为什么用"millions of"不用"millions"?Millions of foreign friends come to visit China every year.

为什么用millions of不用millions?Millions of foreign friends come to visit China every year. millions of tons of watermillions of tons of waste water is being poured ……这里为什么用is?Millions of tons不用are吗?那为什么piees of paper后就用复数？ There are many places of interest which attract millions of tourists from all over the world为什么用which而不用 where Scientists think there has been life on Earth for millions of years.拜托各位了 3Q这句话为什么用has而不用have呢? television have made it possible for advertisers to capture of millions of people..句话中possible前面为什么不用is , First of all,they may have come to this planet of ours thousands or millions of years ago为什么用现在完成式have come to,后面不是有years ago.不用过去完成式had come to several thousands of millions of year后面year为什么用单 television have made it possible for advertisers to capture of millions of people..这句话中possible前面为什么不用is , many millions of可以这么用吗? 成百上千用英文翻译出来 millions of handreds of millions of hunderds of millions of Millions of other stars look smaller than the sun because they are (much farther) away.为什么在括号中用much farther 而不用 much far. millions of times为什么time要加s millions of cattle 为什么million加s cattle 不加 hold millions pages of writing writing为什么不加s 一道有疑问的英语题1.Trees have grown and died for_______.A.millions of yearsB.millions years C.millions of year B.为什么 millions and millions of的中文意思