以下是3个例句供您参考：It is supposed to be a car,but it is a truck.本来期望是辆小车的,可却是个卡车.He was supposed to be at the meeting.他本应出席那个会议的.We were supposed to be on the train,not he...谢谢你的句子，顺便帮我看看这两个也对吗？谢谢It's supposed to snow next week. 下周因该要下雨It's supposed to have a sand storm in the spring.两句都没问题，就是第2句的 sand storm 最好连起来写，是一个词，指“沙尘暴”。