2011-04-23,13:59

Conditionals form

 

Various Tenses in the Conditional

The following tables divide the uses of the conditional into three types, according to the time expressed in the if clause: (1) true in the present or future or possibly true in the future; (2) untrue or contrary to fact in the present; or (3) untrue or contrary to fact in the past. Notice the one step backward in time in the condition clause.

True in the Present
If clauseIndependent clause
True as habit or fact
If + subject + present tensesubject + present tense
If Judita works hard,she gets good grades.
True as one-time future event
If + subject + present tensesubject + future tense
If Judita hands in her paper early tomorrow,she'll probably get an A.
Possibly true in the future
If + subject + present tensesubject + modal + base form
If Judita hands in her paper early tomorrow,she may/might/could/should get an A.

Untrue in the Present
If clauseIndependent clause
If + subject + past tensesubject + would/could/might + simple form of verb
If Judita worked this hard in all her courses,she would/could/might get on the Dean's List.
If + subject + to be verbsubject + would/could/might + simple form of verb
If Judita were president of her class,she could work to reform the grading policy.

Untrue in the Past
If clauseIndependent clause
If + subject + past perfect tensesubject + modal + have + past participle
If Judita had worked this hard in all her courses,she would not have failed this semester.

Conditional Forms
Conditional Clauses

Conditional sentences indicate that something has not happened, but you are imagining the possibility. All conditionals have an if clause and a result clause or the word wish.

For real conditionals the possibility of something happening exists.

If I pass the test, I will be very happy.

Unreal conditionals are hypothetical.

If I got a new job next week, I would begin immediately. (It probably won’t happen.)

Or they are contrary to fact, meaning they didn’t happen in the past.

I would have gone to the party last night, but I was sick.
I would have gone to the party last night if I hadn’t been sick.

Conditional Clauses

1. Real conditions (true or probably true)

 Verb in if clauseVerb in result clause
Present fact or habitSimple PresentSimple present
Example: If I do my work, my boss doesn’t yell at me.
Future PredictiveSimple presentModal + simple verb (can, will, may, might, could, should)
Example: If I go to school early tomorrow, I can get a lot of this homework done.

2. Unreal conditions (untrue — it didn’t happen or can’t/won’t happen)

 Verb in if clauseVerb in result clause
Present or future (hypothetical or contrary to fact)Simple PastModal (would, might, could)+ simple verb
Examples: If he had enough money, he would begin his own business. If I weren’t so angry, I could talk to him.
Past (contrary to fact)Past PerfectModal + have + past participle
Example: If I had borrowed more money, I would not be in this bad situation.

NOTE: With unreal conditionals and untrue wishes, when you use the verb be in the if clause, the form is always were.

Example:

(incorrect) If he was the teacher, he would give all A’s.
(correct) If he were the teacher, he would give all A’s.
(correct) I wish he were here with me.

Many native speakers of English violate this rule and use was instead of were, for example, they might say If I was you, I would take that job instead of If I were you....

3. Wish and Hope

Wish

             wish     
Present    wish   simple past (use “were” for all pronouns)
Example: I wish they were here now.
Past    wish   Past perfect (e.g., had been, had gone) or modal (would, could) + have + past participle (e.g., been, gone)
Examples:
I wish he had been here with me.
I wish he could have been here with me.

Hope

For future wishes we use hope. Wish is seldom used in the future.

I hope I can get this project done on time. (There is a possibility of getting it done on time.)

If you use wish in the future, you are already sure it is not true (unreal conditional).

I wish I could get this project done by tomorrow. (But you surely can’t be done by tomorrow.)
I wish you could come to the party tomorrow. (But you have already told me you can’t.)

4. Other phrases using could and would

Some phrases sound like they are conditionals, but they are just polite phrases.

  • could you please
  • would you like
  • would you mind
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