Conditional Sentences

Conditional Sentences

The sentence that begins with if known as conditional sentence.

Remember, had, were, in case, unless, provided, provided that, providing that can be used instead of If.

Try to understand If Clause and Main Clause

If Clause Main Clause
1.       If I wake up early, I go jogging.
2.       If I have enough money, I will go to Japan.
3.       If I have enough time, I’ll watch the football match.
4.       If I had wings, I would fly.
5.       If I had time, I would drop you off at school.
6.       If he had been careful, he wouldn’t have had that terrible accident.


Main Clause If Clause
1.       I go jogging If I wake up early.
2.       I will go to Japan If I have enough money.
3.       I’ll watch the football match If I have enough time.
4.       I would fly If I had wings.
5.       I would drop you off at school If I had time.
6.       He wouldn’t have had that terrible accident If he had been careful.



There are four types of Conditional sentences

Conditional Usage   If clause Main clause
1.       Zero General truths   Simple present Simple present
2.       First possible and very likely    Simple present Simple future

Imperative sentence


3.       Second possible but very unlikely   Simple past subject+would/could/might+verb1
4.       Third impossible  to fulfill   Past perfect subject+would/could/might+have+verb3


Four types of Conditional sentences in details

Zero conditional If + Simple present + Simple present
First conditional It is possible and very likely that the condition will be fulfilled.

If + Simple present , sub + shall/will/can/may + verb1 + ext.

If + Simple present, Imperative sentence

Second conditional It is possible but very unlikely, that the condition will be fulfilled.

If + Simple past , sub + would/could/might+ verb1 + ext.

Or, Were I a bird, I would fly at large.

Or, Had I enough money, I would start a business.

Third conditional It is impossible that the condition will be fulfilled.

If +past perfect, sub + would/could/might+have+verb3+ext.

Or, Had I seen her before, I would have disclosed the truth.



If I invite you, you (come). If it rains, I (not go) to school. If I want, he (give) me. If they ask, he (disclose). If I (see) him, I will call him. If you run in the rain, you (catch) cold. If you work hard, you (prosper) in life. Memory will not go out if it (rain). If you finish the work in time, you (get) a prize. If they come, I (be) happy. If you write the letter, I (post) it. If it (rain), I will not go to play. If he reads attentively, he (pass). If it rains, I (go) to the park. If I study today, I (go) to the party tonight. If I have enough money, I(buy) some new shoes. She (be) late if the train is delayed. She (miss) the bus if she doesn’t leave soon. If I see her, I (tell) her.

If her uncle (arrives), I would meet him. If I (know) her phone number, I would call her. If I got a student visa, I (get) a great chance to study abroad. If I (am) a king, I would help the poor. If you (come) here, I would give you the news. If he studied regularly and seriously, he (do) well in the examination. If I were a king, I (help) the poor.  If he requested me, I (go) there.  If they tried, they (succeed). If I were a bird, I (fly). If he came, I (go). If I had enough money, I (set) up a hospital. If you tried, you (do) it. If I had extra books, I (lend) him. If I had the wings of a Dove, I (fly) to you.

 If he had studied very seriously, he (make) a bright result. If she had not missed the interview, she (get) the job. If I had had your number, I (call) you but I had forgotten it. I (order) a taxi if you had told me. I would not have said that if I (have) there. Had I the wings of a bird, I (fly) like a bird. If I had been a rich man, I (help) the poor. Had I been a rich man, I (help) the poor. We would have come, if he (invite) us.