1、语法解读虚拟语气是一种动词形式，所表示的不是客观存在的事实，而是说话人的一种愿望、假设、怀疑、猜测或建议等。本单元主要讲述与现在事实相反的情况。1.虚拟语气用在含有if条件状语从句的主从复合句中。 条件从句主句意义例句If sb. did/werewould +动词原形与现在事实相反If I were you, I would not let him do that.如果我是你，我不会让他干那个事。If sb. did /were /shouldwould +动词原形与将来事实相反If it were fine tomorrow, I would go shopping.如果明天天气好，我要去
2、买东西。without替代条件从句would +动词原形与现在事实相反Without rainwater, the crops would die.没有雨水，庄稼会死的。2. 虚拟语气用在wish,suggest,order，demand，require，Its time和It looks后的从句中。主句从句意义例句wishdid表示但愿，与现在有关I wish that I knew the answer to the question.我希望我知道这个答案。 (事实上是不知道)would ratherdid表示宁愿，与现在有关I would rather you wrote in pen
3、rather than in ball pen.我宁愿你用钢笔写，而不要用圆珠笔。suggest，order，require，demand(should )do表示建议、命令、要求He suggested that our class （should） be divided into five groups. 他建议说我们的班应该分成五个小组。Its timedid表示早已到了干的时候了Its time you handed in your paper.该交试卷了。It looks as if/ as thoughdid表示愿望或假设，与现在有关It looks as though he knew the girl. 他看起来好像他认识了女孩。
