If clause type 2 is used if the condition is
a) impossible to happen
If I was a colour, I would be blue. ==> The write is no colour so the condtion is impossible.
If I learned a lot, I would be a good student. ==> But the writes shows with this sentence, that he doesn't want to learn more, so it is impossible to be a good student.
b) very unlikely to happen
If I found $10000, I would buy a new car. ==> It is not very likely that the writer will find $10000.
An "conditional" or "if -clause" has two parts: The "If part" and the "main" part.
If part
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Main part
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If I was rich/ If someone gave me $10000000,
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I would live in Paris.
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I could buy a hotel.
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If + Personal pronun + Simple Past + rest
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Personal Pronoun + would + Infinitive + rest.
or could/should/etc.
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You can swap the if-part and the main part:
If I was a colour, I would be blue.
OR
I would be blue if I was a colour.
But: If your "If-part" is first, you must put a comma behind it.Remember: The if works like a comma in If-clauses.