在这里是haven't 还是hadn't?——Have you heard from Mr Black recently?—— No, we ____ each other since he went to abroad.A. didn't write B.haven't written C.wouldn't write D.hadn't written答案是B 我选到D去了 这个知识点我一

haven't hadn't 在这里是haven't 还是hadn't?——Have you heard from Mr Black recently?—— No, we ____ each other since he went to abroad.A. didn't write B.haven't written C.wouldn't write D.hadn't written答案是B 我选到D去了 这个知识点我一 we -----seen each other since i finished middle school,用haven't还是hadn‘t I haven't thought it through properly.through在这里是介词还是副词,此句如何翻译? don't doesn't didn't won't hasn't haven't hadn't 的用法 I had a such meal since you invited me last time 老师这个填haven't 还是hadn't We had better leave ,hadn't we 这句话有错误吗?还是haven't me 还有werent we I‘m excited to see Mandy tomorrow ,I----- her for years 填hadn't 还是haven't 一般过去时的否定是didn't do,现在完成时的否定是haven't done 或hasn't done 或hadn't done didn't和haven't什么有区别还有hadn't 英语反义疑问句疑惑 Sarah had her washing machine repaired the day before yesterday,______she?A hadn'tB haven'tC didn't 这道题为什么不选A 不是这里是 had sth done吗? 改错My friend didn't see me for many years when i met him last week.能改成hadn't seen 么从句不是过去式么 前面不应该用hadn't么答案是改成haven't seen 现在完成时haven't clean还是haven't cleaned? if we haven't 和if we hadn't在用法上有什么不同?If we hadn't got everything ready by now,we should be having a terrible time tomorrow.句中的 hadn't换成haven't可以吗? 现在完成时还是过去完成时?I happened to meet him in the street yesterday.We ____ each other for a long time.(haven't seen or hadn't seen) i haven't been happy if i hadn't met you befor 句子通顺吗 i ___ any books for three months.a haven't buy b hadn't buy He had done的反义疑问句是hadn't he?还是didn't he?