3 表示拒绝和否定的句型有（Negativereply）
1）I’d like／love to，but I…
2）I’m so sorry，but I…
3）No，Idon’t think it is possible.
4）Sorry，can’t be done／helped.(https://www.daowen.com)
5）I’m afraid Ican’t…
6）I’d rather not if you don’t mind.
7）Idon’t quite know what to say，but the point is，Ican’t spare it.
8）If…I would do that.