These have not had any effect.effect 为什么不加s变复数呢?

these have not had any effect but these have not had any effect 及句型.为什么中间有一个had These have not had any effect.由于 not any=no,上面一句话可以改写为：These have had no effect. Have you ever had these? These have not had any effect.effect 为什么不加s变复数呢? what might have become of us had these event not unfolded even if l had known her adress ,l ()time to write to her a.can not have had b.will not have had c.must not have had d.might not have had详解 My friend Li Ming have had a problem these days对吗 have you ever had a school party?these days the students Have you written these letters?No,____ time to do my other work yet.A:I have had hardly B:I have hardly had C:I hardly have had D:Hardly I have had Have you written these letters?No,____ time to do my other work yet.A：I have had hardly B：I have hardly had C：I hardly have had D：Hardly I have had 16.Have you written these letters?No,____ time to do my other work yet.A：I have had hardly B：I have hardly had C：I hardly have had D：Hardly I have had Yesterday Imet Sandy .We _ each other since _ middle school.A.have not seen ;finishedB.have not seen ;finishingC.had not seen ;finishedD.had not seen ;finishing we________go home until twelve o clock yesterday?A.did not B.had not C.do not D.have not Now these magazines()in the library for a long timeA.have keptB.were keptC.have been kept D.had kept I do not have a job.I would find one but I __ no time.A.had B.didn't have C.had had D.have 几道初中时态题1.She_____(not play) football these days.{正确答案：has not played}2.I___my homework now. A.finish B finished. C.have finished D.had finished（选C）1.these days不是现在进行时的时间状语吗? 为什么要用过 These papers___yet.A.have not written B.have not been writtenC.has not written D.has not been written选哪个?为什么?怎么还papers了呢