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Hello,
I have a question about the use of word should. My teacher once used in the sentence should and I am sure that the correct word should be if.
My question is therefore if the word should can be substituted by the word if.
Many thanks,
__________
sítě

In fairly formal usage, an inverted should-construction can replace an if-construction with the same meaning, e.g.

Should you have any problems, please contact me. = If you have any problems, please contact me.

Thus what appears to be simply the replacement of a single word is in fact the replacement of one construction by another!