ (book) early, we will get cheaper tickets.
book — First Conditional
If I had known you were coming, I ___ (bake) a cake.
would have baked — Third Conditional
She would travel more if she ___ (not / work) so much.
did not work — Second Conditional の否定形
If you ___ (heat) butter, it melts.
heat — Zero Conditional
If the shop ___ (be) open, I will buy some bread.
is — First Conditional
If they ___ (invite) me, I would have gone to the party.
had invited — Third Conditional