用if+had+past participle,would+past participle 写六个句子

1.If I had known it,I would not have blamed you.
2.If I had had money,I would have bought a big house.
3.If I had heard of it,I would not have worried about it.
4.If I had helped him,he would have been better.
5.If I had been with you at the time,you would not have felt lonely.
6.If I had gone to America,you would not have met me.

sorry!I don't know !