parts of the.和 part of the ...有什么区别我想说 中国的部分Hotmail邮箱不好使了 怎么说以及 和 Partly 什么区别

the part of和the parts of 的区别 the northern parts of China 为什么part是复数形式 one of the parts 这个part 为什么要加s Part of 和a part of 和parts of的区别 become part of 和 become a part of这两个词组都对吧?没有become parts parts of the.和 part of the ...有什么区别我想说 中国的部分Hotmail邮箱不好使了 怎么说以及 和 Partly 什么区别 only ------the surface of the earth is land.A.part of B.a part of C.parts of D.part 选什么为什么 a part of, the part of, part of, parts of的区别是什么?These elements become 【part of】 the interstellar gas and dust.这些元素成了星际气体和星际尘埃的一部分.请问：这里用part of对不对?为什么? parts of the world in the northern part of china.为什么有的地方写parts?是哪一个 in the event that any part or parts of this agreement shall be held illegal in parts 和in part的区别 parts of the earth整个地球各地； part of the earth 地球的一部分.是这么区别的吗? water makes up the largest part of the body.water covers most parts of the earth.part什么时候用单数复数 part of,parts of 2个词的区别? 是most part of还是most parts of? a part of 和part of有什么区别吗?还有parts of,这几个短语有什么区别?能不能给我一些例句啊 a part of sth that is left after the other parts have been used, removed, destroyed这语法结构?