1 If you__(can/come)with us.We would have been pleased.
2 You ___(not make) such mistake.If you have been more craful.
3 If father ____(be) alive,he would be horrified.
4 If it ___(be) fine tomorrow.We shall go for a swim.
关于第4题,我想问一下,严格来说,这一句也属于虚拟语气的范围吗?