Step 2 ：the conditions of partial inversion

Read the following sentences: 1,Never have I been to the Great Wall. 2,Only until yesterday did I know he was in our city now. 3,Had I come here yesterday, I would have helped you.=_____________________________ 4,So excited was he that he forgot to say thanks to me. 5,Yong as he is, he has been in charge of a big company

If I had come here, I would have helped you

“noises” can help you remember them.