英语中有些动词后面的宾语从句或某些主语从句的谓语动词，常用虚拟语气----“（should） 动词原形”。这些动词要是逐个记忆比较困难，下面介绍几个妙法： 一.1234法。即1坚持，2命令，3建议,4要求。 1坚持（insist） The doctor insisted that I (should) give up smoking. 医生坚持要我戒烟。 2命令（order,command) The general ordered that the enemy soldiers (should) lay down their arms. 将军命令敌兵放下武器。 He commanded that all his men (should) get to the front before darkness. 他命令部下天黑前赶往前线。 3建议（suggest,propose,advise) The headmaster suggested that we (should) make better use of our spare time. 校长建议我们更好地利用业余时间。 The teacher proposed that John (should) get down to his study. 老师建议约翰静下心来好好学习。 They advised that steps (should) be taken at once. 4要求（demand，require，request，ask) The teacher demanded that the students (should) hand in the papers before 11. 老师要求学生十一点前交卷。 Father required that his son (should) not make such noisein the room. 父亲要求孩子不要在屋里大嚷。 The workers requested that the working conditions (should) be further improved. 工人们要求进一步改善工作条件。 He asks that he (should) be given an opportunity to try his method. 他要求给他一个机会试验这个方法。 二."discrop(无收获）法”。即由这个词的每一个字母联想一个词或两个词： demand,insist,suggest,command,request,require,order,propose. 三.用句联想法。由句子“I drop cars"的每一个字母联想一个或两个词。即以上是个动词。 【特别说明】 当suggest意思为”暗示“ "表明”和insist意思为“坚持说”时不用虚拟语气。