1. If I should win the lottery, I will buy everything.

Question

1-2. Should I win the lottery, I will buy everything.

2. If I were rich, I could buy Glalaxy 4.

2-2. Were I rich, I could buy Galaxy 4.

3. If I had studied harder, I would have got better grades.

3-2. Had I studied harder, I would have got/gotten better grades.

(-Inversion-Is each pair the same? Are the sentences all grammatical? In #3-2, do we have to use 'got' or 'gotten'?)

Answer 1

1. There is no such thing that a person "should" win a lottery. The meaning does not make sense.

2. Correct.

2-2. Number 2 is correct.

3/3-2. Both these sentences are correct, but use "gotten."

Answer 2

1. is correct. It may not sound right to some people because it's in the subjunctive.

The rest of Anonymous's comments are right.