现在完成时后面是接什么时态啊在这句话中As you have already seen in Section A of this application,i have a good academic record,have already后面是接的过去分词,为什么在有些后面是接的过去时呢,比如这句话I ha

现在完成时后面是接什么时态啊在这句话中As you have already seen in Section A of this application,i have a good academic record,have already后面是接的过去分词,为什么在有些后面是接的过去时呢,比如这句话I ha 完成时后面是接什么时态啊现在完成时后面是接过去式还是过去分词啊.比如：as you have already seen in the section A,I have a good academic record.中这句话have already 后面是跟的seen,也就是过去分词,可为 by the time 后面接什么时态时主句是用现在完成时?例子? Having finished his homework,he went out for a walk这个句子中Havingfinished 是后面句子中时态决定吗如果后面的时态变换 不是made 而是现在完成时前面的Having finished 会发生变化吗 什么变化 这个短语到底用什么时态呀,in the last ten years in China,150million people moved out of poverty .可是一会又在同一教材中看到后面接的是现在完成时,真把我弄糊涂了 I've got to go.为什么要用现在完成时态?在口语中,这句话的意思是“我要走了”.为什么要用现在完成时呢? I have met him often since I have lived here.这句话对吗?不是现在完成时中since+从句用一般过去时呀?在现在完成时中,since后的从句到底用什么时态?这儿还有一句：I have learned a lot from him since I have known 主句是现在完成时,从句用什么时态 情态动词没有时态,那么这句话的must是表达情态动词么?It must have rained yesterday.这句话中must是否是情态动词?如果是,那后面have rained不是现在完成时么?这算用了时态了吧?如果must不是情态动词 英语中until的用法I didn't sleep until my mother_________(reach)home.这种情况下,until后面跟什么时态啊,现在完成时,过去完成时还是什么? love后面接什么时态love后面接什么动词形式啊?我印象中是进行时…… 英语中时态有什么特征?现在完成时 过去完成时.英语中时态有什么特征?现在完成时 过去完成时. I've lived here for two years.这句话是什么时态.是一般过去时,还是现在完成时. 英语中有哪些介词,介词后面跟的动词是否都变时态?变时态是否是现在完成时,且都要加ing?有什么特殊情况?..请列举一些常见的介词。或者怎么辨别介词 英语中形容过去有件事正在进行用什么时态?是现在完成时吗? when parents have allowed their childrento make mistakes and see their money wasted,with no more money for other things,the children will learn a useful lesson这句话中是因为有when所以要用现在完成时?还可以用其他什么时态呢? It during the past five years用change a lot 什么时态 是一般过去时还是现在完成时 I wish I had never met you的问题这句话是什么时态?如果是现在完成时,在had前面加个have语法错误吗?