作业帮it have been necessary 和 it is necessary 的区别?
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/04/25 16:53:17
it have been necessary 和 it is necessary 的区别?
那你帮我看下这句话好吗？这句话有点长，这里的necessary,是不是虚拟语气，如果是虚拟语气，为何前面没有你所说的would?只是it had been necessary.而不是it would have been necessary?
But rich planterswere few in the young county of Clayton,and,inorder to muster a full-strength troop,it had been necessary to raise more recruitsamong the sons of small farmers,hunters in the backwoods,swamp trappers,Crackersand,in a very few cases,even poor whites,if they were above the average oftheir class.
那你帮我看下这句话好吗？这句话有点长，这里的necessary,是不是虚拟语气，如果是虚拟语气，为何前面没有你所说的would?只是it had been necessary.而不是it would have been necessary?
But rich planterswere few in the young county of Clayton,and,inorder to muster a full-strength troop,it had been necessary to raise more recruitsamong the sons of small farmers,hunters in the backwoods,swamp trappers,Crackersand,in a very few cases,even poor whites,if they were above the average oftheir class.
it have been necessary 和 it is necessary 的区别
是没有什么区别的.
若有的话也是 时态上的区别
文中用it had been necessary 是过去完成时,因为 这里 if they were 是过去时.所以前面用had been 表在这个 were 之前.
是没有什么区别的.
若有的话也是 时态上的区别
文中用it had been necessary 是过去完成时,因为 这里 if they were 是过去时.所以前面用had been 表在这个 were 之前.
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