Conditional clauses

CONDITIONAL CLAUSES

Conditional Clause and Main Clause

If I have enough money,   I will go to Japan.

Conditional clause           main clause

I will go to Japan,             if I have enough money

Main clause                     conditional clause

First, Second, and Third Conditional

      First conditional:   If I have enough money, I will go to Japan.

      Second conditional: If I had enough money, I would go to Japan.

3_: Third conditional: If I had had enough money, I would have gone to Japan. ___

Conditional clause             Main clause

1. If + Present Tense       will + if / present tense / imperative

          If you help me with the dishes (if + pres),

I will help you with your homework. (Will + if)

       If the sum of the digits of a number is divisible by three, the number is divisible by three (Pres. tense)

       If you see Mr. Fox tonight, tell him I am ill. (Imperative).

2. If + Past Tense would + if

3. If + Past Perfect Tense would have + past participle

We do not normally use will or would in the conditional clause,

Only in the main clause.

Uses of the Conditional

          First conditional

      Nature: Open condition, what is said in the condition is possible.

      Time: This condition refers either to present or to future time. e.g. If he is late, we will have to go without him.

If my mother knows about this, we are in serious trouble.

          Second conditional

      Nature: unreal (impossible) or improbable situations.

      Time: present; the TENSE is past, but we are talking about the present, now.

e.g. If I knew her name, I would tell you. If I were you, I would tell my father.

Compare: If I become president, I will change the social security system. (Said by a presidential candidate)

If I became president, I would change the social security system. (Said by a schoolboy: improbable)

If we win this match, we are qualified for the semifinals.

If I won a million pounds, I would stop teaching. (Improbable)

          Third conditional

      Nature: unreal

      Time: Past (so we are talking about a situation that was not so in the past.)

e.g. If you had warned me, I would not have told your father about that party.(But you didn't, and I have).

Note:

1. The conditional construction does not normally use will or would in if-clauses. EXCEPTION: If will or would express willingness, as in requests, they can be used in if-clauses.

e.g. If you will come this way, the manager will see you now. I would be grateful if you would give me a little help. (= ± please, come this way; please, give me...)

2. For the second conditional, were replaces was:

If I were a rich man...

3. After if, we can either use "some (-one, -where...)" or "any (-one, -where...).

If I have some spare time next week ended....or: If I have any

spare time...

4. Instead of if not, we can use unless.

e.g. I'll be back tomorrow unless there is a plane strike. He'll accept the job unless the salary is too low.

5. There is a "mixed type" as well, for the present results of an unreal condition in the                                                                                                                   past:

If + Past Perfect - would + if.

If you had warned me [then], I would not be in prison [now].