是2 million 还是2 millions?billion呢?

是2 million 还是2 millions?billion呢? 2道英语初三题目 要理由的1Eating vegetables and fruit ___ your health 是 is good for 为什么不are 呢不是复数吗2 Mom, how many stars are there in the sky ? _____ ,my dear 为什么是B 说下意思A A million stars B Milli 为什么milli-这个词根是千,或千分之一的意思,而million却是百万的意思?好像跟那个词根都不符合啊 more than half后面是a million 还是 of million 是millions of people 还是million people two hundred seventy million 请问是2700万还是2亿啊 我怎么琢磨就是2亿啊? 是several millions of the students还是several million of the students还是several million of ... 初一英语填空题（一道）13 ________(million) people .I think.是填million还是millions? million和millions的区别是应该用million yuan呢还是millions yuan? 是 6 million people 还是 6 million population顺便说下 people 和 population 区别 怎么回答What's the population of...It's...后面要不要加people?比如It's 2 million.还是It's 2 million people? one-million dollar还是one-million dollars 2500万年 英语怎么说,是million还是billion? 具体是several millions of students还是several million students 谁知道这个单位：milli-g啥意思?好像是加速度的,他跟m2次方s（m/s²）是什么关系?算了，我还是自己回答吧，milli-g是加速度的单位，它等价于cm/s²，仅此而已。 several millions of 还是several million具体是several millions of students还是several million of students again的一个用法问题And is again home for over a million people . -------again不是副词吗?什么用来形容 home 作形容词啊!那如果是用作插入语这个词两边不是应该加逗号吗：And is ,again, home for over a milli 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?