You had better go to see a doctor right now为什么是had不是have?

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• He said,“time is running short.You had bettHe said,“time is running short.You had better leave now”中为什么要用had而不用have呢,那跟引号没关系吗，它引号内的内容是在那个特定地点说的，
• had you listened to the doctor you ---- all right now 为什么选would be而不是 would have been额 我想知道 为什么有那个now ,就能知道用would be 你而不是别的?would be和现在也不挨边啊,
• 9.Had you listened to the doctor,you _____ all right now.（标准）高中英语虚拟语气 单选题.A.are B.were C.would be D.would have been这道题是曾经有人在百度百科中问到过的题目,were、would be 和would have been都有人选择,我看了之后觉得有些疑惑,因为我觉得最佳答案应该是选择D,但是有些网站或者百度文库中的答案是B,我怀疑是网络中的以讹传讹起了误导.所以请您根据您的判断在回答栏中提出您的看法.
• 选择中if you had listened to the doctor ,you -------all right now.答案是would be为什么不是would have been ,与过去的事实相反,从句中不应该用had +done形式吗?这又怎么解释与过去事实相反 主句 Should\would\could\might+have done（动词过去分词） 从句 Had+done(过去分词)用虚拟语气的知识解答.
• 1.When they got back home from the cinema last night,they found that the house____ into.A.was broken B.had been broken.break是点动词吗?不是的话怎么能持续呢2.---You seem sleepy,Tim.---Oh,I ___ all night preparing for the report and I can hardly keep my eyes open now.A.stayed up B.have been staying up这道题怎么又变成现在完成时了?3.He suffered from serious test anxiety.____,he could neither sleep nor eat well before the important exam.A.In that case B.As a result为什么不能用A?就是这样
• ---would you like to go with us,please?---yes,i_____A.will B.would C.do D.can 为什么是A不是B?2.He___you more help,even though he was very busy.A.may have given B.might have given 为什么是A?3.The money was soon spent,so he ___go hungry.A.must B.had to C.might D.should 为什么是B不是D?4.____I take this book out of the library?No,you had better notA.Can B.Need C.Must D.May 为什么是D不是A?5.He _____Beijing,for i saw him just now.A.can not have gone to B.can not have been to 为什么
• where ______the recorder?i can not see it anywherei_______it right here.but now it is goneA)did you put,have putB)have you put,putC)had you put,was puttingD)were you putting,have put说明选择的原因,为什么不能选A2)a quarrel______between the two boysa)broke outB)was broken outC)is breaking outD)is broken out请说明选择的原因,为什么不能选B和D
• —On,I had a terrible toothache.—You better( ) to see a doctor and have your had teeth ( ) out.A.togo；pulled B.go to;pulling C.to go;pulling D.go to'pulled（出了答案之外还要解释为什么选择,还有其他选项为什么错误.）
• 英语选择 时态Glad to see you back safe and sound from Japan after the earthquake and nuclear leakage. How long _______in Japan? A. did you say B. have you stayed C. had you stayed D. would you stay为什么不是c 那个人是现在日本呆了一段时间,是过去的过去,然后在过去回来了,那个人现在问他,所以应该是过去完成时啊.其实答案是A。。。
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• bill must have got the book yesterday,___he?(didn"t)为什么不填hasn"t?如果has解释 有 的意思时 是不是反义部分就用hasn"t？
• You had better to see the doctor You had better see the doctor 那个对?求详解