What happened the following weekend was as unforeseeable as a plane falling on your house.下个周末发生的事就像飞机掉到你家那样无法预料。This is such an unforeseeable situation that anything could happen.这是无法预见到的一种局面，任何事都可能发生。The circumstances which combined to cause this accident were unforeseeable.导致这起事故的几种情况交织在一起，不可能预料得到。