1. be supposed to do . 应该 如: We are supposed to stop smoking. 我们应该停止吸烟。知识拓展 表示应该的词有:should, ought to ,be supposed to2. shake hands 握手shake 本意是“摇动、震动” 3. You should have asked what you were supposed to wear. 你本应该问清楚怎么样穿才得体。中的“should have asked”是 “情态动词+现在完成时”表示过去本应该做某事,事实上没有做 如:She should have gone to Beijing. 她本应该去了北京。(没有...