hah, such a cute question :D
* The quoted part is collected from internet• Conditional Sentence Type 1
→ It is possible and also very likely that the condition will be fulfilled.
Example: If I find her address, I’ll send her an invitation.
• Conditional Sentence Type 2
→ It is possible but very unlikely, that the condition will be fulfilled.
Example: If I found her address, I would send her an invitation.
BTW, try google for these kind of knowledge, it's much time-saving
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