since作“自从”时,后面能跟过去完成时吗?Did Mike have a good time at the party?Yes.He said that it was years ____he had enjoyed himself so much.A.after B.since C.before D.when答案好象是B,但since不是后面都跟过去时吗?或

since作“自从”时,后面能跟过去完成时吗?Did Mike have a good time at the party?Yes.He said that it was years ____he had enjoyed himself so much.A.after B.since C.before D.when答案好象是B,但since不是后面都跟过去时吗?或 since后面什么时候跟完成时态,什么时候用过去时态? it was +since后面跟过去时还是过去完成时 it is/has been+时间段+since since后面接完成时还是一般过去?求例子详解!拜谢~ since做连词时从句一般过去主句现在完成,那么主句的现在完成可以换成情态动词吗,就像I can take care of myself since(自从) I…… 现在完成进行时中since和for的区别,什么时候用since 什么时候用for since和for后面分别跟什么?在完成进行时中since和for的区别，什么时候用since 什么时候用for .since和for后面分别跟什么？ to后面能跟过去式和过去分词吗 求教,since是不是只能跟现在完成时用,不能跟现在完成进行时用?I__________(love) chocolate since I was a child.答案是have loved,我用have been loving,不行么,翻译自从我是小孩时,我就一直喜欢巧克力（现在 since her mother had died young,her father took care of his six children alone.以前学的since+过去时,主句用现在完成时,since翻译成自从.那么这个since翻译成什么呢?为什么? before后面要用过去完成时是怎么个情况?since后面一定要用过去时么? 动名词作主语时,后面怎么跟 WHEN后面跟过去进行时WHEN后面能跟过去进行时吗?如果能的话,那么后面是一句过去进行时的句子,前面叫你填空,是填WHEN还是WHILE呀?还有WHEN+过去进行时和WHILE+过去进行时表达的意思有什么不一 since一般后面跟什么时态 过去分词作状语,什么时候连词可以省略?为什么since时不能省略?Since told the news,the lady became eorried.而那些when,if,because等等又能省略,为什么?还有though能不能省略? the new suspension bridge(had been designed)by the end of last monthlast month 是表示过去的时间单词,但是为什么能跟完成事态呢,不是完成时太不能跟表示具体过去时间的词吗 she has taken care of your daughter since you are away这句话我觉得有问题.本题是个选择题,答案是选since,如上面写的,据我了解,since不是跟完成时联用吗?就本题而言,如果选since,后面该是过去式啊,为什么 英文的过去时be动词后面跟什么?- -是动词的过去式还是过去分词? since表示自从后面除了接一般过去时还可以接什么时态