Conditional If

Understanding Conditional Sentences is a conditional sentence. This sentence has two clauses-parent and child-sentence phrase-connected by using "IF". This sentence has the meaning of "if" or "if". In English, this type of sentence is divided into three, namely: 

A.    First Conditional

B.     Second Conditional

C.     Third Conditional

         FIRST CONDITIONAL

1.      Structure

 If + S + V1, S + will + V1 + O
    Example:

a.       If I see Barlie, I will tell him.

b.       If Julie is free tomorrow, he will invite her.

c.       If it rains tomorrow, will you stay at home?

d.       If it rains tomorrow, what will you do?

2.      Meaning 

The sentence in this construction means it might actually happen if syratnya met. Therefore, the meaning of this phrase referred to as a possibility (likelihood). Making of a sentence of this type can be structured as follows:

S + may + V1 + that + S + may + V1 + O
In the arrangement pattern, the sentences above example can be deciphered be the following:

a.       I may see Barlie that I may tell him.

b.       Julie may be free tomorrow that he may invite her.

c.        It may rain tomorrow, may you stay at home?

d.       It may rain tomorrow, what may you do?

SECOND CONDITIONAL

1. Structure

If + S + V2, S + would + V1 + O

Example:

a.       If I married Rania, I would be happy.

b.      If Jack became rich, he would marry her.

c.       If it snowed next July, what would you do?

2. Meaning

What is said in the main clause has never happened because the terms are said to be in the clause are not met. Therefore, this sentence is called as Present Unreal. Tenses to change the meaning of the sentence and the pattern is structured as follows:

S + don’t/doesn’t + V + that + S + will not + V1 + O

In the arrangement pattern, the sentences above example can be deciphered be the following: 

a.       I don't marry Rania that I am not happy.

b.      Jack doesn't become rich that he will not marry her.

c.        It doesn't snow next July, what do you do?

           THIRD CONDITIONAL

1.      Structure

If + S  + had + V3, S + would have + V3 + O

Example:

a.       If I had seen Diana, I would have told her.

b.      If it had rained yesterday, would you have stayed at home?

c.       If Shinta had been free yesterday, I would have invited her.)

2.      Meaning 

What is said in the main clause has never happened since the phrase was said in the proviso clause was never fulfilled. Because it is expressed in the form of Past Tense, this sentence is referred to as Unreal Past. Tenses for the meaning of the sentence also changed:

S + didn’t + V1 + that + S + would not + V1 + O

In the arrangement pattern, the sentences above example can be deciphered be the following: 

a.       I didn't see Diana that I would not tell her.

b.      It didn't rain yesterday did you stay at home?

c.       Shinta wasn't free yesterday that I would not invite her.

Sumber: http://www.kursusmudahbahasainggris.com/2013/10/pengertian-tipe-susunan-makna-dan.html