在本结构中it是形式主语,真正的主语是后面的that从句,从句中谓语动词的形式为should do,should可以省略。
1.It is+过去分词+that...(should) do...
常见的此类过去分词有:suggested,ordered,desired,proposed,recommended,requested,required,demanded。
2.It is important/necessary/natural/strange/a pity/no wonder,etc.+that sb.(should)do...
It is required that the students wear school uniforms at school.
学校要求学生在学校必须穿校服。
It is proposed that this matter be considered at the next meeting.
据提议应该在下次会议考虑这件事情。
三、表语从句的虚拟语气
基本结构:(表示提议、建议、命令、要求等的)名词+be+that+主语+(should)+动词原形。
常见的此类名词有:advice,demand,order,proposal,request,suggestion,requirement,recommendation等。
My suggestion is that we should try our best to help the refugees in the earthquakes.
我的建议是我们应尽力帮助地震受难者。
The doctor's advice was that you give up smoking.
医生建议你应该戒烟。
四、同位语从句的虚拟语气
基本结构:(表示提议、建议、命令、要求的)名词+that+主语+(should)+动词原形。
常见的此类名词有:advice,demand,order,proposal,request,suggestion,requirement,recommendation等。
What do you think of my suggestion that we send a few workers to help other groups?
你认为我的那个我们应该派几个工人去帮助其他小组的建议如何?
地点、条件、让步状语从句
从句 引导词 位置 说明 地点状
语从句 where,wherever 句首、句中、句尾 where表特指;wherever表示泛指 条件状
语从句 if,as/so long as,unless,in case等 句首、句尾或主、谓之间 as/so long as"只要";in case"万一" 让步状
语从句 while,as,although,though,even if/though,whether,no matter+疑问代词等 句首、句中、句尾 (al)though引导从句时,不能和but连用