should /ʃud/ aux. v.1.将 (用作助动词，帮助构成过去将来时，多与第一人称连用，可用would代换)：The monitor said that we should have a class meeting the next week. 班长说我们下周要开班会。2.应该(表示责任、义务，与have + 过去分词连用时表示“本应该…”，“应该已经…”)： We should respect our teachers and parents. 我们应该尊敬老师与父母。You shouldn’t be so careless. 你不该这么粗心。You should have started 5 minutes earlier. 你应该早五分钟动身。［考句］ With all this work on hand, he shouldn’t have gone to the cinema tonight. 他手头有这么多工作，今夜不该去看电影。3.用于虚拟条件句，与第一人称连用，表示假想情况，有时可用would 代换；与各种人称连用，表示“万一”: Should it rain tomorrow, the football match would be put off. (=If it should rain…) 万一明天下雨，足球赛就推迟。If I knew her address, I should/would call on her. 我要是知道她的地址，我就去拜访她。We should/would not have succeeded without your help. 没有你的帮助，我们不会成功。 4. 表示必要、适当、惊奇、遗憾等(常用在主语从句中，可省略)： It’s necessary that we (should) learn at least one foreign language. 我们有必要至少学会一门外语。It’s strange that he (should) say so. 他居然会这样说，真是奇怪。 5. 应该，必须(用于表示建议、命令、决定等的从句中，有时可省略)： Dr. Bethune insisted that the patient (should) be operated on at once. 白求恩大夫坚持应立刻给病人动手术。The commander ordered that the city (should) be given up. 司令员命令放弃那座城市。It was decided that we (should) start a clean-up at once. 决定立即开始大扫除。