一、我们在英语表达中，要注意被动和虚拟。
原来的宾语（往往是物）作主语，谓语部分为be done。
The book is torn by Lee. The window was broken yesterday.
It is said that our government will send some soldiers abroad.
The task has been finished. The door had been broken when the police got there.
The house is being built. The boy was being scolded.
The books will be dispatched to every student.
注意谓语是be的时态形式+done。
在非谓语动词应用中，如果非谓语动词与被修饰名词是被动关系，就用done（即省be的谓语）和相应的变体形式。
The work traslated by Mr Zhang is well known by Chinese.
Surprised to see us, he still gave us a warm welcome.
Having been bitten twice, the postman refused to post our letter unless we chained our dog.(之前已经被咬)
The task to be finished is assigned last night.（即将要完成）
This is one of the houses built last year.
二、有时我们会作这样的假设：如果要是没有那样做该有多好，如果明天不下雨就好了，如果我是你的话……，这是与事实相反的，我们把与过去和现在（即已经存在的事实）相反叫虚，把将来的假设、打算、建议叫拟（建议常常用should，因为老外说什么都是建议，比如妈妈建议孩子把衣服自己洗一下，广而言之，让对方做的命令、建议、规定都属于此类）。
虚拟语气要点：从句时态退一步，主句用3d1t。
should型：表示命令或建议动词 suggest建议, insist坚持要求, advise建议，propose提议, desire请求, demand要求,require要求，urge督促， request请求, order命令, command指挥，advocate鼓吹，arrange安排，agree同意，appoint制定，authorize授权，beg乞求，consent答应， decide决定，decree颁布，direct指导， exhort规劝，dictate指令，hint暗示，fear害怕,object反对，intend打算，maintain主张，ordain任命；规定，promise答应，rule/stipulate/prescibe规定，recommend推荐，vote表决 后的宾语从句中应使用虚拟 should +动词原形； should 不可用would，could，might 来替代,should可以省掉。
She suggested (that) we (should) hold a meeting tonight.
The doctor insisted that he (should) give up smoking.
I take it for granted that we (should) practice speaking English every day.
我认为我们的人每天都应该练习说英语。
此外，还有it is+adj(如important, advised, suggested, urgent, impossible, anxious, etc.)或I am+adj+从句时， 后面的从句也要用（should） do的形式。
It is necessary that he be sent there at once.
It is important that I (should) speak with Mr. Williams immediately.
让我立刻同威廉斯先生讲话，这事很重要。
I’m ashamed (that) you should have done such a thing.
我真感到羞耻，你竟干出这种事来。
说明：①划线的是必记单词，属于高考高频。
②主句所使用的动词时态不限。