there must have been a million dollars there.为什么有两个there?

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• there must have been a million dollars there.为什么有两个there?
• 新概念英语中的几个问题~第三册中有这个题目：The experts were now fully convinced that the animal ____ a puma A.must be B.should have seen C.can only be D.could only have been.我选择是是A 但答案是D为什么啊还有个.The woman saw"a large cat "___five yards away from her.A.at least B.four or .C,no more than D.within为什么不选择D啊,C为什么有可以.I——it all night.but I'm afraid ...A.shall mend B.am mending C.have mended D.mended 为什么不选择AWe will get used to ___ that .BILLA,hearing B.hear C.the sound D.having hea
• there must have been a million dollars there.为什么有两个there?
• Due to the heavy rain and flooding,ten million people have been force-----their homes.A.leaving B.to leave C.to be left D.being left 为什么不选A? 为什么选B?一般什么时候 用 TO DO 什么时候用DOING 啊 ？这个有什么特定规律么，还是只看动词前的词组？
• 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~
• Sam was sure that the wallet must have been found by one of the villagers...请问been和found冲突吗?怎么有两个谓语动词?
• 反意疑问句有什么规律吗?It must have been rainy,yesterday反意用wasn't it?而It must have been rainy反意为什么就用hasn't it?
• 关于现在分词的完成式现在分词的被动形式:being+动词过去分词 现在分词的完成形式:having+动词过去分词 现在分词完成式的被动式:having been+动词过去分词这样我就想问几个问题.首先现在分词的完成形式与Have/has+动词过去分词有什么区别?能不能给个例句对比下(最好有中文翻译)还有Having been shown around the school, we had a rest.这句话我想用的应该是现在分词完成式的被动式.是以前发生的.既然是以前发生的为什么要用现在分词的完成式?也就是为什么要用having.其实我关键就是不明白.现在分词的完成式到底是怎么回事.因为我是这么想的.现在分词一般都是现在正在进行的.而完成是过去..这两个放一起.很晕!~希望有人能给我解释下哈,谢谢大家~kj918能把英文例句加上汉语翻译吗...好多都看不太明白的.....
• 有3道英语选择题.1.If you plant watermelon seeds in the spring ,you( )fresh watermelon in the fall.A.eat B.would eat C.have eaten D.will be eating为什么不能选B啊?是不是后面不能用would那种的?2.For many years,people( )electric cars .However,making them has been more difficult than predicted.A.had dreamed of B.have dreamed ofC.dreamed of D.dream of这题为什么不选C啊?为什么一定要在前面加一个have?3.The traffic rule says young children under the age of four and ( )less than 40pounds must be in a child s
• He has has been in Green China for 2 years.句中为什么有两个“has”?这是试卷上的一道题我知道has had的意思，是have/has+动词过去分词（也就是had）那么has has呢？是什么成分？还是说has been in是一个结构？
• 把一个圆锥的侧面得到一个扇形,已知扇形的半径是6厘米,圆心角是120度,求这个圆锥的表面积是多少?
• 已知抛物线y²=8x的焦点与双曲线x²/m-y²/3=1的右焦点重合,则双曲线离心率为