this may have been close to the truth这是什么时态啊

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• You will have been waiting for more than two hours 这是什么时态
• this may have been close to the truth这是什么时态啊
• have gone和have been going 有什么区别啊?have gone和have been going 有什么区别啊~一个是现代完成时一个是现代完成进行时这两个词、两个时态有什么区别吗?
• still uneasy about this digital-wallet business,keep in mind that if you lose your smart phone,it can be located on a map and remotely disabled.plus,your phone can be password protected.your wallet isn't.怎么翻译啊?Still 是大写的。这是湖北2011年的高考题 D.E篇好难啊 Although some credit card providers have been experimenting with wave and pay systems that use NFC enabled credit cards,cellphone service providers may try to muscle their way into the point -of- sale (POS)market
• 谁能告诉我下appear to be与 appear to do的区别吗?谢谢If they speak for themselves,they may appear to be flattering their boss for favors.为什么这里不是用 appear to do 呢?顺便帮我分析下动词时态 这是真实条件句 还是虚拟条件句？据我观察 这应该是真实条件句 动作发生在现在 时态就是一般现在时 主句和从句时态一致的？搞不懂啊 ···
• 6 help!help!关于英语时态选择题,在此跪求大家了,谢谢谢谢谢谢谢!6.The little boy is dirty from head to foot because he ( ) in the mud all morning.A.has played B.is playing C.has been playing D.was playing答案:CQ:为什么不用过去进行时态表示小男孩整个早上都在玩,那么对于这到题现在完成进行时态has been playing和过去进行时态was playing 有什么区别,用现在完成时态has played 行不喃.又和前两个时态比较喃?现在完成时have done分为两种 1.动作未完成 2.动作已完成 所以理论说 has played 可以表示现在还在玩啊~
• I have being nice 谓语部分是have being么?这是什么时态啊
• 是不是某些情况下用完成时态和过去时态都可以?背景是,我前几天让Mary送一些文件过去给对方,但是对方发信说没有收到,并且请尽快送来.于是我确认了一下,发现M确实已经送去,所以回信告诉对方.可以用I confirmed with Mary,and the paper was sent to you.表达么?还是应该用I have confirmed with Mary,and the paper has been sent to you.到底用完成时态还是用过去时态?都可以么?什么情况下可以没有区别?完成时态是对现在有影响的过去动作，关键怎么区别对待对现在有没有影响啊？这个句子有人给我讲说是可以用过去式的，也可以用过去完成表示强调对现在有影响。
• （不难）scholars have been searching for the secrets of success这是什么时态?
• The May Day Holiday____over,we must now get down to work.A)be B)being C)to have been D)to be但是为什么啊
• I want to cry but i have cried enough. 什么意思?
• The truth is (that I have been there)为什么是表语从句为什么是表语从句,The truth 是主语,括号里的不可一世宾语吗怎么确定从句在句子中作表语?