It is been years的句子结构

It is been years的句子结构 It is years since his death.翻译下上面这个句子和It has been years since his death.意思一样吗? it is reported that in recent years severals new holiadays have been develop如何分析句子结构 it is reported that in recent years severals new holiadays have been develop需要分析句子结构 分析一下它的含义?It is has been four years since he lived here． it is 3 years since Tom has been abroad it is reported that in recent years severals new holiadays have been developed这句如何分析it is reported that in recent years severals new holiadays have been developed这句如何分析句子结构 It is ...+ since ...与It has ...+since ...的区别?It has been 2 years since we began to learn English．It is thirteen years since Hong Kong returned to China.今天在一本书上看到这两个句子,语法上都是对的吗?如何区别? 下面两个句子有什么区别?It is four years since I knew Candy.It has been four years since I knew Candy这两个句子有什么区别? I have been here for three years.=It is three years ______I____here 英语翻译It is ten years ___ Miss Green returned to Canada.A.that B.when C.since D.as 请选择并进行翻译若选C,那么后面的句子不应该是这样的吗?Miss Green has been to Canada.It is ten years since Miss Green returned to Canada. 请教大神几个英语句子.All-purpose robots are not a new idea.It's been 5 or 10 years from happening for about 50 years says Eric.打引号的这句话,我怎么翻译都翻译不明白.2,it is possible that it grew out of the discovery that it is two years since I came here还是it has been two years since I came here It is 3 years since he joined the army.为什么用is不用has been 排列两个简单的英语句子1.a ,time ,take ,it ,long ,would2.it ,married ,since ,has ,got ,been ,years ,they ,five The picture has been here.It was here two years ago.用since该写句子 It was 85 years还是 it has been 85 years? it's been six years这句话什么时态 been 的作用与时态