是several thousand还是several thousands of ?RT这两种我都见过。。

是several thousand还是several thousands of ?RT这两种我都见过。。 several 的用法several与hundred,thousand,million在一起怎样使用啊,hundred,thousand,million 是用单数还是复数?如果hundred,thousand,million后有名词呢? ____foreigners come to visit this museum every year填several thousand of还是several thousand为什么 还有如果是five thousands 呢要不要加of several ______(thousand) dollars thousand要加s吗?several不是加可数名词的复数吗? several thousands of 还是 several thousand这种题怎么做应该是several thousands of 啊因为他不表示具体的数字所以因该是several thousands of thousand前加several或者many时其后要加s吗? there are several( )of students in that big school.(千）填thousands ,还是thousand谢谢 英语翻译是an thousand miles 还是 a thousand miles 是 ten thousand of people 还是ten thousand people? several thousand还是several thousands ofI know a man who has a coin collection worth several ____ dollar.A.thousandB.thousands of 1900s怎么读?是“the one thousand nine hundreds”还是“nineteen hundreds”? 又一道英语数词练习题例题he has ()books in his studyA several thousands B some thousands of C some thousands Dsome thousand of在本章开头作者说thousand前加数词或several many不用加s而且也不接of的（后面是代词宾格 具体是several millions of students还是several million students 是 other several months还是over several months “几天”的英语是several days,还是for several days? 是several millions of the students还是several million of the students还是several million of ... 要表示3000是three thousand还是three thousands?拜托各位大神意思就是要不要加s 这thousand和thousands有什么区别? 能举些例子么 several millions of 还是several million具体是several millions of students还是several million of students