Explanations - 3 - Basics. Advanced Conditionals And "wish".

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Select the correct sentence that uses "should" in an inverted first conditional.

If you will see Emma, tell her I said hello.

Should you see Emma, tell her I said hello.

If you saw Emma, tell her I said hello.

Should you saw Emma, tell her I said hello.

The correct answer is Should you see Emma, tell her I said hello.

We can invert the first conditional by starting with "should" + subject + base verb instead of "if."