请问在she has not yet replied to me.句中为什么reply要用过去式.

请问在she has not yet replied to me.句中为什么reply要用过去式. He has not yet replied to my question. 英语语法i replied giving price 为什么用了reply doing?怎么回事 不是reply to "reply"的过去式和分词是 replyed 还是replied? 句中既有动词三单又有过去式 像Ming said to me ,“she has left her book in yo But none of them has been turned to stone yet这句话中为什么用has? I do not know what to reply .请问为什么what 后面要加一个to ,是词组,还是什么语法, jenny promised to come early but she has not（ turned up ）yet jenny promised to come early but she has not——yet 英语翻译hithe jacket has not arrived to me yet,it is firm in cus she asked me to not do that big of a renovation just yet.怎么翻 he `s not yet had time to make a judgement.为什么这里用had 而不用has呢